I want The threads will execute the following output in the suitable interface.

like this OUTPUT

thread1: Java
thread1: is
thread2: Java
thread1: an
thread2: is
thread1: exciting
thread2: an
thread1: new
thread2: exciting
thread1: language
thread1: for
thread1: concurrent
thread2: new
thread1: programming.
thread2: language
thread2: for
thread2: concurrent
thread2: programming.

but mine not display like that output why ?

My output :

thread1: Java
thread2: Java
thread2: is
thread1: is
thread2: an
thread1: an
thread2: exciting
thread1: exciting
thread2: new
thread2: language
thread2: for
thread2: concurrent
thread1: new
thread2: programming
thread1: language
thread1: for
thread1: concurrent
thread1: programming

class ThreadSynchronization    
{    
    public static void main(String args[])    
    {    
        MyThread thread1 = new MyThread("thread1: ");    
        MyThread thread2 = new MyThread("thread2: ");    
        thread1.start();    
        thread2.start();    
        boolean thread1IsAlive = true;    
        boolean thread2IsAlive = true;    
        do {    
           if (thread1IsAlive && !thread1.isAlive()) {    
               thread1IsAlive = false;    

           }    
           if (thread2IsAlive && !thread2.isAlive()) {    
               thread2IsAlive = false;    

           }    
        } while(thread1IsAlive || thread2IsAlive);    
    }    
}    

class MyThread extends Thread    
{    
static String message[] =    
{ "Java", "is", "an", "exciting", "new", "language", "for", "concurrent", "programming"};    

    public MyThread(String id)    
    {    
        super(id);    
    }    

    public void run()    
    {    
        SynchronizedOutput.displayList(getName(),message);    
    }    

    void randomWait()    
    {    
        try {    
           sleep((long)(1100*Math.random()));    
        } catch (InterruptedException x) {    
           System.out.println("Interrupted!");    
        }    
    }    
}    

class SynchronizedOutput    
{    
public static void displayList(String name,String list[])    
{    
for(int i=0;i<list.length;++i) {    
MyThread t = (MyThread) Thread.currentThread();    
t.randomWait();    
System.out.println(name+list[i]);    
}    
}    
}