用java写两个线程，一个线程打印1-52，另一个线程打印字母A-Z

package com.cn.z_kd_Util.threads;

/**
 * 用java写两个线程，一个线程打印1-52，另一个线程打印字母A-Z
 * 
 * 运行结果：12A34B56C78D910E1112F1314G1516H1718I1920J2122K2324L2526M2728N2930O3132P3334Q3536R3738S3940T4142U4344V4546W4748X4950Y5152Z
 * 
 * @author gegongxian
 *
 */
public class NotifyWait {

	public static void main(String[] args) {
		Object obj = new Object();
		// 启动两个线程
		Thread1 t1 = new Thread1(obj);
		Thread2 t2 = new Thread2(obj);

		t1.start();
		t2.start();
	}
}

class Thread1 extends Thread {
	private Object obj;

	public Thread1(Object obj) {
		this.obj = obj;
	}

	public void run() {
		// 加锁
		synchronized (obj) {
			// 打印1-52
			for (int i = 1; i < 53; i++) {
				System.out.print(i);
				if (i % 2 == 0) {
					// 不能忘了唤醒其它线程
					obj.notifyAll();
					try {
						obj.wait();
					} catch (InterruptedException e) {
						e.printStackTrace();
					}
				}
			}

		}
	}
}

class Thread2 extends Thread {
	private Object obj;

	public Thread2(Object obj) {
		this.obj = obj;
	}

	public void run() {
		synchronized (obj) {
			// 打印A-Z
			for (int i = 0; i < 26; i++) {
				System.out.print((char) ('A' + i));
				// 不能忘了唤醒其它线程
				obj.notifyAll();
				try {
					obj.wait();
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
			}
		}
	}
}