sch.start();
sch.add(new MyThread("Frank"));
sch.add(new MyThread("Marco"));
Util.sleep(1000);
sch.addPrio(new MyThread("Gabi"));
sch.add(new MyThread("Rolf"));
sch.addPrio(new MyThread("Gabi2"));
sch.addPrio(new MyThread("Gabi3"));
sch.addPrio(new MyThread("Gabi4"));
Util.sleep(1000); // increase this if you want to see all thread running (and possibly completing)