Using websockets with java?

Question

I was wondering if anyone is aware of tutorial/resource to learn how to connect to a websocket server using a JAVA application, instead of html5. I've been searching and can't find anything as they all give a server websocket example in java but client side in html5.

I know you can do http GET/POST in java, so I was wondering what step I would need to enable websockets via java based console app, vs html5.

try{
connection = (HttpURLConnection)serverAddress.openConnection();
conection.setRequestMethod("GET");
connection.setDoOutput(true);
connection.setReadTimeout(1000);
connection.connect();
reader = new BufferedReader(new InputStreamReader(connection.getInputStreamReader()));
sb = new StringBuilder();

while((line=reader.readLine())!=null){
sb.append("Recieved: "+line+"\n");
}

}catch(Exception e){e.printStackTrace();
}finally{
connection.disconnect();
reader = null;
sb=null;
connection=null;

}

how can I turn this method here into a websocket connection?

Pavel Bucek · Accepted Answer · 2014-02-03 06:41:44Z

3

Take a look at the Java EE 7 WebSocket API. It has a javax.websocket.WebSocketContainer class which has a connectToServer() method that accepts a ClientEndpoint. I haven't used a Java client myself so I don't have any sample code, but if you search for examples with those classes and method you might find something.

[edit] some links:

To be fair - there is plenty of other implementations, you can take a look at Tomcat or Jetty.

edited Feb 3, 2014 at 6:41

Pavel Bucek

5,32430 silver badges44 bronze badges

answered Feb 3, 2014 at 1:37

helderdarocha

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