华容道出问题啦，大神快来。

Question

Person.java
package 华容道;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class Person extends JButton implements FocusListener {

	int number;
	Color c = new Color(255,245,170);
	Font font = new Font("宋体",Font.BOLD,12);

	Person(int number,String s){
		super(s);
		setBackground(c);
		setFont(font);
		this.number=number;
		c = getBackground();
		addFocusListener(this);	
	}
	
	public void focusGained(FocusEvent e){
		setBackground(Color.red);
	}
	  
	public void focusLost(FocusEvent e){
		setBackground(c);
	}
}

HRD.java
package 华容道;

public class HRD {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
        new Hua_Rong_Road();
      
	}

}

 Hua_Rong_Road.java

package 华容道;

import java.awt.*;

import javax.swing.*;

import java.awt.event.*;

public class Hua_Rong_Road extends JFrame implements MouseListener,

KeyListener,ActionListener{

Person person[]=new Person[10];

JButton left;

JButton right;

JButton above;

JButton below;

JButton restart=new JButton("重新开始");

public Hua_Rong_Road(){

init();

setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);//

setBounds(100,100,320,500);

setVisible(true);

validate();

addWindowListener( new WindowAdapter()

         {

             public void windowClosing(WindowEvent e)

             {

                 System.exit(0);

             }

         }

   );

}

public void init(){

setLayout(null);

add(restart);

restart.setBounds(100,320,120,35);

restart.addActionListener(this);

String name[]={"曹操","关羽","张飞","刘备","周瑜","黄盖","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, 50);

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 JButton();

right=new JButton();

above=new JButton();

below=new JButton();

add(left);

add(right);

add(above);

add(below);

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;

int 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){}

private void go(Person man, JButton direction) {

// TODO Auto-generated method stub

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 actionPerformed(ActionEvent e){

dispose();

new Hua_Rong_Road();

}

}

下面是程序运行结果，有四个人显示不出来，大神看看吧。