WaitNotifyExample

package com.denis.learning.multithreading;

public class WaitNotifyExample {
    private static final Object monitor = new Object();
    private static Integer i = null;

    public static void main(String[] args) {
        new Thread(() -> {
            while (true) {
                try {
                    synchronized (monitor) {
                        while (i == null) {
                            monitor.wait();
                        }
                        System.out.println(i);
                        i = null;
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }).start();

        new Thread(() -> {
            for (int j = 0; j < 100; j++) {
                try {
                    synchronized (monitor) {
                        Thread.sleep(1000);
                        i = j;
                        monitor.notifyAll();
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }).start();
    }

}