Trying to run a simple WebSocket test from: https://github.com/arun-gupta/javaee7-samples/tree/master/websocket/binary But this is throwing the following exception: Running org.javaee7.websocket.binary.test.WebsocketByteBufferEndpointTest Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.055 sec <<< FAILURE! testEndPointByteBuffer(org.javaee7.websocket.binary.test.WebsocketByteBufferEndpointTest) Time elapsed: 0.023 sec <<< ERROR! java.lang.RuntimeException: Could not find an implementation class. at javax.websocket.ContainerProvider.getWebSocketContainer(ContainerProvider.java:73) at org.javaee7.websocket.binary.test.WebsocketByteBufferEndpointTest.testEndPointByteBuffer(WebsocketByteBufferEndpointTest.java:63) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) What is missing ? Arun -- http://blog.arungupta.me http://twitter.com/arungupta