华容道代码：
package ytu.jsj.com.cn;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;public class Hua_Rong_Road extends JFrame implements MouseListener,KeyListener,ActionListener{Person person[]=new Person[10];JButton left,right,above,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();}public void init(){setLayout(null);add(restart);restart.setBounds(100,320,120,35);restart.addActionListener(this);String name[]={"曹操","关羽","张","刘","周","黄","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,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,JButton 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 actionPerformed(ActionEvent e){dispose();new Hua_Rong_Road();}}package ytu.jsj.com.cn;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Person extends JButton implements FocusListener{int number;Color c=new Color(255,254,170);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);}}
测试类：
package ytu.jsj.com.cn;
public class test {public static void main(String[] args) {new Hua_Rong_Road();}}
图片结果：
