Move java api to extras/

Change-Id: Ibd5cbbdfb22a235442cddaebc9eae9a3c4e35ec9
Signed-off-by: Damjan Marion <damarion@cisco.com>

18 files changed, 1792 insertions, 0 deletions

diff --git a/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CallbackApiExample.java b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CallbackApiExample.java
new file mode 100644
index 00000000000..b99979cf301
--- /dev/null
+++ b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CallbackApiExample.java
@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.vpp.jvpp.core.examples;
+
+import io.fd.vpp.jvpp.JVpp;
+import io.fd.vpp.jvpp.JVppRegistry;
+import io.fd.vpp.jvpp.JVppRegistryImpl;
+import io.fd.vpp.jvpp.VppCallbackException;
+import io.fd.vpp.jvpp.core.JVppCoreImpl;
+import io.fd.vpp.jvpp.core.callback.GetNodeIndexReplyCallback;
+import io.fd.vpp.jvpp.core.callback.ShowVersionReplyCallback;
+import io.fd.vpp.jvpp.core.callback.SwInterfaceDetailsCallback;
+import io.fd.vpp.jvpp.core.dto.GetNodeIndex;
+import io.fd.vpp.jvpp.core.dto.GetNodeIndexReply;
+import io.fd.vpp.jvpp.core.dto.ShowVersion;
+import io.fd.vpp.jvpp.core.dto.ShowVersionReply;
+import io.fd.vpp.jvpp.core.dto.SwInterfaceDetails;
+import io.fd.vpp.jvpp.core.dto.SwInterfaceDump;
+import java.nio.charset.StandardCharsets;
+
+public class CallbackApiExample {
+
+    public static void main(String[] args) throws Exception {
+        testCallbackApi();
+    }
+
+    private static void testCallbackApi() throws Exception {
+        System.out.println("Testing Java callback API with JVppRegistry");
+        try (final JVppRegistry registry = new JVppRegistryImpl("CallbackApiExample");
+             final JVpp jvpp = new JVppCoreImpl()) {
+            registry.register(jvpp, new TestCallback());
+
+            System.out.println("Sending ShowVersion request...");
+            final int result = jvpp.send(new ShowVersion());
+            System.out.printf("ShowVersion send result = %d%n", result);
+
+            System.out.println("Sending GetNodeIndex request...");
+            GetNodeIndex getNodeIndexRequest = new GetNodeIndex();
+            getNodeIndexRequest.nodeName = "non-existing-node".getBytes(StandardCharsets.UTF_8);
+            jvpp.send(getNodeIndexRequest);
+
+            System.out.println("Sending SwInterfaceDump request...");
+            SwInterfaceDump swInterfaceDumpRequest = new SwInterfaceDump();
+            swInterfaceDumpRequest.nameFilterValid = 0;
+            swInterfaceDumpRequest.nameFilter = "".getBytes(StandardCharsets.UTF_8);
+            jvpp.send(swInterfaceDumpRequest);
+
+            Thread.sleep(1000);
+            System.out.println("Disconnecting...");
+        }
+        Thread.sleep(1000);
+    }
+
+    static class TestCallback implements GetNodeIndexReplyCallback, ShowVersionReplyCallback, SwInterfaceDetailsCallback {
+
+        @Override
+        public void onGetNodeIndexReply(final GetNodeIndexReply msg) {
+            System.out.printf("Received GetNodeIndexReply: %s%n", msg);
+        }
+
+        @Override
+        public void onShowVersionReply(final ShowVersionReply msg) {
+            System.out.printf("Received ShowVersionReply: context=%d, program=%s, version=%s, "
+                    + "buildDate=%s, buildDirectory=%s%n",
+                msg.context,
+                new String(msg.program, StandardCharsets.UTF_8),
+                new String(msg.version, StandardCharsets.UTF_8),
+                new String(msg.buildDate, StandardCharsets.UTF_8),
+                new String(msg.buildDirectory, StandardCharsets.UTF_8));
+        }
+
+        @Override
+        public void onSwInterfaceDetails(final SwInterfaceDetails msg) {
+            System.out.printf("Received SwInterfaceDetails: interfaceName=%s, l2AddressLength=%d, adminUpDown=%d, "
+                    + "linkUpDown=%d, linkSpeed=%d, linkMtu=%d%n",
+                new String(msg.interfaceName, StandardCharsets.UTF_8), msg.l2AddressLength, msg.adminUpDown,
+                msg.linkUpDown, msg.linkSpeed, (int) msg.linkMtu);
+        }
+
+        @Override
+        public void onError(VppCallbackException ex) {
+            System.out.printf("Received onError exception: call=%s, context=%d, retval=%d%n", ex.getMethodName(),
+                ex.getCtxId(), ex.getErrorCode());
+        }
+    }
+}
diff --git a/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CallbackApiReadPerfTest.java b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CallbackApiReadPerfTest.java
new file mode 100644
index 00000000000..6ff440dccc0
--- /dev/null
+++ b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CallbackApiReadPerfTest.java
@@ -0,0 +1,146 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.vpp.jvpp.core.examples;
+
+import io.fd.vpp.jvpp.JVpp;
+import io.fd.vpp.jvpp.JVppRegistry;
+import io.fd.vpp.jvpp.JVppRegistryImpl;
+import io.fd.vpp.jvpp.VppCallbackException;
+import io.fd.vpp.jvpp.core.JVppCoreImpl;
+import io.fd.vpp.jvpp.core.callback.ShowVersionReplyCallback;
+import io.fd.vpp.jvpp.core.dto.*;
+
+import java.util.logging.Logger;
+
+public class CallbackApiReadPerfTest {
+
+    private static final Logger LOG = Logger.getLogger(CallbackApiReadPerfTest.class.getName());
+    private static final ShowVersion REQUEST = new ShowVersion();
+
+    /**
+     *
+     * @param args - for running for one sec requires no parameter
+     *             - for running for set amount of requests requires one parameters, desired REQUEST amount
+     * @throws Exception if arguments aren't String representations of numbers
+     */
+    public static void main(String[] args) throws Exception {
+        if (args.length != 0) {
+            testInvokeCounter(true, Integer.parseUnsignedInt(args[0]));
+        } else {
+            testInvokeCounter(false, 0);
+        }
+    }
+
+    /**
+     *
+     * @param setCount true = run with set amount of requests, false = run for 1 sec
+     * @param count number of request with which test should be run
+     * @throws Exception
+     */
+    private static void testInvokeCounter(boolean setCount, int count) throws Exception {
+        LOG.info("Testing callback API Invocation Counter");
+        try (final JVppRegistry registry = new JVppRegistryImpl("CallbackApiReadPerfTest");
+             final JVpp jvpp = new JVppCoreImpl()) {
+            TestCallback callback = new TestCallback(count);
+            registry.register(jvpp, callback);
+            if (!setCount) {
+                for(int i = 0; i < 5; i++) {
+                    callback.reset();
+                    LOG.info("Starting invocation for 1sec");
+                    long time = System.nanoTime();
+                    do {
+                        jvpp.send(REQUEST);
+                    } while (System.nanoTime() - time < 1000000000 || callback.stop());
+                    int replyCount =  callback.getReplyCounter();
+                    LOG.info(String.format("Invocation count within 1 second: %d", replyCount));
+                }
+            } else {
+                for (int i = 0; i < 5; i++) {
+                    LOG.info("Starting invocations");
+                    callback.reset();
+                    long time = System.nanoTime();
+                    for (int x = 0; x < count; x++) {
+                        jvpp.send(REQUEST);
+                    }
+                    long timeAfter = callback.getTime();
+                    LOG.info(String.format("Invocations took %d ns (%f invocations/s)", timeAfter - time,
+                            count * (1000000000.0/(timeAfter - time))));
+                }
+            }
+
+
+            Thread.sleep(1000);
+            LOG.info("Disconnecting...");
+        }
+        Thread.sleep(1000);
+    }
+
+    static class TestCallback implements ShowVersionReplyCallback {
+
+        private int replyCounter = 0;
+        private int count;
+        private long time = 0;
+        private boolean stop = false;
+
+        public TestCallback(int count) throws Exception {
+            this.count = count;
+        }
+
+        public int getReplyCounter() {
