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package example.ThreadExample;

/**

* Daemon Thread: 主要是被用來確保執行續提供服務，如：垃圾回收執行續。

* - 當Daemon屬性是 true，表示希望某個執行緒在非Daemon執行緒都結束後也跟著終止

* - 當Daemon屬性是 false，表示主執行續會等待執行續結束，在結束工作。

*/

public class DaemonExample {

public static void main(String[] args) {

NewDaemon nd1 = new NewDaemon();

NewDaemon nd2 = new NewDaemon();

nd1.setDaemon(true);

// nd1.setDaemon(false);

nd1.start();

nd2.start();

}

}

class NewDaemon extends Thread {

public void run() {

if (Thread.currentThread().isDaemon()) {

System.out.println("Daemon Starting...");

try {

sleep(5000);

} catch (InterruptedException e) {

System.out.println("[InterruptedException] " + e);

} catch (Exception e) {

System.out.println("[Exception] " + e);

}

} else {

System.out.println("non-Daemon Starting...");

System.out.println("non-Daemon Ending...");

}

}

}