[Java] Event using wait() and notify()

1. Event using wait() and notify()

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public class WaitNotify { public WaitNotify() { } public void waitEvent() throws InterruptedException { synchronized(this) { wait(); } } public void notifyEvent() throws InterruptedException { synchronized(this) { notify(); } } public static void main(String[] args) { WaitNotify wn = new WaitNotify(); Thread thread1 = new Thread( () -> { int i = 0; while(true) { try { wn.waitEvent(); System.out.println("Wake: " + i++); } catch (InterruptedException e) { } } }); Thread thread2 = new Thread( () -> { for( int i=0; i < 10; i++ ) { try { wn.notifyEvent(); Thread.sleep(100); } catch (InterruptedException e) { } } }); thread1.start(); thread2.start(); try { thread1.join(); thread2.join(); } catch (InterruptedException e) { } } }

Result:

Wake: 0
Wake: 1
Wake: 2
Wake: 3
Wake: 4
Wake: 5
Wake: 6
Wake: 7
Wake: 8
Wake: 9