+            return replyCounter;
+        }
+
+        public void reset() {
+            replyCounter = 0;
+            time = 0;
+            stop = false;
+        }
+
+        public boolean stop() {
+            this.stop = true;
+            return false;
+        }
+
+        /* actual method called from VPP
+           not thread safe but since there's only one VPP thread listening for requests and calling
+           this method it's OK
+         */
+        @Override
+        public void onShowVersionReply(final ShowVersionReply msg) {
+            if (stop) {
+                return;
+            }
+            replyCounter++;
+            if (replyCounter == count ) {
+                time = System.nanoTime();
+            }
+        }
+
+        @Override
+        public void onError(VppCallbackException ex) {
+            System.out.printf("Received onError exception: call=%s, context=%d, retval=%d%n", ex.getMethodName(),
+                ex.getCtxId(), ex.getErrorCode());
+        }
+
+        public long getTime() throws Exception {
+            while(time == 0) {
+                Thread.sleep(1000);
+            }
+            return time;
+        }
+    }
+}
diff --git a/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CallbackApiWritePerfTest.java b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CallbackApiWritePerfTest.java
new file mode 100644
index 00000000000..1940ddcf378
--- /dev/null
+++ b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CallbackApiWritePerfTest.java
@@ -0,0 +1,162 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.vpp.jvpp.core.examples;
+
+import io.fd.vpp.jvpp.JVpp;
+import io.fd.vpp.jvpp.JVppRegistry;
+import io.fd.vpp.jvpp.JVppRegistryImpl;
+import io.fd.vpp.jvpp.VppCallbackException;
+import io.fd.vpp.jvpp.core.JVppCoreImpl;
+import io.fd.vpp.jvpp.core.dto.*;
+import io.fd.vpp.jvpp.core.callback.ClassifyAddDelTableReplyCallback;
+
+import java.util.logging.Logger;
+
+public class CallbackApiWritePerfTest {
+
+    private static final Logger LOG = Logger.getLogger(CallbackApiWritePerfTest.class.getName());
+    private static final ClassifyAddDelTable REQUEST = createAddDelTable();
+
+    private static ClassifyAddDelTable createAddDelTable () {
+        ClassifyAddDelTable addDelTable = new ClassifyAddDelTable();
+        addDelTable.isAdd = 1;
+        addDelTable.tableIndex = -1;
+        addDelTable.nbuckets = 2;
+        addDelTable.memorySize = 2 << 20;
+        addDelTable.nextTableIndex = ~0; // default
+        addDelTable.missNextIndex = ~0; // default
+        addDelTable.skipNVectors = 0;
+        addDelTable.matchNVectors = 1;
+        addDelTable.mask =
+                new byte[] {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                        (byte) 0xff, (byte) 0xff, 0x00, 0x00, 0x00, 0x00};
+        return addDelTable;
+    };
+
+    /**
+     *
+     * @param args - for running for one sec requires no parameter
+     *             - for running for set amount of requests requires one parameters, desired REQUEST amount
+     * @throws Exception if arguments aren't String representations of numbers
+     */
+    public static void main(String[] args) throws Exception {
+        if (args.length != 0) {
+            testInvokeCounter(true, Integer.parseUnsignedInt(args[0]));
+        } else {
+            testInvokeCounter(false, 0);
+        }
+    }
+
+    /**
+     *
+     * @param setCount true = run with set amount of requests, false = run for 1 sec
+     * @param count number of requests with which test should be run
+     * @throws Exception
+     */
+    private static void testInvokeCounter(boolean setCount, int count) throws Exception {
+        LOG.info("Testing callback API Invocation Counter");
+        try (final JVppRegistry registry = new JVppRegistryImpl("CallbackApiWritePerfTest");
+             final JVpp jvpp = new JVppCoreImpl()) {
+            TestCallback callback = new TestCallback(count);
+            registry.register(jvpp, callback);
+            if (!setCount) {
+                for(int i = 0; i < 5; i++) {
+                    callback.reset();
+                    LOG.info("Starting invocation for 1sec");
+                    long time = System.nanoTime();
+                    do {
+                        jvpp.send(REQUEST);
+                    } while (System.nanoTime() - time < 1000000000 || callback.stop());
+                    int replyCount = callback.getReplyCounter();
+                    LOG.info(String.format("Invocation count within 1 second: %d", replyCount));
+                }
+            } else {
+                for(int i = 0; i < 5; i++) {
+                    LOG.info("Starting invocations");
+                    callback.reset();
+                    long time = System.nanoTime();
+                    for (int x = 1; x <= count; x++) {
+                        jvpp.send(REQUEST);
+                    }
+                    long timeAfter = callback.getTime();
+                    LOG.info(String.format("Invocations took %d ns (%f invocations/s)", timeAfter - time,
+                            count * (1000000000.0 / (timeAfter - time))));
+                }
+            }
+
+
+            Thread.sleep(1000);
+            LOG.info("Disconnecting...");
+        }
+        Thread.sleep(1000);
+    }
+
+    static class TestCallback implements ClassifyAddDelTableReplyCallback {
+
+        private int replyCounter = 0;
+        private int count;
+        private long time = 0;
+        private boolean stop = false;
+
+        public TestCallback(int count) throws Exception {
+            this.count = count;
+        }
+
+        public int getReplyCounter() {
+            return replyCounter;
+        }
+
+        public void reset() {
+            replyCounter = 0;
+            time = 0;
+            stop = false;
+        }
+
+        public boolean stop() {
+            this.stop = true;
+            return false;
+        }
+
+        /* actual method called from VPP
+           not thread safe but since there's only one VPP thread listening for requests and calling
+           this method it's OK
+         */
+        @Override
+        public void onClassifyAddDelTableReply(final ClassifyAddDelTableReply msg) {
+            if (stop) {
+                return;
+            }
+            replyCounter++;
+            if (replyCounter == count ) {
+                time = System.nanoTime();
+            }
+        }
+
+        @Override
+        public void onError(VppCallbackException ex) {
+            System.out.printf("Received onError exception: call=%s, context=%d, retval=%d%n", ex.getMethodName(),
+                    ex.getCtxId(), ex.getErrorCode());
+        }
+
+        public long getTime() throws Exception {
+            while(time == 0) {
+                Thread.sleep(1000);
+            }
+            return time;
+        }
+    }
+}
diff --git a/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CallbackJVppFacadeExample.java b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CallbackJVppFacadeExample.java
new file mode 100644
index 00000000000..dc2bdcba569
--- /dev/null
+++ b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CallbackJVppFacadeExample.java
@@ -0,0 +1,110 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.vpp.jvpp.core.examples;
+
+import io.fd.vpp.jvpp.JVppRegistry;
+import io.fd.vpp.jvpp.JVppRegistryImpl;
+import io.fd.vpp.jvpp.VppCallbackException;
+import io.fd.vpp.jvpp.core.JVppCoreImpl;
+import io.fd.vpp.jvpp.core.callback.GetNodeIndexReplyCallback;
+import io.fd.vpp.jvpp.core.callback.ShowVersionReplyCallback;
+import io.fd.vpp.jvpp.core.callfacade.CallbackJVppCoreFacade;
+import io.fd.vpp.jvpp.core.dto.GetNodeIndex;
+import io.fd.vpp.jvpp.core.dto.GetNodeIndexReply;
+import io.fd.vpp.jvpp.core.dto.ShowVersionReply;
+import java.nio.charset.StandardCharsets;
+
+/**
+ * CallbackJVppFacade together with CallbackJVppFacadeCallback allow for setting different callback for each request.
+ * This is more convenient than the approach shown in CallbackApiExample.
