abuthahir.d

 Profile Answers by abuthahir.d 

• Apr 14th, 2008

 

1.Whenever a dead thread is tried to start
2. When we try to start a running thread
 eg:
  Thread t = new Thread();
 t.start();
t.start();

throws IllegalThreadStateException

charankk

 Profile Answers by charankk 

• Apr 29th, 2008

 

Hi,
There are one scenario where we can use it as shown below.
Two threads within the JVM both gain access to the same  object. One thread invalidates the object and then the other thread attempts to use the same object where its been not exists.

In this scenarios jvm thows the java.lang.IllegalStateException.

mkgraumt

 Profile Answers by mkgraumt 

• Sep 27th, 2008

 

Any attempt to change the status after the thread has been started, throws an IllegalThreadstateException.

Scenerio 1

If a thread has already started and you try to call method setDaemon(boolean) on thread

t.setDaemon(true);

Scenerio 2

If you call start() method on a thread which has already been started, it will throw IllegalThreadstateException.

t.start();