Java – sample programs are required to throw interruptedexception

I'm going through Chapter 9 (threads) of Kathy Sierra scjp 1.5, which is mentioned:

I just need a sample program to know when it happens (I can run it on my machine)?

I searched with Google but couldn't find any sample code to test this feature

Thank you in advance

Solution

Here is an example:

public class Test
{
    public static void main (String[] args)
    {
        final Thread mainThread = Thread.currentThread();

        Thread interruptingThread = new Thread(new Runnable() {
            @Override public void run() {
                // Let the main thread start to sleep
                try {
                    Thread.sleep(500);
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
                mainThread.interrupt();
            }
        });

        interruptingThread.start();

        try {
            Thread.sleep(2000);
        } catch (InterruptedException e) {
            System.out.println("I was interrupted!");
        }
    }
}

To complete it:

>Set a new thread, which will pause for a period of time, and then interrupt the main thread > start a new thread > long sleep (in the main thread) > print out a diagnostic method when we are interrupted (again, in the main thread)

Sleep in the main thread is not absolutely necessary, but it means that the main thread does start sleeping before it is interrupted