+ */
+public class CallbackJVppFacadeExample {
+
+    private static ShowVersionReplyCallback showVersionCallback1 = new ShowVersionReplyCallback() {
+        @Override
+        public void onShowVersionReply(final ShowVersionReply msg) {
+            System.out.printf("ShowVersionCallback1 received ShowVersionReply: context=%d, program=%s,"
+                    + "version=%s, buildDate=%s, buildDirectory=%s%n", msg.context,
+                new String(msg.program, StandardCharsets.UTF_8),
+                new String(msg.version, StandardCharsets.UTF_8),
+                new String(msg.buildDate, StandardCharsets.UTF_8),
+                new String(msg.buildDirectory, StandardCharsets.UTF_8));
+        }
+
+        @Override
+        public void onError(VppCallbackException ex) {
+            System.out.printf("Received onError exception in showVersionCallback1: call=%s, reply=%d, context=%d%n",
+                ex.getMethodName(), ex.getErrorCode(), ex.getCtxId());
+        }
+    };
+
+    private static ShowVersionReplyCallback showVersionCallback2 = new ShowVersionReplyCallback() {
+        @Override
+        public void onShowVersionReply(final ShowVersionReply msg) {
+            System.out.printf("ShowVersionCallback2 received ShowVersionReply: context=%d, program=%s,"
+                    + "version=%s, buildDate=%s, buildDirectory=%s%n", msg.context,
+                new String(msg.program, StandardCharsets.UTF_8),
+                new String(msg.version, StandardCharsets.UTF_8),
+                new String(msg.buildDate, StandardCharsets.UTF_8),
+                new String(msg.buildDirectory, StandardCharsets.UTF_8));
+        }
+
+        @Override
+        public void onError(VppCallbackException ex) {
+            System.out.printf("Received onError exception in showVersionCallback2: call=%s, reply=%d, context=%d%n",
+                ex.getMethodName(), ex.getErrorCode(), ex.getCtxId());
+        }
+
+    };
+
+    private static GetNodeIndexReplyCallback getNodeIndexCallback = new GetNodeIndexReplyCallback() {
+        @Override
+        public void onGetNodeIndexReply(final GetNodeIndexReply msg) {
+            System.out.printf("Received GetNodeIndexReply: %s%n", msg);
+        }
+
+        @Override
+        public void onError(VppCallbackException ex) {
+            System.out.printf("Received onError exception in getNodeIndexCallback: call=%s, reply=%d, context=%d%n",
+                ex.getMethodName(), ex.getErrorCode(), ex.getCtxId());
+        }
+    };
+
+    private static void testCallbackFacade() throws Exception {
+        System.out.println("Testing CallbackJVppFacade");
+
+        try (final JVppRegistry registry = new JVppRegistryImpl("CallbackFacadeExample");
+             final CallbackJVppCoreFacade callbackFacade = new CallbackJVppCoreFacade(registry, new JVppCoreImpl())) {
+            System.out.println("Successfully connected to VPP");
+
+            callbackFacade.showVersion(showVersionCallback1);
+            callbackFacade.showVersion(showVersionCallback2);
+
+            GetNodeIndex getNodeIndexRequest = new GetNodeIndex();
+            getNodeIndexRequest.nodeName = "dummyNode".getBytes(StandardCharsets.UTF_8);
+            callbackFacade.getNodeIndex(getNodeIndexRequest, getNodeIndexCallback);
+
+            Thread.sleep(2000);
+            System.out.println("Disconnecting...");
+        }
+        Thread.sleep(1000);
+    }
+
+    public static void main(String[] args) throws Exception {
+        testCallbackFacade();
+    }
+}
diff --git a/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CallbackJVppFacadeNotificationExample.java b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CallbackJVppFacadeNotificationExample.java
new file mode 100644
index 00000000000..832464a22cb
--- /dev/null
+++ b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CallbackJVppFacadeNotificationExample.java
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.vpp.jvpp.core.examples;
+
+import io.fd.vpp.jvpp.JVppRegistry;
+import io.fd.vpp.jvpp.JVppRegistryImpl;
+import io.fd.vpp.jvpp.VppCallbackException;
+import io.fd.vpp.jvpp.core.JVppCore;
+import io.fd.vpp.jvpp.core.JVppCoreImpl;
+import io.fd.vpp.jvpp.core.callback.WantInterfaceEventsReplyCallback;
+import io.fd.vpp.jvpp.core.callback.SwInterfaceEventCallback;
+import io.fd.vpp.jvpp.core.callfacade.CallbackJVppCoreFacade;
+import io.fd.vpp.jvpp.core.dto.WantInterfaceEventsReply;
+import io.fd.vpp.jvpp.core.dto.SwInterfaceEvent;
+
+public class CallbackJVppFacadeNotificationExample {
+
+    private static void testCallbackFacade() throws Exception {
+        System.out.println("Testing CallbackJVppFacade for notifications");
+
+        try (final JVppRegistry registry = new JVppRegistryImpl("CallbackFacadeExample");
+             final JVppCore jvpp = new JVppCoreImpl()) {
+            final CallbackJVppCoreFacade jvppCallbackFacade = new CallbackJVppCoreFacade(registry, jvpp);
+            System.out.println("Successfully connected to VPP");
+
+            final AutoCloseable notificationListenerReg =
+                jvppCallbackFacade.getEventRegistry().registerSwInterfaceEventCallback(
+                        new SwInterfaceEventCallback() {
+                            public void onSwInterfaceEvent(SwInterfaceEvent reply) {
+                                System.out.printf("Received interface notification: ifc: %s%n", reply);
+                            }
+
+                            public void onError (VppCallbackException ex) {
+                                System.out.printf("Received onError exception: call=%s, context=%d, retval=%d%n",
+                                        ex.getMethodName(), ex.getCtxId(), ex.getErrorCode());
+                            }
+                        });
+
+            jvppCallbackFacade.wantInterfaceEvents(NotificationUtils.getEnableInterfaceNotificationsReq(),
+                new WantInterfaceEventsReplyCallback() {
+                    @Override
+                    public void onWantInterfaceEventsReply(final WantInterfaceEventsReply reply) {
+                        System.out.println("Interface events started");
+                    }
+
+                    @Override
+                    public void onError(final VppCallbackException ex) {
+                        System.out.printf("Received onError exception: call=%s, context=%d, retval=%d%n",
+                            ex.getMethodName(), ex.getCtxId(), ex.getErrorCode());
+                    }
+                });
+
+            System.out.println("Changing interface configuration");
+            NotificationUtils.getChangeInterfaceState().send(jvpp);
+
+            Thread.sleep(1000);
+
+            jvppCallbackFacade.wantInterfaceEvents(NotificationUtils.getDisableInterfaceNotificationsReq(),
+                new WantInterfaceEventsReplyCallback() {
+                    @Override
+                    public void onWantInterfaceEventsReply(final WantInterfaceEventsReply reply) {
+                        System.out.println("Interface events stopped");
+                    }
+
+                    @Override
+                    public void onError(final VppCallbackException ex) {
+                        System.out.printf("Received onError exception: call=%s, context=%d, retval=%d%n",
+                            ex.getMethodName(), ex.getCtxId(), ex.getErrorCode());
+                    }
+                });
+
+            notificationListenerReg.close();
+
+            Thread.sleep(2000);
+            System.out.println("Disconnecting...");
+        }
+        Thread.sleep(1000);
+    }
+
+    public static void main(String[] args) throws Exception {
+        testCallbackFacade();
+    }
+}
diff --git a/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CallbackNotificationApiExample.java b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CallbackNotificationApiExample.java
new file mode 100644
index 00000000000..9ed418eaa22
--- /dev/null
+++ b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CallbackNotificationApiExample.java
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.vpp.jvpp.core.examples;
+
+import static io.fd.vpp.jvpp.core.examples.NotificationUtils.getChangeInterfaceState;
+import static io.fd.vpp.jvpp.core.examples.NotificationUtils.getDisableInterfaceNotificationsReq;
+import static io.fd.vpp.jvpp.core.examples.NotificationUtils.getEnableInterfaceNotificationsReq;
+import static io.fd.vpp.jvpp.core.examples.NotificationUtils.printNotification;
+
+import io.fd.vpp.jvpp.JVpp;
+import io.fd.vpp.jvpp.JVppRegistry;
+import io.fd.vpp.jvpp.JVppRegistryImpl;
+import io.fd.vpp.jvpp.VppCallbackException;
+import io.fd.vpp.jvpp.core.JVppCoreImpl;
+import io.fd.vpp.jvpp.core.callback.SwInterfaceEventCallback;
+import io.fd.vpp.jvpp.core.callback.WantInterfaceEventsReplyCallback;
+import io.fd.vpp.jvpp.core.dto.SwInterfaceEvent;
+import io.fd.vpp.jvpp.core.dto.SwInterfaceSetFlagsReply;
+import io.fd.vpp.jvpp.core.dto.WantInterfaceEventsReply;
+
+public class CallbackNotificationApiExample {
+
+    private static void testCallbackApi() throws Exception {
+        System.out.println("Testing Java callback API for notifications");
+        try (final JVppRegistry registry = new JVppRegistryImpl("CallbackNotificationApiExample");
+             final JVpp jvpp = new JVppCoreImpl()) {
+            registry.register(jvpp, new TestCallback());
+            System.out.println("Successfully connected to VPP");
+
+            getEnableInterfaceNotificationsReq().send(jvpp);
