Programming

public void moving()
    {
         if ( Greenfoot.isKeyDown("up") )
         {
             setLocation(0,3) ;
         }
         if ( Greenfoot.isKeyDown("down") )
         {
             setLocation(0,-3) ;
         }
         if ( Greenfoot.isKeyDown("left") )
         {
             setLocation(3,0) ;
         }
         if ( Greenfoot.isKeyDown("right") )
         {
             setLocation(-3,0) ;
         }
    }