t1rt.start(); Test3Thread t3t = new Test3Thread(this); t3t.start();
t1rt.start(); Test3Thread t3t = new Test3Thread(this); t3t.start();
t1rt.start(); Test3Thread t3t = new Test3Thread(this); t3t.start();
t1rt.start(); Test3Thread t3t = new Test3Thread(this); t3t.start();