IllegalThreadStateException - A Programmer's Guide to Java SCJP Certification - 3rd Ed

[Rashmi Jaik]

This is from the sample chapter on Threads ( for SCJP ) from A Programmer's Guide to Java SCJP Certification - 3rd Ed book.

Threads have been explained very well in this chapter.

In section 13.3 The Main Thread there's a mention of what causes IllegalThreadStateException, most of the text is very easy to follow and try out with code

Based on what is mentioned in the sample chapter, I tried

   
class IllegalStateTest implements Runnable{

        public void run(){

                for(int i=0; i <4; i++){
                        System.out.println("Running... " + i );
                }
        }

        static public void main(String[] args){

                IllegalStateTest ist = new IllegalStateTest();

                Thread t = new Thread(ist);

                t.start();

                t.setDaemon( true );

        }

}
 

See http://www.coderanch.com/t/432566/Programmer-Certification-SCJP/certification/FYI-Website-Programmer-s-Guide
for sample chapter on Threads (for SCJP)