Thread[Thread-1,5,main] executing print2()
Thread[Thread-3,5,main] executing print2()
Thread[Thread-1,5,main] executing print2()
Thread[Thread-3,5,main] executing print2()
Thread[Thread-3,5,main] executing print2()
Thread[Thread-1,5,main] executing print2()
Thread[Thread-3,5,main] executing print2()
Thread[Thread-1,5,main] executing print2()
Thread[Thread-2,5,main] executing print1()
Thread[Thread-2,5,main] executing print1()
Thread[Thread-2,5,main] executing print1()
Thread[Thread-2,5,main] executing print1()