Create Daemon Thread in Java - Example

What is Daemon Thread in Java? How to create a Daemon Thread in Java?

Daemon Thread in Java is a service provider thread with low-priority.
Daemon threads performs background tasks such as garbage collection and also provides services to the user thread.
Most of the JVM threads are daemon threads.

class MyDaemon implements Runnable {
  Thread thread;
  MyDaemon() {
    thread = new Thread(this);
    thread.setDaemon(true);
    thread.start();
  }
  public boolean isDaemon(){
    return thread.isDaemon();
  }
  public void run() {
    try {
      while(true) {
        System.out.print(".");
        Thread.sleep(100);
      }
    }
    catch(Exception exc) {
      System.out.println("MyDaemon interrupted.");
    }
  }
}

public class Main {
  public static void main(String args[]) throws Exception{
    MyDaemon dt = new MyDaemon();
    if(dt.isDaemon())
      System.out.println("dt is a daemon thread.");

    Thread.sleep(10000);
    System.out.println("\nMain thread ending.");
  }
}

class MyDaemon implements Runnable {

Thread thread;

MyDaemon() {

thread = new Thread(this);

thread.setDaemon(true);

thread.start();

}

public boolean isDaemon(){

return thread.isDaemon();

}

public void run() {

try {

while(true) {

System.out.print(".");

Thread.sleep(100);

}

catch(Exception exc) {

System.out.println("MyDaemon interrupted.");

}

public class Main {

public static void main(String args[]) throws Exception{

MyDaemon dt = new MyDaemon();

if(dt.isDaemon())

System.out.println("dt is a daemon thread.");

Thread.sleep(10000);

System.out.println("\nMain thread ending.");

}

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