isAlive() and Join() Example in Java By Inheriting Thread Class

class InheritingThreadClass1 extends Thread 
       { 
           InheritingThreadClass1(String n) 
               { 
               super(n); 
               System.out.println("Thread is :"+getName()); 
               } 
               public void run() 
                  { 
                    try 
                       { 
                          for(int i=1;i<=5;i++) 
                              { 
                              System.out.println(getName()+":"+i); 
                              sleep(200); 
                          } 
                           } 
                            catch(InterruptedException e) 
                               { 
                              System.out.println(getName()+" is Interrupted"); 
                           } 
                      }  
       } 
                     class InheritingThreadClass2 extends Thread 
                       { 
                        InheritingThreadClass2(String n) 
                          { 
                           super(n); 
                           System.out.println("Thread is:"+getName()); 
                          } 
                                   public void run() 
                             { 
                               try 
                                   { 
                                     for(int i=1;i<=10;i++) 
                                         { 
                                        System.out.println(getName()+":"+i); 
                                        sleep(200); 
                                         } 
                                   } 
                                        catch(InterruptedException e) 
                                              { 
                                                 System.out.println(getName()+" is Interrupted"); 
                                              } 
                                      } 
                      } 
                                    class isAliveJoinExample  
                                   { 
                                       public static void main(String args[]) 
                                          { 
                                          InheritingThreadClass1 t1=new InheritingThreadClass1("AWT Thread"); 
                                          InheritingThreadClass2 t2=new InheritingThreadClass2("Swing Thread"); 
                                          t1.start(); 
                                          while(t1.isAlive() && t2.isAlive()) 
                                             { 
                                               try 
                                                  { 
                                                 Thread.sleep(400); 
                                                  } 
                                                                 catch(InterruptedException e) 
                                                      { 
                                                      } 
                                                        try 
                                                           { 
                                                              t1.join(); 
                                                              t2.join(); 
                                                           } 
                                                              catch(InterruptedException e) 
                                                               { 
                                                               } 
                                                 } 
                                                             if(!t1.isAlive()) 
                                                System.out.println("AWT Thread is Over"); 
                                                if(!t2.isAlive()) 
                                                           System.out.println("Swing Thread is Over"); 
                                                  } 
                                           }