Exception in thread “main” java.lang.IllegalStateException

Posted: May 9, 2012 in Java

IllegalStateException

It is child class of Runtime Exception and its is unchecked. It is raised programmatically when ever a method has invoked at illegal or in appropriate time.

Example 1:

After invalidating a session we are not allowed to call getId() method, violation leads to  illegalThreadStateException.

session.invalidate();

session.getId(1);

output:

Exception in thread “main” java.lang.IllegalStateException

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