小弟初学，又要麻烦大家拉，帮忙看看，华容道的程序

Question

import java.awt.*;
import java.awt.event.*;
public class MoveExample
{   public static void main(String args[])
     {new Hua_Rong_Road();
     }
}
class Person extends Button implements FocusListener
{  int number;
   Color c=new Color(255,245,170);
   Person(int number,String s)
   {super(s);
    setBackground(c);
    this.number=number;
    c=getBackground();
    addFocusListener(this);
   }
   public void focusGained(FocusEvent e)
   {setBackground(Color.red);
   }
   public void focusLost(FocusEvent e)
   {setBackground(c);
   }
 }
 class Hua_Rong_Road extends Frame implements MouseListener,KeyListener,ActionListener
   {Person person[]=new Person[10];
    Button left,right,above,below;
    Button restart=new Button("重新开始");
    public Hua_Rong_Road()
    {init();
     setBounds(100,100,320,360);
     setVisible(true);
     validate();
     addWindowListener(new WindowAdapter()
                         {public void windowClosing(WindowEvent e)
                           {System.exit(0);
                            }
                          }
                          );
   }
   public void init()
   { setLayout(null);
     add(restart);
     restart.setBounds(100,320,120,25);
     restart.addActionListener(this);
     String name[]={"曹操","关羽","张飞","刘备","赵云","黄忠","兵","兵","兵","兵"};
     for(int k=0;k<name.length;k++)
      {  person[k]=new Person(k,name[k]);
         person[k].addMouseListener(this);
         person[k].addKeyListener(this);
         add(person[k]);
       }
      person[0].setBounds(104,54,100,100);
      person[1].setBounds(104,154,100,100);
      person[2].setBounds(54,154,50,100);
      person[3].setBounds(204,154,50,100);
      person[4].setBounds(54,54,50,100);
      person[5].setBounds(204,54,50,100);
      person[6].setBounds(54,254,50,50);
      person[7].setBounds(204,254,50,50);
      person[8].setBounds(104,204,50,50);
      person[9].setBounds(154,204,50,50);
      person[9].requestFocus();
      left=new Button();right=new Button();
      above=new Button();below=new Button();
      left.setBounds(49,49,5,260);
      right.setBounds(254,49,5,260);
      above.setBounds(49,49,210,5);
      below.setBounds(49,304,210,5);
      validate();
     }
     public void KeyTyped(KeyEvent e){}
     public void KeyReleased(KeyEvent e){}
     public void KeyPressed(KeyEvent e)
     { Person man=(Person)e.getSource();
       if(e.getKeyCode()==KeyEvent.VK_DOWN)
        {  go(man,below);
        }
       if(e.getKeyCode()==KeyEvent.VK_UP)
              {  go(man,above);
        }
       if(e.getKeyCode()==KeyEvent.VK_LEFT)
        {  go(man,left);
        }
       if(e.getKeyCode()==KeyEvent.VK_RIGHT)
        {  go(man,right);
        }
     }
     public void mousePressed(MouseEvent e)
     { Person man=(Person)e.getSource();
       int x=-1,y=-1;
       x=e.getX();
       y=e.getY();
       int w=man.getBounds().width;
       int h=man.getBounds().height;
       if(y>h/2)
        {go(man,below);
        }
       if(y<h/2)
        {go(man,above);
        }
       if(x<w/2)
        {go(man,left);
        }
       if(x>w/2)
       {go(man,right);
       }
      }
      public void mouseReleased(MouseEvent e)  {}
      public void mouseEntered(MouseEvent e)   {}
      public void mouseExited(MouseEvent e)    {}
      public void mouseClicked(MouseEvent e)   {}
      public void go(Person man,Button direction)
      {  boolean move=true;
         Rectangle manRect=man.getBounds();
         int x=man.getBounds().x;
         int y=man.getBounds().y;
         if(direction==below)
           y=y+50;
         else if(direction==above)
           y=y-50;
         else if(direction==left)
           x=x+50;
         else if(direction==right)
           x=x-50;
         manRect.setLocation(x,y);
         Rectangle directionRect=direction.getBounds();
         for(int k=0;k<10;k++)
         {  Rectangle personRect=person[k].getBounds();
            if((manRect.intersects(personRect))&&(man.number!=k))
              {move=false;
              }
         }
         if(manRect.intersects(directionRect))
          { move=false;
          }
         if(move==true)
         { man.setLocation(x,y);
         }
         }
         public void avtionPerformed(ActionEvent e)
         { dispose();
           new Hua_Rong_Road();
          }
       }
编译有一个错误：D:\新建文件夹\MoveExample.java:25: Hua_Rong_Road is not abstract and does not override abstract method keyTyped(java.awt.event.KeyEvent) in java.awt.event.KeyListener
 class Hua_Rong_Road extends Frame implements MouseListener,KeyListener,ActionListener
 ^

Answer 1

类型 Hua_Rong_Road 必须实现继承的抽象方法 KeyListener.keyReleased
 （KeyEvent）
我用eclipse检查，报错，估计你少使用了接口中的方法，接口中的方法必须都写入方法体内，如果不想实现，
写入空方法体。 

Answer 2

MouseListener,KeyListener,ActionListener 
把 这些接口的方法都实现了

Answer 3

对！里面的所有方法都要实现，就算是空方法体也要写出来
或者把MouseListener,KeyListener,ActionListener 都改成MouseAdapter,KeyAdapter,ActionAdapter 

Answer 4

public void keyPressed(KeyEvent e) {
// TODO Auto-generated method stub

}
public void keyReleased(KeyEvent e) {
// TODO Auto-generated method stub

}
public void keyTyped(KeyEvent e) {
// TODO Auto-generated method stub

}
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub

} 
这是没有重载的方法。