List<Callable<Object>> list =  new  ArrayList<Callable<Object>>();

        list.add(Executors.callable( new  Runnable() {
             public   void  run() {
                 try  {
                    Thread.sleep( 1000 );
                }  catch  (InterruptedException e) {
                    System.out.println("Interrupted, A.");
                }  finally  {
                    System.out.println("Done, A.");
                }
            }
        }));

        list.add(Executors.callable( new  Runnable() {
             public   void  run() {
                 try  {
                    Thread.sleep( 1000 );
                }  catch  (InterruptedException e) {
                    System.out.println("Interrupted, B.");
                }  finally  {
                    System.out.println("Done, B.");
                }
            }
        }));

        ExecutorService executorService = Executors.newCachedThreadPool();
         try  {
            executorService.invokeAll(list,  100 , TimeUnit.SECONDS);
            System.out.println("All tasks done, main.");
        }  catch  (InterruptedException e) {
            System.out.println("Interrupted, main.");
        }

        Thread t1 =  new  Thread( new  Runnable() {
             public   void  run() {
                 try  {
                    Thread.sleep( 1000 );
                }  catch  (InterruptedException e) {
                    System.out.println("Interrupted, A.");
                }  finally  {
                    System.out.println("Done, A.");
                }
            }
        });
        Thread t2 =  new  Thread( new  Runnable() {
             public   void  run() {
                 try  {
                    Thread.sleep( 1000 );
                }  catch  (InterruptedException e) {
                    System.out.println("Interrupted, B.");
                }  finally  {
                    System.out.println("Done, B.");
                }
            }
        });

        t1.start();
        t2.start();

         try  {
            t1.join();
            t2.join();
            System.out.println("All tasks done, main.");
        }  catch  (InterruptedException e) {
            System.out.println("Interrupted, main.");
        }