如何显示所有正在运行的线程？

解决方法

下面的示例演示如何显示使用getName()方法获得所有正在运行的线程的名称。

public class Main extends Thread {
   public static void main(String[] args) {
      Main t1 = new Main();
      t1.setName("thread1");
      t1.start();
      ThreadGroup currentGroup = 
      Thread.currentThread().getThreadGroup();
      int noThreads = currentGroup.activeCount();
      Thread[] lstThreads = new Thread[noThreads];
      currentGroup.enumerate(lstThreads);
      for (int i = 0; i < noThreads; i++)
      System.out.println("Thread No:" + i + " = "
      + lstThreads[i].getName());
   }
}

结果

上面的代码示例将产生以下结果。

Thread No:0 = main
Thread No:1 = thread1