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本文實例講述了Java守護線程用法。分享給大家供大家參考，具體如下：
一 點睛
針對守護線程，只要有一個用戶線程在執行，這個進程就不會結束。
當線程中只剩下守護線程時，JVM會自動退出，反之，如果還有其他任何用戶線程存在，JVM都不會退出。
二 代碼
public class ThreadDaemon
{
public static void main( String args[] )
{
ThreadTest t = new ThreadTest();
Thread tt = new Thread( t );
tt.setDaemon( true ); // 設置后臺運行
tt.start( );
try
{ // 睡眠1毫秒，避免可能出現的沒有輸出的現象
Thread.sleep( 1 );
}
catch( InterruptedException e )
{
e.printStackTrace();
}
}
}
class ThreadTest implements Runnable
{
public void run()
{
for( int i = 0; true; ++i )
{
System.out.println( i + " " + Thread.currentThread().getName()
+ " is running." );
}
}
}
三 運行
0 Thread-0 is running.
1 Thread-0 is running.
2 Thread-0 is running.
3 Thread-0 is running.
4 Thread-0 is running.
5 Thread-0 is running.
6 Thread-0 is running.
7 Thread-0 is running.
8 Thread-0 is running.
9 Thread-0 is running.
10 Thread-0 is running.
11 Thread-0 is running.
12 Thread-0 is running.
13 Thread-0 is running.
14 Thread-0 is running.
15 Thread-0 is running.
16 Thread-0 is running.
17 Thread-0 is running.
18 Thread-0 is running.
19 Thread-0 is running.
20 Thread-0 is running.
21 Thread-0 is running.
22 Thread-0 is running.
23 Thread-0 is running.
24 Thread-0 is running.
25 Thread-0 is running.
26 Thread-0 is running.
27 Thread-0 is running.
28 Thread-0 is running.
更多java相關內容感興趣的讀者可查看本站專題：《Java進程與線程操作技巧總結》、《Java數據結構與算法教程》、《Java操作DOM節點技巧總結》、《Java文件與目錄操作技巧匯總》和《Java緩存操作技巧匯總》
希望本文所述對大家java程序設計有所幫助。
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