ClientStarter.java

package com.example.ws;

import java.net.URI;
import java.util.UUID;

import javax.websocket.ContainerProvider;
import javax.websocket.Session;
import javax.websocket.WebSocketContainer;

import org.eclipse.jetty.util.component.LifeCycle;

import com.example.services.BroadcastClientEndpoint;
import com.example.services.Message;

public class ClientStarter {
	public static void main( final String[] args ) throws Exception {
		final String client = UUID.randomUUID().toString().substring( 0, 8 );
		
		final WebSocketContainer container = ContainerProvider.getWebSocketContainer();				
		final String uri = "ws://localhost:8080/broadcast";		
		
		try( Session session = container.connectToServer( BroadcastClientEndpoint.class, URI.create( uri ) ) ) {
			for( int i = 1; i <= 10; ++i ) {
				session.getBasicRemote().sendObject( new Message( client, "Message #" + i ) );
				Thread.sleep( 1000 );
			}
		}
		
		// JSR-356 has no concept of Container lifecycle.
		// (This is an oversight on the spec's part)
		// This stops the lifecycle of the Client WebSocketContainer
		if( container instanceof LifeCycle ) {
		    ( ( LifeCycle )container ).stop();
		}
	}
}