Java 多线程 练习 循环输出数字1

package com.test;

public class ThreadTest2 {
	private static byte[] lock = new byte[0];
	private static int i = 0;

	public static void main(String[] args) {

		new Thread() {
			public void run() {
				while (true) {
					synchronized (lock) {
						if (i % 2 == 0) {
							System.out.println(Thread.currentThread().getName()+"-" + i++);
							try {
								lock.wait();
								Thread.sleep(500);
							} catch (InterruptedException e) {
								e.printStackTrace();
							}
						}
					}
				}
			};
		}.start();

		new Thread() {
			public void run() {
				while (true) {
					synchronized (lock) {
						if (i % 2 != 0) {
							System.out.println(Thread.currentThread().getName()+"-" + i++);
							lock.notifyAll();
						}
					}
				}
			};
		}.start();
	}
}