Thread
類的resume()
方法僅用於suspend()
方法。 此方法用於恢復使用suspend()
方法掛起的執行緒。此方法允許掛起的執行緒再次啟動。
public final void resume()
異常
SecurityException
:如果當前執行緒無法修改執行緒。範例
public class JavaResumeExp extends Thread
{
public void run()
{
for(int i=1; i<5; i++)
{
try
{
// thread to sleep for 500 milliseconds
sleep(500);
System.out.println(Thread.currentThread().getName());
}catch(InterruptedException e){System.out.println(e);}
System.out.println(i);
}
}
public static void main(String args[])
{
// creating three threads
JavaResumeExp t1=new JavaResumeExp ();
JavaResumeExp t2=new JavaResumeExp ();
JavaResumeExp t3=new JavaResumeExp ();
// call run() method
t1.start();
t2.start();
t2.suspend(); // suspend t2 thread
// call run() method
t3.start();
t2.resume(); // resume t2 thread
}
}
執行上面範例程式碼,得到以下結果:
Thread-0
1
Thread-2
1
Thread-1
1
Thread-0
2
Thread-2
2
Thread-1
2
Thread-0
3
Thread-2
3
Thread-1
3
Thread-0
4
Thread-2
4
Thread-1
4