Why is that Thread interupt method is not breaking its sleep method?

I have this program below

package com;
public class ThreadDemo implements Runnable {
    @Override
    public void run() {
        while(true)
        {
            try {
                System.out.println("Into sleep");
                Thread.sleep(1000000000);
                System.out.println("Out of sleep");
                } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }
    public static void main(String args[]) {
        ThreadDemo tD = new ThreadDemo();
        Thread t1 = new Thread(tD);
        t1.start();
        t1.interrupt();
    }
}

I have started the Thread , and will call its run method and goes into sleep state for the above specified seconds .

i have called t1.interrupt();

This is the screen shot

My question is that why

1.The Thread is not coming out of sleep state ?

2. Why Into sleep is printed twice ??