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public class ThreadInterrupt extends Thread 
{ 
    public void run() 
    { 
        try 
        { 
            sleep(50000);  // Delay for 50 seconds 
        } 
        catch (InterruptedException e) 
        { 
            System.out.println(e.getMessage()); 
        } 
    } 
    public static void main(String[] args) throws Exception 
    { 
        Thread thread = new ThreadInterrupt(); 
        thread.start(); 
        System.out.println("Interrupt the thread within 50 seconds by pressing any key!"); 
        System.in.read(); 
        thread.interrupt(); 
        thread.join(); 
        System.out.println("The thread has exited!"); 
    } 
}

Interrupt the thread within 50 seconds by pressing any key!

sleep interrupted
The thread has exited!