Four Threads in Java Example

class FourThreads extends Thread 
                      { 
                         FourThreads(String n) 
                       { 
                          super(n); 
                          System.out.println("Thread is :"+getName()); 
                       } 
                          public void run() 
                            { 
                            try 
                              { 
                                for(int i=1;i<=3;i++) 
                                    { 
                                       System.out.println(getName()+":"+i); 
                                       sleep(200); 
                                    } 
                                      } 
                                              catch(InterruptedException e) 
                                       { 
                                           System.out.println(getName()+"is Interrupted"); 
                                       } 
                              } 
                      } 
                              class FourThreadsJavaExample 
                            { 
                            public static void main(String args[]) 
                              { 
                                 FourThreads t1=new FourThreads("First Thread"); 
                                 FourThreads t2=new FourThreads("Second Thread"); 
                                 FourThreads t3=new FourThreads("Third Thread"); 
                                 FourThreads t4=new FourThreads("Fourth Thread"); 
                                 t1.start(); 
                                 t2.start(); 
                                 t3.start(); 
                                 t4.start(); 
                              } 
                             }