package chapter13;

public class ThreadInterrupt extends Thread {
	volatile boolean stop = false; // 共享變量，用于指示線程中斷

	public static void main(String args[]) throws Exception {
		ThreadInterrupt thread = new ThreadInterrupt();
		System.out.println("Starting thread...");
		thread.start();
		Thread.sleep(3000);
		System.out.println("Asking thread to stop...");
		thread.stop = true; // 改變共享變量，指示線程中斷
		Thread.sleep(3000); // 給一段時間讓線程狀態變為停止
		if (thread.isAlive()) { // 測試線程是否處在活動中
			System.out.println("The thread is not stopped!");
		} else {
			System.out.println("The thread is stopped!");
		}
	}

	public void run() {
		while (!stop) {
			System.out.println("Thread is running...");
			long time = System.currentTimeMillis();
			while ((System.currentTimeMillis() - time < 1000) && (!stop)) {
			} // 系統時間，每隔一秒而且沒有被指示中斷則循環一次
		}
		System.out.println("Thread is exiting under request...");
	}
}