求Java程序源代码注释（越详细越好~）
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","刘","马","许","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 Button(); right=new Button();
above=new Button(); below=new Button();
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,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 actionPerformed(ActionEvent e)
{ dispose();
new Hua_Rong_Road();
}
}
