isalivedemo.java

JAVA编程思想源代码 值得一下 很难找的

package chapter13;

public class IsAliveDemo extends Thread {
	public IsAliveDemo(String str) {
		super(str); // 调用其父类的构造方法
	}

	public void run() {
		System.out.println(getName() + "运行中。。。");
	}

	public static void main(String args[]) {
		IsAliveDemo t = new IsAliveDemo("线程");
		t.start();
		if (t.isAlive()) {
			System.out.println("线程处于活动的状态！");
		} else {
			System.out.println("线程已经终止！");
		}
		try {
			t.join(); // 等待线程终止，这里有可能发生中断异常
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
		if (t.isAlive()) {
			System.out.println("线程处于活动的状态！");
		} else {
			System.out.println("线程已经终止！");
		}
	}
}