+            System.out.println("Interface notifications started");
+            // TODO test ifc dump which also triggers interface flags send
+
+            System.out.println("Changing interface configuration");
+            getChangeInterfaceState().send(jvpp);
+
+            // Notifications are received
+            Thread.sleep(500);
+
+            getDisableInterfaceNotificationsReq().send(jvpp);
+            System.out.println("Interface events stopped");
+
+            Thread.sleep(2000);
+            System.out.println("Disconnecting...");
+        }
+        Thread.sleep(1000);
+    }
+
+    public static void main(String[] args) throws Exception {
+        testCallbackApi();
+    }
+
+    private static class TestCallback implements SwInterfaceEventCallback,
+            WantInterfaceEventsReplyCallback {
+
+        @Override
+        public void onSwInterfaceEvent(
+            final SwInterfaceEvent msg) {
+            printNotification(msg);
+        }
+
+        @Override
+        public void onWantInterfaceEventsReply(final WantInterfaceEventsReply wantInterfaceEventsReply) {
+            System.out.println("Interface notification stream updated");
+        }
+
+        @Override
+        public void onError(VppCallbackException ex) {
+            System.out.printf("Received onError exception in getNodeIndexCallback: call=%s, reply=%d, context=%d%n",
+                ex.getMethodName(), ex.getErrorCode(), ex.getCtxId());
+
+        }
+    }
+}
diff --git a/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CreateSubInterfaceExample.java b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CreateSubInterfaceExample.java
new file mode 100644
index 00000000000..3db6d30a13e
--- /dev/null
+++ b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CreateSubInterfaceExample.java
@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.vpp.jvpp.core.examples;
+
+import static java.util.Objects.requireNonNull;
+
+import io.fd.vpp.jvpp.JVppRegistry;
+import io.fd.vpp.jvpp.JVppRegistryImpl;
+import io.fd.vpp.jvpp.core.JVppCoreImpl;
+import io.fd.vpp.jvpp.core.dto.CreateSubif;
+import io.fd.vpp.jvpp.core.dto.CreateSubifReply;
+import io.fd.vpp.jvpp.core.dto.SwInterfaceDetailsReplyDump;
+import io.fd.vpp.jvpp.core.dto.SwInterfaceDump;
+import io.fd.vpp.jvpp.core.future.FutureJVppCoreFacade;
+import java.nio.charset.StandardCharsets;
+
+/**
+ * <p>Tests sub-interface creation.<br> Equivalent to:<br>
+ *
+ * <pre>{@code
+ * vppctl create sub GigabitEthernet0/9/0 1 dot1q 100 inner-dot1q any
+ * }
+ * </pre>
+ *
+ * To verify invoke:<br>
+ * <pre>{@code
+ * vpp_api_test json
+ * vat# sw_interface_dump
+ * }
+ */
+public class CreateSubInterfaceExample {
+
+    private static SwInterfaceDump createSwInterfaceDumpRequest(final String ifaceName) {
+        SwInterfaceDump request = new SwInterfaceDump();
+        request.nameFilter = ifaceName.getBytes(StandardCharsets.UTF_8);
+        request.nameFilterValid = 1;
+        return request;
+    }
+
+    private static void requireSingleIface(final SwInterfaceDetailsReplyDump response, final String ifaceName) {
+        if (response.swInterfaceDetails.size() != 1) {
+            throw new IllegalStateException(
+                String.format("Expected one interface matching filter %s but was %d", ifaceName,
+                    response.swInterfaceDetails.size()));
+        }
+    }
+
+    private static CreateSubif createSubifRequest(final int swIfIndex, final int subId) {
+        CreateSubif request = new CreateSubif();
+        request.swIfIndex = swIfIndex; // super interface id
+        request.subId = subId;
+        request.noTags = 0;
+        request.oneTag = 0;
+        request.twoTags = 1;
+        request.dot1Ad = 0;
+        request.exactMatch = 1;
+        request.defaultSub = 0;
+        request.outerVlanIdAny = 0;
+        request.innerVlanIdAny = 1;
+        request.outerVlanId = 100;
+        request.innerVlanId = 0;
+        return request;
+    }
+
+    private static void print(CreateSubifReply reply) {
+        System.out.printf("CreateSubifReply: %s%n", reply);
+    }
+
+    private static void testCreateSubInterface() throws Exception {
+        System.out.println("Testing sub-interface creation using Java callback API");
+        try (final JVppRegistry registry = new JVppRegistryImpl("CreateSubInterfaceExample");
+             final FutureJVppCoreFacade jvppFacade = new FutureJVppCoreFacade(registry, new JVppCoreImpl())) {
+            System.out.println("Successfully connected to VPP");
+            Thread.sleep(1000);
+
+            final String ifaceName = "Gigabitethernet0/8/0";
+
+            final SwInterfaceDetailsReplyDump swInterfaceDetails =
+                jvppFacade.swInterfaceDump(createSwInterfaceDumpRequest(ifaceName)).toCompletableFuture().get();
+
+            requireNonNull(swInterfaceDetails, "swInterfaceDump returned null");
+            requireNonNull(swInterfaceDetails.swInterfaceDetails, "swInterfaceDetails is null");
+            requireSingleIface(swInterfaceDetails, ifaceName);
+
+            final int swIfIndex = swInterfaceDetails.swInterfaceDetails.get(0).swIfIndex;
+            final int subId = 1;
+
+            final CreateSubifReply createSubifReply =
+                jvppFacade.createSubif(createSubifRequest(swIfIndex, subId)).toCompletableFuture().get();
+            print(createSubifReply);
+
+            final String subIfaceName = "Gigabitethernet0/8/0." + subId;
+            final SwInterfaceDetailsReplyDump subIface =
+                jvppFacade.swInterfaceDump(createSwInterfaceDumpRequest(subIfaceName)).toCompletableFuture().get();
+            requireNonNull(swInterfaceDetails, "swInterfaceDump returned null");
+            requireNonNull(subIface.swInterfaceDetails, "swInterfaceDump returned null");
+            requireSingleIface(swInterfaceDetails, ifaceName);
+
+            System.out.println("Disconnecting...");
+        }
+        Thread.sleep(1000);
+    }
+
+    public static void main(String[] args) throws Exception {
+        testCreateSubInterface();
+    }
+}
diff --git a/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/FutureApiExample.java b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/FutureApiExample.java
new file mode 100644
index 00000000000..931c9b337aa
--- /dev/null
+++ b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/FutureApiExample.java
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.vpp.jvpp.core.examples;
+
+import io.fd.vpp.jvpp.JVppRegistry;
+import io.fd.vpp.jvpp.JVppRegistryImpl;
+import io.fd.vpp.jvpp.core.JVppCoreImpl;
+import io.fd.vpp.jvpp.core.dto.BridgeDomainDetailsReplyDump;
+import io.fd.vpp.jvpp.core.dto.BridgeDomainDump;
+import io.fd.vpp.jvpp.core.dto.GetNodeIndex;
+import io.fd.vpp.jvpp.core.dto.GetNodeIndexReply;
+import io.fd.vpp.jvpp.core.dto.ShowVersion;
+import io.fd.vpp.jvpp.core.dto.ShowVersionReply;
+import io.fd.vpp.jvpp.core.dto.SwInterfaceDetails;
+import io.fd.vpp.jvpp.core.dto.SwInterfaceDetailsReplyDump;
+import io.fd.vpp.jvpp.core.dto.SwInterfaceDump;
+import io.fd.vpp.jvpp.core.future.FutureJVppCoreFacade;
+import java.nio.charset.StandardCharsets;
+import java.util.Objects;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.Future;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+public class FutureApiExample {
+
+    private static final Logger LOG = Logger.getLogger(FutureApiExample.class.getName());
+
+    private static void testShowVersion(final FutureJVppCoreFacade jvpp) throws Exception {
+        LOG.info("Sending ShowVersion request...");
+        final Future<ShowVersionReply> replyFuture = jvpp.showVersion(new ShowVersion()).toCompletableFuture();
+        final ShowVersionReply reply = replyFuture.get();
+        LOG.info(
+            String.format(
+                "Received ShowVersionReply: context=%d, program=%s, version=%s, buildDate=%s, buildDirectory=%s%n",
+                reply.context, new String(reply.program, StandardCharsets.UTF_8),
+                new String(reply.version, StandardCharsets.UTF_8),
+                new String(reply.buildDate, StandardCharsets.UTF_8),
+                new String(reply.buildDirectory, StandardCharsets.UTF_8)));
+    }
+
+    private static void testEmptyBridgeDomainDump(final FutureJVppCoreFacade jvpp) throws Exception {
+        LOG.info("Sending ShowVersion request...");
+        final BridgeDomainDump request = new BridgeDomainDump();
+        request.bdId = -1; // dump call
+
+        final CompletableFuture<BridgeDomainDetailsReplyDump>
+            replyFuture = jvpp.bridgeDomainDump(request).toCompletableFuture();
+        final BridgeDomainDetailsReplyDump reply = replyFuture.get();
+
+        if (reply == null || reply.bridgeDomainDetails == null) {
+            LOG.severe("Received null response for empty dump: " + reply);
+        } else {
+            LOG.info(
+                String.format(
+                    "Received bridge-domain dump reply with list of bridge-domains: %s",
+                    reply.bridgeDomainDetails));
+        }
+    }
+
+    private static void testGetNodeIndex(final FutureJVppCoreFacade jvpp) {
+        LOG.info("Sending GetNodeIndex request...");
+        final GetNodeIndex request = new GetNodeIndex();
+        request.nodeName = "non-existing-node".getBytes(StandardCharsets.UTF_8);
+        final Future<GetNodeIndexReply> replyFuture = jvpp.getNodeIndex(request).toCompletableFuture();
+        try {
+            final GetNodeIndexReply reply = replyFuture.get();
+            LOG.info(
+                String.format(
