Java多线程练习

国际惯例，先贴出代码

package jiankong;

import java.util.Date;

public class jiankong {
	
	public static void main(String [] args) {
		MyThread thread = new MyThread();
		thread.start();
		
		try {
			Thread.sleep(10000);
			System.out.println("捕获未成功！");
			Thread.interrupted();
		}
		catch (InterruptedException e) {System.out.println("主线程已死！");}//这里不明白catch的含义
	    System.out.println("检测主线程是否死亡！");
		//thread.interrupt();
	}
}

class MyThread extends Thread {
	boolean flag = true;
	//Thread flag = false;
	public void run() {
		while (flag) {
			System.out.println("+++ " + new Date() + "+++");
			try {
				sleep(1000);
			} catch (InterruptedException e) {
				return;
			}
		}
	}
}

最近写的，不过多线程好多生疏的地方啊，就上面的这个例子，原来的代码到是会，然后我修改了下，就再想，既然Thread是主线程，那我能不能中断主线程呢，我就在catch那里测试，按道理来说，如果主线程被中断的话，应该会执行的啊，可是调试的时候就是不出。。。。郁闷！！！自学果然吃力不讨好

后面附上之前练习的一个小程序：

public class hello {
	public static void main(String args[]) {
		runner r = new runner();
		//r.run();
		Thread t = new Thread(r);
		t.start();

		for (int i = 0; i < 100; i++) {
			System.out.println("main " + i);
		}
	}
}
//class runner {
class runner implements Runnable {
	public void run() {
		for (int i = 0; i < 100; i++) {
			System.out.println("runner " + i);
		}
	}
}