Java Data Type Tutorial - Java Thread.activeCount()

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Syntax

Thread.activeCount() has the following syntax.

public static int activeCount()

Example

In the following code shows how to use Thread.activeCount() method.

//from w  ww  .  ja v a2 s . c o m
public class Main {

  public static void main(String[] args) {
    Thread t = Thread.currentThread();
    t.setName("java2s.com thread");

    System.out.println("Thread = " + t);

    int count = Thread.activeCount();
    System.out.println("currently active threads = " + count);

    Thread th[] = new Thread[count];
    Thread.enumerate(th);

    for (int i = 0; i < count; i++) {
      System.out.println(i + ": " + th[i]);
    }
  }
}

The code above generates the following result.

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