Thread join method

Join method:

When thread A executes the join () method of thread B, thread A waits until all thread B is executed.

Join can be used to temporarily join a thread for execution.

Class Demo implements Runnable {public void run () {for (int x = 0; x <70; x ++) {system. out. println (Thread. currentThread (). getName () + "====" + x );}}}

Class JoinDemo {public static void main (String [] args) throws Exception {Demo d = new Demo (); Thread t1 = new Thread (d ); thread t2 = new Thread (d); t1.start (); t2.start (); t1.join (); for (int x = 0; x <80; x ++) {system. out. println ("main .... "+ x);} system. out. println ("over ");}}