Java的多线程定时器

Java写的一个定时器，多线程：

1/*
2 * To change this license header, choose License Headers in Project Properties.
3 * To change this template file, choose Tools | Templates
4 * and open the template in the editor.
5 */
6package javaapplication1;
7
8import static java.lang.Thread.sleep;
9import java.nio.ByteBuffer;
10import java.text.ParseException;
11import java.text.SimpleDateFormat;
12import java.util.Calendar;
13import java.util.Date;
14import java.util.HashMap;
15import java.util.concurrent.atomic.AtomicBoolean;
16import java.util.logging.Level;
17import java.util.logging.Logger;
18
19/**
20 *
21 * @author Qyee
22 */
23public class JavaApplication1 {
24    private static final Object lock = new Object();
25    private static Thread execTrhead;
26    private static AtomicBoolean bRunning = new AtomicBoolean(false);
27
28    /**
29     * @param args the command line arguments
30     */
31    public static void main(String[] args) throws ParseException, InterruptedException {
32        // TODO code application logic here
33
34        execTrhead = new Thread(new Runnable() {
35            public void run() {
36                do {
37                    bRunning.set(true);
38                    System.out.println("doing 1");
39                    synchronized (lock) {
40                        try {
41                            lock.wait(1000);
42                        } catch (InterruptedException ex) {
43                            Logger.getLogger(JavaApplication1.class.getName()).log(Level.SEVERE, null, ex);
44                        }
45                    }
46                    System.out.println("doing 2");
47                } while (bRunning.get());
48            }
49        });
50        execTrhead.start();
51
52        while (true) {
53            System.out.println("notify");
54            sleep(2000);
55            synchronized (lock) {
56                lock.notify();
57            }
58        }
59    }
60}