+                    "Received GetNodeIndexReply: context=%d, nodeIndex=%d%n", reply.context, reply.nodeIndex));
+        } catch (Exception e) {
+            LOG.log(Level.SEVERE, "GetNodeIndex request failed", e);
+        }
+    }
+
+    private static void testSwInterfaceDump(final FutureJVppCoreFacade jvpp) throws Exception {
+        LOG.info("Sending SwInterfaceDump request...");
+        final SwInterfaceDump request = new SwInterfaceDump();
+        request.nameFilterValid = 0;
+        request.nameFilter = "".getBytes(StandardCharsets.UTF_8);
+
+        final Future<SwInterfaceDetailsReplyDump> replyFuture = jvpp.swInterfaceDump(request).toCompletableFuture();
+        final SwInterfaceDetailsReplyDump reply = replyFuture.get();
+        for (SwInterfaceDetails details : reply.swInterfaceDetails) {
+            Objects.requireNonNull(details, "reply.swInterfaceDetails contains null element!");
+            LOG.info(
+                String.format("Received SwInterfaceDetails: interfaceName=%s, l2AddressLength=%d, adminUpDown=%d, "
+                        + "linkUpDown=%d, linkSpeed=%d, linkMtu=%d%n",
+                    new String(details.interfaceName, StandardCharsets.UTF_8),
+                    details.l2AddressLength, details.adminUpDown,
+                    details.linkUpDown, details.linkSpeed, (int) details.linkMtu));
+        }
+    }
+
+    private static void testFutureApi() throws Exception {
+        LOG.info("Testing Java future API");
+        try (final JVppRegistry registry = new JVppRegistryImpl("FutureApiExample");
+             final FutureJVppCoreFacade jvppFacade = new FutureJVppCoreFacade(registry, new JVppCoreImpl())) {
+            LOG.info("Successfully connected to VPP");
+
+            testEmptyBridgeDomainDump(jvppFacade);
+            testShowVersion(jvppFacade);
+            testGetNodeIndex(jvppFacade);
+            testSwInterfaceDump(jvppFacade);
+
+            LOG.info("Disconnecting...");
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        testFutureApi();
+    }
+}
diff --git a/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/FutureApiNotificationExample.java b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/FutureApiNotificationExample.java
new file mode 100644
index 00000000000..3c84fd7276e
--- /dev/null
+++ b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/FutureApiNotificationExample.java
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.vpp.jvpp.core.examples;
+
+import static io.fd.vpp.jvpp.core.examples.NotificationUtils.getChangeInterfaceState;
+import static io.fd.vpp.jvpp.core.examples.NotificationUtils.getDisableInterfaceNotificationsReq;
+import static io.fd.vpp.jvpp.core.examples.NotificationUtils.getEnableInterfaceNotificationsReq;
+
+import io.fd.vpp.jvpp.JVppRegistry;
+import io.fd.vpp.jvpp.JVppRegistryImpl;
+import io.fd.vpp.jvpp.core.JVppCoreImpl;
+import io.fd.vpp.jvpp.core.future.FutureJVppCoreFacade;
+import io.fd.vpp.jvpp.core.callback.SwInterfaceEventCallback;
+import io.fd.vpp.jvpp.core.dto.SwInterfaceEvent;
+import io.fd.vpp.jvpp.VppCallbackException;
+
+public class FutureApiNotificationExample {
+
+    private static void testFutureApi() throws Exception {
+        System.out.println("Testing Java future API for notifications");
+        try (final JVppRegistry registry = new JVppRegistryImpl("FutureApiNotificationExample");
+             final FutureJVppCoreFacade jvppFacade = new FutureJVppCoreFacade(registry, new JVppCoreImpl());
+             final AutoCloseable notificationListenerReg =
+                 jvppFacade.getEventRegistry()
+                     .registerSwInterfaceEventCallback(new SwInterfaceEventCallback() {
+                         public void onSwInterfaceEvent(SwInterfaceEvent reply) {
+                             System.out.printf("Received interface notification: ifc: %s%n", reply);
+                         }
+
+                         public void onError (VppCallbackException ex) {
+                             System.out.printf("Received onError exception: call=%s, context=%d, retval=%d%n",
+                                     ex.getMethodName(), ex.getCtxId(), ex.getErrorCode());
+                         }
+                     })) {
+            System.out.println("Successfully connected to VPP");
+            jvppFacade.wantInterfaceEvents(getEnableInterfaceNotificationsReq()).toCompletableFuture().get();
+            System.out.println("Interface events started");
+
+            System.out.println("Changing interface configuration");
+            jvppFacade.swInterfaceSetFlags(getChangeInterfaceState()).toCompletableFuture().get();
+
+            Thread.sleep(1000);
+
+            jvppFacade.wantInterfaceEvents(getDisableInterfaceNotificationsReq()).toCompletableFuture().get();
+            System.out.println("Interface events stopped");
+            System.out.println("Disconnecting...");
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        testFutureApi();
+    }
+}
diff --git a/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/FutureApiReadPerfTest.java b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/FutureApiReadPerfTest.java
new file mode 100644
index 00000000000..f335b28dfa3
--- /dev/null
+++ b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/FutureApiReadPerfTest.java
@@ -0,0 +1,137 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.vpp.jvpp.core.examples;
+
+import io.fd.vpp.jvpp.JVppRegistry;
+import io.fd.vpp.jvpp.JVppRegistryImpl;
+import io.fd.vpp.jvpp.core.JVppCoreImpl;
+import io.fd.vpp.jvpp.core.callback.ShowVersionReplyCallback;
+import io.fd.vpp.jvpp.core.dto.*;
+import io.fd.vpp.jvpp.core.future.FutureJVppCoreFacade;
+
+import java.util.concurrent.CompletableFuture;
+import java.util.logging.Logger;
+
+public class FutureApiReadPerfTest {
+
+    private static final Logger LOG = Logger.getLogger(FutureApiReadPerfTest.class.getName());
+    private static final ShowVersion REQUEST = new ShowVersion();
+    private static volatile int currentCount = 0;
+    private static int desiredCount = 0;
+    private static long timeAfter = 0;
+    private static volatile boolean stop = false;
+    /**
+     * Run after reply message is received
+     * in case of running for 1 sec check if time passed (stop variable) and if it does skip processing
+     * in case of running for set amount of REQUEST, record time in which was last reply received
+     * not thread save but since reading part process only one message at a time it's ok
+     */
+    private static Runnable replyFc = () -> {
+        if (stop) {
+            return;
+        }
+        currentCount++;
+        if(currentCount == desiredCount) {
+            timeAfter = System.nanoTime();
+        }
+    };
+
+    /**
+     * Used to reset counters and flags between runs
+     */
+    private static void reset() {
+        currentCount = 0;
+        timeAfter = 0;
+        stop = false;
+    }
+
+    public static boolean stop() {
+        stop = true;
+        return false;
+    }
+
+    /**
+     *
+     * @return time of last reply received
+     * @throws Exception during thread sleep
+     */
+    private static long getTime() throws Exception {
+        while(timeAfter == 0) {
+            LOG.info(String.format("Received %d replies", currentCount));
+            Thread.sleep(1000);
+        }
+        return timeAfter;
+    }
+
+    /**
+     *
+     * @param args - for running for one sec requires no parameter
+     *             - for running for set amount of requests requires one parameters, desired REQUEST amount
+     * @throws Exception if arguments aren't String representations of numbers
+     */
+    public static void main(String[] args) throws Exception {
+        if (args.length == 1) {
+            desiredCount =  Integer.parseUnsignedInt(args[0]);
+            testInvokeCounter(true);
+        } else {
+            testInvokeCounter(false);
+        }
+    }
+
+    /**
+     *
+     * @param setCount true = run with set amount of requests, false = run for 1 sec
+     * @throws Exception
+     */
+    private static void testInvokeCounter(boolean setCount) throws Exception {
+        LOG.info("Testing callback API Invocation Counter");
+        try (final JVppRegistry registry = new JVppRegistryImpl("FutureApiReadPerfTest");
+             final FutureJVppCoreFacade jvpp = new FutureJVppCoreFacade(registry, new JVppCoreImpl())) {
+            if (!setCount) {
+                for(int i = 0; i < 5; i++) {
+                    reset();
+                    LOG.info("Starting invocation for 1sec");
+                    long time = System.nanoTime();
+                    do {
+                        CompletableFuture<ShowVersionReply> replyFuture = jvpp.showVersion(REQUEST).toCompletableFuture();
+                        replyFuture.thenRun(replyFc);
+                    } while (System.nanoTime() - time < 1000000000 || stop());
+                    LOG.info(String.format("Invocation count within 1 second: %d", currentCount));
+                }
+            } else {
+                for (int i = 0; i < 5; i++) {
+                    LOG.info("Starting invocations");
+                    reset();
+                    long time = System.nanoTime();
+                    for (int x = 0; x < desiredCount; x++) {
+                        CompletableFuture<ShowVersionReply> replyFuture = jvpp.showVersion(REQUEST).toCompletableFuture();
+                        replyFuture.thenRun(replyFc);
+                    }
+                    LOG.info("Invocations send");
