WLS Exception: Need to specify class name in environment or system property Solution

Issue:

When you develop a code for standalone of JMS client. You may got following exception.

 

Exception:

javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file:  java.naming.factory.initial
 at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:645)
 at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:288)
 at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:325)
 at javax.naming.InitialContext.lookup(InitialContext.java:392)

 

Solution:

Please check if you already correctly initate your QueueConnectionFactory object. Sometimes, you might use the correct context object to init QueueConnectionFactory.

For example,

 

Context context = new InitialContext(env);
			InitialContext ctx= new InitialContext();
			QueueConnectionFactory factory = (QueueConnectionFactory) ctx
					.lookup("jms/MyQueueFactory");
			QueueConnection connection = factory.createQueueConnection();
			QueueSession session = connection.createQueueSession(false,
					QueueSession.AUTO_ACKNOWLEDGE);
			Qu

On line 2, we did not use line 1 object to initate QueueConnectionFactory. Correct initial code should be like this.

Context context = new InitialContext(env);
			QueueConnectionFactory factory = (QueueConnectionFactory) context
					.lookup("jms/MyQueueFactory");
			QueueConnection connection = factory.createQueueConnection();
			QueueSession session = connection.createQueueSession(false,
					QueueSession.AUTO_ACKNOWLEDGE);