public class BoringThread extends Thread {
    public void run() {
        while (true)
            ;
    } // run

    public static void main(String[] args) {
        BoringThread t1 = new BoringThread();
        t1.start();
        BoringThread t2 = new BoringThread();
        t2.start();
    } // main
} // class BoringThread