ThreadDemo

public class DemoThread extends Thread
{

public static void main(String args[])
{
Thread t = new DemoThread();
t.start();
DemoThread1 t1 = new DemoThread1();
t1.start();
}
@Override
public void run()
{
System.out.println("mainThread");
}

}
class DemoThread1 extends Thread
{
@Override
public void run()
{
System.out.println("secondThread");
}
}