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DaemonExample.java
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37 lines (33 loc) · 1.16 KB
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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...");
}
}
}