阅读下列程序，写出程序运行结果。
public class Test_l
{ public static void main (String args[ ])
{ Lefthand left;
Righthand right;
left=new Lefthand() ;
right=new Righthand ();
left.start ();
right.start () ;
}
}
class Lefthand extends Thread
{ public void run()
{ for ( int i=l; i<=5; i++)
{ System.out .print ("A");
try {
sleep (500) ;
}
catch (InterruptedException e){}
}
}
}
class Righthand extends Thread
{ public void run()
{ for ( int i=l; i<=5; i++)
{ System.out.print ("B");
try {
sleep (300) ;
}
catch (InterruptedException e){}
}
}
}
