Java Example for Join Thread

  class UserDefineThread extends Thread 
    { 
        UserDefineThread(String Nme) 
         { 
              super("Example of join Thread in Java"); 
             start(); 
         } 
            public void run() 
            { 
               try 
                  { 
                     for(int loop_indx =0;loop_indx<4;loop_indx++) 
                     { 
                        System.out.println((Thread.currentThread()).getName()+ "Here's The Thread..."); 
                            Thread.sleep(500); 
                        } 
                  }  
                    catch (InterruptedException e1) {} 
                        System.out.println((Thread.currentThread()).getName() + "Finishing"); 
           } 
   } 
                  class JavaExampleJoinThread 
                  { 
                      public static void main(String aa[]) 
                       { 
                           UserDefineThread ThreadOne = new UserDefineThread("First"); 
                           UserDefineThread ThreadTwo = new UserDefineThread("Second"); 
                           UserDefineThread ThreadThree = new UserDefineThread("Third"); 
                           UserDefineThread ThreadFour = new UserDefineThread("Fourth"); 
                           try 
                         { 
                                ThreadOne.join(); 
                                ThreadTwo.join(); 
                                ThreadThree.join(); 
                                ThreadThree.join(); 
                            }               
                           catch (InterruptedException e2) {} 
                     } 
               }