Create New Thread Using Runnable Example

/*
 Create New Thread Using Runnable Example
 This Java example shows how to create a new thread by implementing
 Java Runnable interface.
*/
 
/*
 * To create a thread using Runnable, a class must implement
 * Java Runnable interface.
 */
public class CreateThreadRunnableExample implements Runnable{
 
 /*
  * A class must implement run method to implement Runnable 
  * interface. Signature of the run method is,
  * 
  * public void run()
  * 
  * Code written inside run method will constite a new thread.
  * New thread will end when run method returns.
  */
 public void run(){
 
  for(int i=0; i < 5; i++){
   System.out.println("Child Thread : " + i);
 
   try{
    Thread.sleep(50);
   }
   catch(InterruptedException ie){
    System.out.println("Child thread interrupted! " + ie);
   }
  }
 
  System.out.println("Child thread finished!");
 }
 
 public static void main(String[] args) {
 
  /*
   * To create new thread, use
   * Thread(Runnable thread, String threadName)
   * constructor.
   * 
   */
 
  Thread t = new Thread(new CreateThreadRunnableExample(), "My Thread");
 
  /*
   * To start a particular thread, use
   * void start() method of Thread class.
   * 
   * Please note that, after creation of a thread it will not start
   * running until we call start method.
   */
 
  t.start();
 
  for(int i=0; i < 5; i++){
 
   System.out.println("Main thread : " + i);
 
   try{
    Thread.sleep(100);
   }
   catch(InterruptedException ie){
    System.out.println("Child thread interrupted! " + ie);
   }
  }
  System.out.println("Main thread finished!");
 }
}
 
/*
Typical output of this thread example would be
 
Main thread : 0
Child Thread : 0
Child Thread : 1
Main thread : 1
Main thread : 2
Child Thread : 2
Child Thread : 3
Main thread : 3
Main thread : 4
Child Thread : 4
Child thread finished!
Main thread finished!
 
*/