+                    long timeAfter = getTime();
+                    LOG.info(String.format("Invocations took %d ns (%f invocations/s)", timeAfter - time,
+                            desiredCount * (1000000000.0/(timeAfter - time))));
+                }
+            }
+
+
+            Thread.sleep(1000);
+            LOG.info("Disconnecting...");
+        }
+        Thread.sleep(1000);
+    }
+}
diff --git a/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/L2AclExample.java b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/L2AclExample.java
new file mode 100644
index 00000000000..f89043a3b0a
--- /dev/null
+++ b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/L2AclExample.java
@@ -0,0 +1,195 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.vpp.jvpp.core.examples;
+
+import io.fd.vpp.jvpp.JVppRegistry;
+import io.fd.vpp.jvpp.JVppRegistryImpl;
+import io.fd.vpp.jvpp.core.JVppCoreImpl;
+import io.fd.vpp.jvpp.core.dto.ClassifyAddDelSession;
+import io.fd.vpp.jvpp.core.dto.ClassifyAddDelSessionReply;
+import io.fd.vpp.jvpp.core.dto.ClassifyAddDelTable;
+import io.fd.vpp.jvpp.core.dto.ClassifyAddDelTableReply;
+import io.fd.vpp.jvpp.core.dto.ClassifySessionDetailsReplyDump;
+import io.fd.vpp.jvpp.core.dto.ClassifySessionDump;
+import io.fd.vpp.jvpp.core.dto.ClassifyTableByInterface;
+import io.fd.vpp.jvpp.core.dto.ClassifyTableByInterfaceReply;
+import io.fd.vpp.jvpp.core.dto.ClassifyTableIds;
+import io.fd.vpp.jvpp.core.dto.ClassifyTableIdsReply;
+import io.fd.vpp.jvpp.core.dto.ClassifyTableInfo;
+import io.fd.vpp.jvpp.core.dto.ClassifyTableInfoReply;
+import io.fd.vpp.jvpp.core.dto.InputAclSetInterface;
+import io.fd.vpp.jvpp.core.dto.InputAclSetInterfaceReply;
+import io.fd.vpp.jvpp.core.future.FutureJVppCoreFacade;
+import javax.xml.bind.DatatypeConverter;
+
+/**
+ * <p>Tests L2 ACL creation and read.<br> Equivalent to the following vppctl commands:<br>
+ *
+ * <pre>{@code
+ * vppctl classify table mask l2 src
+ * vppctl classify session acl-hit-next deny opaque-index 0 table-index 0 match l2 src 01:02:03:04:05:06
+ * vppctl set int input acl intfc local0 l2-table 0
+ * vppctl sh class table verbose
+ * }
+ * </pre>
+ */
+public class L2AclExample {
+
+    private static final int LOCAL0_IFACE_ID = 0;
+
+    private static ClassifyAddDelTable createClassifyTable() {
+        ClassifyAddDelTable request = new ClassifyAddDelTable();
+        request.isAdd = 1;
+        request.tableIndex = ~0; // default
+        request.nbuckets = 2;
+        request.memorySize = 2 << 20;
+        request.nextTableIndex = ~0; // default
+        request.missNextIndex = ~0; // default
+        request.skipNVectors = 0;
+        request.matchNVectors = 1;
+        request.mask =
+            new byte[] {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
+                (byte) 0xff, (byte) 0xff, 0x00, 0x00, 0x00, 0x00};
+        return request;
+    }
+
+    private static ClassifyTableInfo createClassifyTableInfoRequest(final int tableId) {
+        ClassifyTableInfo request = new ClassifyTableInfo();
+        request.tableId = tableId;
+        return request;
+    }
+
+    private static ClassifyAddDelSession createClassifySession(final int tableIndex) {
+        ClassifyAddDelSession request = new ClassifyAddDelSession();
+        request.isAdd = 1;
+        request.tableIndex = tableIndex;
+        request.hitNextIndex = 0; // deny
+        request.opaqueIndex = 0;
+        request.advance = 0; // default
+        // match 01:02:03:04:05:06 mac address
+        request.match =
+            new byte[] {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, (byte) 0x01, (byte) 0x02, (byte) 0x03, (byte) 0x04,
+                (byte) 0x05, (byte) 0x06, 0x00, 0x00, 0x00, 0x00};
+        return request;
+    }
+
+    private static ClassifySessionDump createClassifySessionDumpRequest(final int newTableIndex) {
+        ClassifySessionDump request = new ClassifySessionDump();
+        request.tableId = newTableIndex;
+        return request;
+    }
+
+    private static InputAclSetInterface aclSetInterface() {
+        InputAclSetInterface request = new InputAclSetInterface();
+        request.isAdd = 1;
+        request.swIfIndex = LOCAL0_IFACE_ID;
+        request.ip4TableIndex = ~0; // skip
+        request.ip6TableIndex = ~0; // skip
+        request.l2TableIndex = 0;
+        return request;
+    }
+
+    private static ClassifyTableByInterface createClassifyTableByInterfaceRequest() {
+        ClassifyTableByInterface request = new ClassifyTableByInterface();
+        request.swIfIndex = LOCAL0_IFACE_ID;
+        return request;
+    }
+
+    private static void print(ClassifyAddDelTableReply reply) {
+        System.out.printf("ClassifyAddDelTableReply: %s%n", reply);
+    }
+
+    private static void print(ClassifyTableIdsReply reply) {
+        System.out.printf("ClassifyTableIdsReply: %s%n", reply);
+    }
+
+    private static void print(final ClassifyTableInfoReply reply) {
+        System.out.println(reply);
+        if (reply != null) {
+            System.out.println("Mask hex: " + DatatypeConverter.printHexBinary(reply.mask));
+        }
+    }
+
+    private static void print(ClassifyAddDelSessionReply reply) {
+        System.out.printf("ClassifyAddDelSessionReply: context=%s%n", reply);
+    }
+
+    private static void print(final ClassifySessionDetailsReplyDump reply) {
+        System.out.println(reply);
+        reply.classifySessionDetails.forEach(detail -> {
+            System.out.println(detail);
+            System.out.println("Match hex: " + DatatypeConverter.printHexBinary(detail.match));
+        });
+    }
+
+    private static void print(final InputAclSetInterfaceReply reply) {
+        System.out.printf("InputAclSetInterfaceReply: context=%s%n", reply);
+    }
+
+    private static void print(final ClassifyTableByInterfaceReply reply) {
+        System.out.printf("ClassifyAddDelTableReply: %s%n", reply);
+    }
+
+    private static void testL2Acl() throws Exception {
+        System.out.println("Testing L2 ACLs using Java callback API");
+        try (final JVppRegistry registry = new JVppRegistryImpl("L2AclExample");
+             final FutureJVppCoreFacade jvppFacade = new FutureJVppCoreFacade(registry, new JVppCoreImpl())) {
+
+            System.out.println("Successfully connected to VPP");
+            Thread.sleep(1000);
+
+            final ClassifyAddDelTableReply classifyAddDelTableReply =
+                jvppFacade.classifyAddDelTable(createClassifyTable()).toCompletableFuture().get();
+            print(classifyAddDelTableReply);
+
+            final ClassifyTableIdsReply classifyTableIdsReply =
+                jvppFacade.classifyTableIds(new ClassifyTableIds()).toCompletableFuture().get();
+            print(classifyTableIdsReply);
+
+            final ClassifyTableInfoReply classifyTableInfoReply =
+                jvppFacade.classifyTableInfo(createClassifyTableInfoRequest(classifyAddDelTableReply.newTableIndex))
+                    .toCompletableFuture().get();
+            print(classifyTableInfoReply);
+
+            final ClassifyAddDelSessionReply classifyAddDelSessionReply =
+                jvppFacade.classifyAddDelSession(createClassifySession(classifyAddDelTableReply.newTableIndex))
+                    .toCompletableFuture().get();
+            print(classifyAddDelSessionReply);
+
+            final ClassifySessionDetailsReplyDump classifySessionDetailsReplyDump =
+                jvppFacade.classifySessionDump(createClassifySessionDumpRequest(classifyAddDelTableReply.newTableIndex))
+                    .toCompletableFuture().get();
+            print(classifySessionDetailsReplyDump);
+
+            final InputAclSetInterfaceReply inputAclSetInterfaceReply =
+                jvppFacade.inputAclSetInterface(aclSetInterface()).toCompletableFuture().get();
+            print(inputAclSetInterfaceReply);
+
+            final ClassifyTableByInterfaceReply classifyTableByInterfaceReply =
+                jvppFacade.classifyTableByInterface(createClassifyTableByInterfaceRequest()).toCompletableFuture()
+                    .get();
+            print(classifyTableByInterfaceReply);
+
+            System.out.println("Disconnecting...");
+        }
+        Thread.sleep(1000);
+    }
+
+    public static void main(String[] args) throws Exception {
+        testL2Acl();
+    }
+}
diff --git a/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/LispAdjacencyExample.java b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/LispAdjacencyExample.java
new file mode 100644
index 00000000000..f637669dae1
--- /dev/null
+++ b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/LispAdjacencyExample.java
@@ -0,0 +1,125 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.vpp.jvpp.core.examples;
+
+import io.fd.vpp.jvpp.JVppRegistry;
+import io.fd.vpp.jvpp.JVppRegistryImpl;
+import io.fd.vpp.jvpp.core.JVppCoreImpl;
+import io.fd.vpp.jvpp.core.dto.LispAddDelAdjacency;
+import io.fd.vpp.jvpp.core.dto.LispAddDelLocalEid;
+import io.fd.vpp.jvpp.core.dto.LispAddDelLocatorSet;
+import io.fd.vpp.jvpp.core.dto.LispAddDelRemoteMapping;
+import io.fd.vpp.jvpp.core.dto.LispAdjacenciesGet;
+import io.fd.vpp.jvpp.core.dto.LispAdjacenciesGetReply;
+import io.fd.vpp.jvpp.core.dto.LispEnableDisable;
+import io.fd.vpp.jvpp.core.future.FutureJVppCoreFacade;
+import java.nio.charset.StandardCharsets;
+import java.util.concurrent.ExecutionException;
+import java.util.logging.Logger;
+
+/**
+ * Tests lisp adjacency creation and read (custom vpe.api type support showcase).
