Java.lang.Thread.setName() Method


The java.lang.Thread.setName() method changes the name of this thread to be equal to the argument name.


Following is the declaration for java.lang.Thread.setName() method

public final void setName(String name)


name − This is the new name for this thread

Return Value

This method does not return any value.


SecurityException − if the current thread cannot modify this thread.


The following example shows the usage of java.lang.Thread.setName() method.

package com.tutorialspoint;

import java.lang.*;

public class ThreadDemo {

   public static void main(String[] args) {

      Thread t = Thread.currentThread();
      // prints the thread name
      System.out.println("Thread = " + t);
      // change the thread name
      t.setName("Admin Thread");
      // prints the thread after changing name
      System.out.println("Thread after changing name = " + t);
      int count = Thread.activeCount();
      System.out.println("currently active threads = " + count);

Let us compile and run the above program, this will produce the following result −

Thread = Thread[main,5,main]
Thread after changing name = Thread[Admin Thread,5,main]
currently active threads = 1