@Deprecated
    public final void stop() {
        SecurityManager security = System.getSecurityManager();
        if (security != null) {
            checkAccess();
            if (this != Thread.currentThread()) {
                security.checkPermission(SecurityConstants.STOP_THREAD_PERMISSION);
            }
        }
        // A zero status value corresponds to "NEW", it can't change to
        // not-NEW because we hold the lock.
        if (threadStatus != 0) {
            resume(); // Wake up thread if it was suspended; no-op otherwise
        }
 
        // The VM can handle all thread states
        stop0(new ThreadDeath());
    }

public class Test {
    public static void main(String[] args) {
        //測試系統(tǒng)監(jiān)控器
        testSystemMonitor();
    }
 
    /**
     * 測試系統(tǒng)監(jiān)控器
     */
    public static void testSystemMonitor() {
        SystemMonitor sm = new SystemMonitor();
        sm.start();
        try {
            //運行 10 秒后停止監(jiān)控
            Thread.sleep(10 * 1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println("監(jiān)控任務啟動 10 秒后，停止...");
        sm.stop();
    }
}
/*系統(tǒng)監(jiān)控器*/
class SystemMonitor {
 
    private Thread t;
    //線程中斷標識
    private volatile boolean stop = false;
 
    /**
     * 啟動一個線程監(jiān)控系統(tǒng)
     */
    void start() {
        t = new Thread(() -> {
            while (!stop) {//判斷當前線程是否被打斷
                System.out.println("正在監(jiān)控系統(tǒng)...");
                try {
                    Thread.sleep(3 * 1000L);//執(zhí)行 3 秒
                    System.out.println("任務執(zhí)行 3 秒");
                    System.out.println("監(jiān)控的系統(tǒng)正常!");
                } catch (InterruptedException e) {
                    System.out.println("任務執(zhí)行被中斷...");
                    //重新設置線程為中斷狀態(tài)，保證JVM拋異常情況下，中斷狀態(tài)仍為true。
                    Thread.currentThread().interrupt();
                }
            }
        });
        t.start();
    }
    //線程中斷
    void stop() {
        stop = true;
        t.interrupt();
    }
}