+ */
+public class LispAdjacencyExample {
+
+    private static final Logger LOG = Logger.getLogger(LispAdjacencyExample.class.getName());
+
+    private static void enableLisp(final FutureJVppCoreFacade jvpp) throws ExecutionException, InterruptedException {
+        final LispEnableDisable request = new LispEnableDisable();
+        request.isEn = 1;
+        jvpp.lispEnableDisable(request).toCompletableFuture().get();
+        LOG.info("Lisp enabled successfully");
+    }
+
+    private static void addLocatorSet(final FutureJVppCoreFacade jvpp) throws ExecutionException, InterruptedException {
+        final LispAddDelLocatorSet request = new LispAddDelLocatorSet();
+        request.isAdd = 1;
+        request.locatorSetName = "ls1".getBytes(StandardCharsets.UTF_8);
+        jvpp.lispAddDelLocatorSet(request).toCompletableFuture().get();
+        LOG.info("Locator set created successfully:" + request.toString());
+    }
+
+    private static void addLocalEid(final FutureJVppCoreFacade jvpp) throws ExecutionException, InterruptedException {
+        final LispAddDelLocalEid request = new LispAddDelLocalEid();
+        request.isAdd = 1;
+        request.locatorSetName = "ls1".getBytes(StandardCharsets.UTF_8);
+        request.eid = new byte[] {1, 2, 1, 10};
+        request.eidType = 0; // ip4
+        request.vni = 0;
+        request.prefixLen = 32;
+        jvpp.lispAddDelLocalEid(request).toCompletableFuture().get();
+        LOG.info("Local EID created successfully:" + request.toString());
+    }
+
+    private static void addRemoteMapping(final FutureJVppCoreFacade jvpp)
+        throws ExecutionException, InterruptedException {
+        final LispAddDelRemoteMapping request = new LispAddDelRemoteMapping();
+        request.isAdd = 1;
+        request.vni = 0;
+        request.eid = new byte[] {1, 2, 1, 20};
+        request.eidLen = 32;
+        request.rlocNum = 1;
+        // FIXME!!!!
+        //request.rlocs = new byte[] {1, 1, 1, 1, 2, 1, 20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+        jvpp.lispAddDelRemoteMapping(request).toCompletableFuture().get();
+        LOG.info("Remote mapping created successfully:" + request.toString());
+    }
+
+    private static void addAdjacency(final FutureJVppCoreFacade jvpp) throws ExecutionException, InterruptedException {
+        final LispAddDelAdjacency request = new LispAddDelAdjacency();
+        request.isAdd = 1;
+        request.leid = new byte[] {1, 2, 1, 10};
+        request.leidLen = 32;
+        request.reid = new byte[] {1, 2, 1, 20};
+        request.reidLen = 32;
+        request.eidType = 0; // ip4
+        request.vni = 0;
+        jvpp.lispAddDelAdjacency(request).toCompletableFuture().get();
+        LOG.info("Lisp adjacency created successfully:" + request.toString());
+    }
+
+    private static void showAdjacencies(final FutureJVppCoreFacade jvpp)
+        throws ExecutionException, InterruptedException {
+        final LispAdjacenciesGetReply reply =
+            jvpp.lispAdjacenciesGet(new LispAdjacenciesGet()).toCompletableFuture().get();
+        LOG.info("Lisp adjacency received successfully:" + reply.toString());
+    }
+
+    private static void testAdjacency(final FutureJVppCoreFacade jvpp) throws Exception {
+        enableLisp(jvpp);
+        addLocatorSet(jvpp);
+        addLocalEid(jvpp);
+        addRemoteMapping(jvpp);
+        addAdjacency(jvpp);
+        showAdjacencies(jvpp);
+    }
+
+    private static void testFutureApi() throws Exception {
+        LOG.info("Create lisp adjacency test");
+        try (final JVppRegistry registry = new JVppRegistryImpl("LispAdjacencyExample");
+             final FutureJVppCoreFacade jvppFacade = new FutureJVppCoreFacade(registry, new JVppCoreImpl())) {
+            LOG.info("Successfully connected to VPP");
+
+            testAdjacency(jvppFacade);
+            LOG.info("Disconnecting...");
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        testFutureApi();
+    }
+}
diff --git a/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/NotificationUtils.java b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/NotificationUtils.java
new file mode 100644
index 00000000000..e963d631d61
--- /dev/null
+++ b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/NotificationUtils.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.vpp.jvpp.core.examples;
+
+import java.io.PrintStream;
+import io.fd.vpp.jvpp.core.dto.SwInterfaceSetFlags;
+import io.fd.vpp.jvpp.core.dto.SwInterfaceEvent;
+import io.fd.vpp.jvpp.core.dto.WantInterfaceEvents;
+
+final class NotificationUtils {
+
+    private NotificationUtils() {}
+
+    static PrintStream printNotification(final SwInterfaceEvent msg) {
+        return System.out.printf("Received interface notification: ifc: %s%n", msg);
+    }
+
+    static SwInterfaceSetFlags getChangeInterfaceState() {
+        final SwInterfaceSetFlags swInterfaceSetFlags = new SwInterfaceSetFlags();
+        swInterfaceSetFlags.swIfIndex = 0;
+        swInterfaceSetFlags.adminUpDown = 1;
+        return swInterfaceSetFlags;
+    }
+
+    static WantInterfaceEvents getEnableInterfaceNotificationsReq() {
+        WantInterfaceEvents wantInterfaceEvents = new WantInterfaceEvents();
+        wantInterfaceEvents.pid = 1;
+        wantInterfaceEvents.enableDisable = 1;
+        return wantInterfaceEvents;
+    }
+
+    static WantInterfaceEvents getDisableInterfaceNotificationsReq() {
+        WantInterfaceEvents wantInterfaceEvents = new WantInterfaceEvents();
+        wantInterfaceEvents.pid = 1;
+        wantInterfaceEvents.enableDisable = 0;
+        return wantInterfaceEvents;
+    }
+}
diff --git a/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/Readme.txt b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/Readme.txt
new file mode 100644
index 00000000000..9fe3c7ac702
--- /dev/null
+++ b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/Readme.txt
@@ -0,0 +1,24 @@
+This package contains basic examples for jvpp. To run the examples:
+
+- Make sure VPP is running
+- From VPP's build-root/ folder execute:
+  - release version: sudo java -cp build-vpp-native/vpp/vpp-api/java/jvpp-registry-18.01.jar:build-vpp-native/vpp/vpp-api/java/jvpp-core-18.01.jar io.fd.vpp.jvpp.core.examples.[test name]
+  - debug version: sudo java -cp build-vpp_debug-native/vpp/vpp-api/java/jvpp-registry-18.01.jar:build-vpp_debug-native/vpp/vpp-api/java/jvpp-core-18.01.jar io.fd.vpp.jvpp.core.examples.[test name]
+
+Available examples:
+CallbackApiExample - Similar to ControlPingTest, invokes more complex calls (e.g. interface dump) using low level JVpp APIs
+CallbackJVppFacadeNotificationExample - Example of interface notifications using Callback based JVpp facade
+CallbackJVppFacadeExample - Execution of more complex calls using Callback based JVpp facade
+CallbackNotificationApiExample -  Example of interface notifications using low level JVpp APIs
+CreateSubInterfaceExample - Example of sub-interface creation
+FutureApiNotificationExample - Example of interface notifications using Future based JVpp facade
+FutureApiExample - Execution of more complex calls using Future based JVpp facade
+L2AclExample - Example of L2 ACL creation
+LispAdjacencyExample - Example of lisp adjacency creation and read (custom vpe.api type support showcase)
+
+CallbackApiReadPerfTest, FutureApiReadPerfTest, CallbackApiWritePerfTest - test provide two ways to count invocations:
+1) maximum number of invocations and received replyies within 1 sec
+sudo java -cp build-vpp-native/vpp/vpp-api/java/jvpp-registry-18.01.jar:build-vpp-native/vpp/vpp-api/java/jvpp-core-18.01.jar io.fd.vpp.jvpp.core.examples.[test name]
+2) measure time in ns from first request to receiving last reply over set amount of requests
+sudo java -cp build-vpp-native/vpp/vpp-api/java/jvpp-registry-18.01.jar:build-vpp-native/vpp/vpp-api/java/jvpp-core-18.01.jar io.fd.vpp.jvpp.core.examples.[test name] [number of request to send]
+
diff --git a/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/test/CallbackApiTest.java b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/test/CallbackApiTest.java
new file mode 100644
index 00000000000..493116c8574
--- /dev/null
+++ b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/test/CallbackApiTest.java
