Java ThreadGroup resume() 方法

2024 年 11 月 11 日 | 阅读 1 分钟

ThreadGroup 类的 resume() 方法用于恢复使用 suspend() 方法暂停的所有线程组中的线程。

语法

public final void resume()

Exception

SecurityException: 如果当前线程不允许访问线程组或线程组中的任何线程，则会抛出此异常。

示例

class NewThread extends Thread 
{
    NewThread(String threadname, ThreadGroup tg)
    {
        super(tg, threadname);
    }
    public void run()
    {
        for(int i = 0;i < 10;i++) 
        {
            i++;
        }
        System.out.println(Thread.currentThread().getName() + " completed executing");
    }
}
public class ThreadGroupResumeExp 
{
    public static void main(String arg[]) throws InterruptedException,
        SecurityException, Exception
    {
        // creating the threadGroup
        ThreadGroup tg1 = new ThreadGroup("Parent thread");
        ThreadGroup tg2 = new ThreadGroup(tg1, "Child thread");

        // creating a thread 
        NewThread t1 = new NewThread("Thread-1", tg1);
        System.out.println("Starting of Thread-1");
        t1.start();
        // this will suspend all the threads
        tg1.suspend();
        
        // creating another thread 
        NewThread t2 = new NewThread("Thread-2", tg2);
        System.out.println("Starting of Thread-2");
        t2.start();
        
        // this will resume all the threads suspended by tg1
        tg1.resume();
    }
}   

输出

Starting of Thread-1
Starting of Thread-2
Thread-2 completed executing
Thread-1 completed executing

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Java ThreadGroup resume() 方法

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Java ThreadGroup resume() 方法

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