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How to display all running Thread in Java
Problem Description
How to display all running Thread?
Solution
Following example demonstrates how to display names of all the running threads using getName() method.
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()); } }
Result
The above code sample will produce the following result.
Thread No:0 = main Thread No:1 = thread1
java_threading.htm
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