学步园

如题，有时候我们需要在Main函数中写测试代码，并且需要在异步线程中执行任务，任务执行完之后才退出主线程，如何做到的呢，请看如下代码：

public class TestMain {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		
		System.out.println("-------work------start---------");
		
		LockHandler mHandler=new LockHandler();
		Thread mThread=new Thread(new WorkRunnable(mHandler));
		mThread.setDaemon(true);
		mThread.start();
		mHandler.waitForDebug();
		
		System.out.println("-------work------end---------");
	}
	
	public static class WorkRunnable implements Runnable
	{
		public LockHandler mHandler;
		
		public WorkRunnable(LockHandler mHandler) 
		{
			this.mHandler = mHandler;
		}

		public void run() {
			
			//TODO 
			
			try {
				Thread.sleep(5000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
			
			System.out.println("-------我在异步线程中睡了五秒---------");
			
			mHandler.notifytForDebug();
		}
	}
	
	public static class LockHandler
	{
		public synchronized void waitForDebug()
		{
			try {
				this.wait();
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
		
		public synchronized void notifytForDebug()
		{
			this.notifyAll();
		}
	}

}

执行结果：

-------work------start---------
-------我在异步线程中睡了五秒---------
-------work------end---------

只需要重写WorkRunnable类的run()方法，so easy !