Java.lang.Thread.isDaemon() Method

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Description

The java.lang.Thread.isDaemon() method tests if this thread is a daemon thread.

Declaration

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

public final boolean isDaemon()

Parameters

  • NA

Return Value

This method returns true if this thread is a daemon thread; false otherwise.

Exception

  • NA

Example

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

package com.tutorialspoint;

import java.lang.*;

class adminThread extends Thread {

   adminThread() {
      setDaemon(true);
   }

   public void run() {
      boolean d = isDaemon();
      System.out.println("isDaemon = " + d);
   }
}

public class ThreadDemo {

  public static void main(String[] args) throws Exception {
    
    Thread thread = new adminThread();
    System.out.println("thread = " + thread.currentThread());
    thread.setDaemon(true);
   
    // this will call run() method
    thread.start();
  }
} 

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

thread = Thread[main,5,main]
isDaemon = true



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