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.vpp.jvpp.core.test;
+
+import io.fd.vpp.jvpp.AbstractCallbackApiTest;
+import io.fd.vpp.jvpp.core.JVppCoreImpl;
+
+import java.util.logging.Logger;
+
+public class CallbackApiTest extends AbstractCallbackApiTest {
+
+    private static Logger LOG = Logger.getLogger(CallbackApiTest.class.getName());
+
+
+    public static void main(String[] args) throws Exception {
+        LOG.info("Testing ControlPing using Java callback API for core plugin");
+        testControlPing(args[0], new JVppCoreImpl());
+    }
+}
diff --git a/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/test/FutureApiTest.java b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/test/FutureApiTest.java
new file mode 100644
index 00000000000..d3acecc29b4
--- /dev/null
+++ b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/test/FutureApiTest.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.vpp.jvpp.core.test;
+
+import io.fd.vpp.jvpp.JVppRegistry;
+import io.fd.vpp.jvpp.JVppRegistryImpl;
+import io.fd.vpp.jvpp.core.JVppCoreImpl;
+import io.fd.vpp.jvpp.core.dto.BridgeDomainDetailsReplyDump;
+import io.fd.vpp.jvpp.core.dto.BridgeDomainDump;
+import io.fd.vpp.jvpp.core.dto.GetNodeIndex;
+import io.fd.vpp.jvpp.core.dto.GetNodeIndexReply;
+import io.fd.vpp.jvpp.core.dto.ShowVersion;
+import io.fd.vpp.jvpp.core.dto.ShowVersionReply;
+import io.fd.vpp.jvpp.core.dto.SwInterfaceDetails;
+import io.fd.vpp.jvpp.core.dto.SwInterfaceDetailsReplyDump;
+import io.fd.vpp.jvpp.core.dto.SwInterfaceDump;
+import io.fd.vpp.jvpp.core.future.FutureJVppCoreFacade;
+import java.nio.charset.StandardCharsets;
+import java.util.Objects;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.Future;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+public class FutureApiTest {
+
+    private static final Logger LOG = Logger.getLogger(FutureApiTest.class.getName());
+
+    public static void main(String[] args) throws Exception {
+        testFutureApi(args);
+    }
+
+    private static void testFutureApi(String[] args) throws Exception {
+        LOG.info("Testing Java future API for core plugin");
+        try (final JVppRegistry registry = new JVppRegistryImpl("FutureApiTest", args[0]);
+             final FutureJVppCoreFacade jvppFacade = new FutureJVppCoreFacade(registry, new JVppCoreImpl())) {
+            LOG.info("Successfully connected to VPP");
+
+            testEmptyBridgeDomainDump(jvppFacade);
+
+            LOG.info("Disconnecting...");
+        }
+    }
+
+    private static void testEmptyBridgeDomainDump(final FutureJVppCoreFacade jvpp) throws Exception {
+        LOG.info("Sending BridgeDomainDump request...");
+        final BridgeDomainDump request = new BridgeDomainDump();
+        request.bdId = -1; // dump call
+
+        final CompletableFuture<BridgeDomainDetailsReplyDump>
+            replyFuture = jvpp.bridgeDomainDump(request).toCompletableFuture();
+        final BridgeDomainDetailsReplyDump reply = replyFuture.get();
+
+        if (reply == null || reply.bridgeDomainDetails == null) {
+            throw new IllegalStateException("Received null response for empty dump: " + reply);
+        } else {
+            LOG.info(
+                String.format(
+                    "Received bridge-domain dump reply with list of bridge-domains: %s",
+                    reply.bridgeDomainDetails));
+        }
+    }
+
+
+}
diff --git a/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/test/Readme.txt b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/test/Readme.txt
new file mode 100644
index 00000000000..b74cf60ae29
--- /dev/null
+++ b/extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/test/Readme.txt
@@ -0,0 +1,18 @@
+This package contains basic tests for jvpp. To run the tests:
+
+- Make sure VPP is running
+- From VPP's build-root/ folder execute:
+  - release version: sudo java -cp build-vpp-native/vpp/vpp-api/java/jvpp-registry-17.10.jar:build-vpp-native/vpp/vpp-api/java/jvpp-core-17.10.jar io.fd.vpp.jvpp.core.test.[test name]
+  - debug version: sudo java -cp build-vpp_debug-native/vpp/vpp-api/java/jvpp-registry-17.10.jar:build-vpp_debug-native/vpp/vpp-api/java/jvpp-core-17.10.jar io.fd.vpp.jvpp.core.test.[test name]
+
+Available tests:
+CallbackApiTest - Similar to ControlPingTest, invokes more complex calls (e.g. interface dump) using low level JVpp APIs
+CallbackJVppFacadeNotificationTest - Tests interface notifications using Callback based JVpp facade
+CallbackJVppFacadeTest - Execution of more complex calls using Callback based JVpp facade
+CallbackNotificationApiTest - Tests interface notifications using low level JVpp APIs
+ControlPingTest - Simple test executing a single control ping using low level JVpp APIs
+CreateSubInterfaceTest - Tests sub-interface creation
+FutureApiNotificationTest - Tests interface notifications using Future based JVpp facade
+FutureApiTest - Execution of more complex calls using Future based JVpp facade
+L2AclTest - Tests L2 ACL creation
+LispAdjacencyTest - Tests lisp adjacency creation and read (custom vpe.api type support showcase)
diff --git a/extras/japi/java/jvpp-core/jvpp_core.c b/extras/japi/java/jvpp-core/jvpp_core.c
new file mode 100644
index 00000000000..09d753026d7
--- /dev/null
+++ b/extras/japi/java/jvpp-core/jvpp_core.c
@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <vnet/vnet.h>
+
+#include <vpp/api/vpe_msg_enum.h>
+#define vl_typedefs             /* define message structures */
+#include <vpp/api/vpe_all_api_h.h>
+#undef vl_typedefs
+
+#include <vnet/api_errno.h>
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <jni.h>
+
+#include <jvpp-common/jvpp_common.h>
+
+// TODO: generate jvpp_plugin_name.c files (or at least reuse plugin's main structure)
+typedef struct {
+    /* Pointer to shared memory queue */
+    svm_queue_t * vl_input_queue;
+
+    /* VPP api client index */
+    u32 my_client_index;
+
+    /* Callback object and class references enabling asynchronous Java calls */
+    jobject callbackObject;
+    jclass callbackClass;
+
+} core_main_t;
+
+core_main_t core_main __attribute__((aligned (64)));
+
+#include "io_fd_vpp_jvpp_core_JVppCoreImpl.h"
+#include "jvpp_core_gen.h"
+
+JNIEXPORT void JNICALL Java_io_fd_vpp_jvpp_core_JVppCoreImpl_init0
+(JNIEnv * env, jclass clazz, jobject callback, jlong queue_address, jint my_client_index) {
+    core_main_t * plugin_main = &core_main;
+    plugin_main->my_client_index = my_client_index;
+    plugin_main->vl_input_queue = uword_to_pointer (queue_address, svm_queue_t *);
+
+    plugin_main->callbackObject = (*env)->NewGlobalRef(env, callback);
+    plugin_main->callbackClass = (jclass)(*env)->NewGlobalRef(env, (*env)->GetObjectClass(env, callback));
+
+    // verify API has not changed since jar generation (exit on mismatch)
+    #define _(N)             \
+        if (get_message_id(env, #N) == 0) return;
+        foreach_supported_api_message;
+    #undef _
+
+    #define _(N,n)                                  \
+        vl_msg_api_set_handlers(get_message_id(env, #N), #n,     \
+                vl_api_##n##_t_handler,             \
+                vl_noop_handler,                    \
+                vl_noop_handler,              \
+                vl_noop_handler,               \
+                sizeof(vl_api_##n##_t), 1);
+        foreach_api_reply_handler;
+    #undef _
+}
+
+JNIEXPORT void JNICALL Java_io_fd_vpp_jvpp_core_JVppCoreImpl_close0
+(JNIEnv *env, jclass clazz) {
+    core_main_t * plugin_main = &core_main;
+
+    // cleanup:
+    (*env)->DeleteGlobalRef(env, plugin_main->callbackClass);
+    (*env)->DeleteGlobalRef(env, plugin_main->callbackObject);
+
+    plugin_main->callbackClass = NULL;
+    plugin_main->callbackObject = NULL;
+}
+
+jint JNI_OnLoad(JavaVM *vm, void *reserved) {
+    JNIEnv* env;
+
+    if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_8) != JNI_OK) {
+        return JNI_EVERSION;
+    }
+
+    if (cache_class_references(env) != 0) {
+        clib_warning ("Failed to cache class references\n");
+        return JNI_ERR;
+    }
+
+    return JNI_VERSION_1_8;
+}
+
+void JNI_OnUnload(JavaVM *vm, void *reserved) {
+    JNIEnv* env;
+    if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_8) != JNI_OK) {
+        return;
+    }
+    delete_class_references(env);
+}
+
+
+