双方一对一次下棋子，单机棋子可以悔棋，双击棋子可以去掉棋子
代码如下：
import java.awt.*;
import java.awt.event.*;
//创建棋盘的类
class ChessPad extends Panel implements MouseListener,ActionListener
{
int x=-1,y=-1,棋子颜色=1;
Button button = new Button("重新开局");
TextField text_1 = new TextField("请黑子下棋");
TextField text_2 = new TextField();
ChessPad()
{
setSize(440,440);
setLayout(null);
setBackground(Color.orange);
addMouseListener(this);
add(button);
button.setBounds(10,5,60,26);
button.addActionListener(this);
add(text_1);
text_1.setBounds(90,5,90,24);
add(text_2);
text_2.setBounds(290,5,90,24);
text_1.setEditable(false);
text_2.setEditable(false);
}
//绘制围棋棋盘的外观
public void paint(Graphics g)
{
for(int i=40;i<=400;i+=20)
{
g.drawLine(40,i,400,i);
}
for(int j=40;j<=400;j+=20)
{
g.drawLine(j,40,j,400);
}
//五个小点
g.fillOval(97,97,6,6);
g.fillOval(97,337,6,6);
g.fillOval(337,97,6,6);
g.fillOval(337,337,6,6);
g.fillOval(217,217,6,6);
}
//按下鼠标左键下棋子事件
public void mousePressed(MouseEvent e)
{
if(e.getModifiers() == InputEvent.BUTTON1_MASK)
{
//获取鼠标按下时的坐标
x=(int)e.getX();
y=(int)e.getY();
//定义两颗棋子，白色棋子和黑色棋子
ChessPoint_black chesspoint_black = new ChessPoint_black(this);
ChessPoint_white chesspoint_white = new ChessPoint_white(this);
int a=(x+10)/20,b=(y+10)/20;
//鼠标的位置超出棋盘，则不下棋子
if(x/20<2 || y/20<2 || x/20>19 || y/20>19)
{}
else
{
if(棋子颜色==1)
{
this.add(chesspoint_black);
chesspoint_black.setBounds(a*20-10,b*20-10,20,20);
棋子颜色 = 棋子颜色*(-1);
text_1.setText(null);
text_2.setText("请白棋下子");
}
else if(棋子颜色==-1)
{
this.add(chesspoint_white);
chesspoint_white.setBounds(a*20-10,b*20-10,20,20);
棋子颜色 = 棋子颜色*(-1);
text_1.setText("请黑棋下子");
text_2.setText(null);
}
}
}
}
public void mouseReleased(MouseEvent e){}
public void mouseEntered(MouseEvent e){}
public void mouseExited(MouseEvent e){}
public void mouseClicked(MouseEvent e){}
//响应button 事件
public void actionPerformed(ActionEvent e)
{
this.removeAll();
棋子颜色=1;
add(button);
button.setBounds(10,5,60,26);
add(text_1);
text_1.setBounds(90,5,90,24);
add(text_2);
text_2.setBounds(290,5,90,24);
text_1.setText("请下黑棋");
text_2.setText(null);
}
}
//负责创建黑色棋子的类
class ChessPoint_black extends Canvas implements MouseListener
{
ChessPad chesspad=null;
ChessPoint_black(ChessPad p)
{
setSize(20,20);
chesspad=p;
addMouseListener(this);
}
//绘制棋子的大小
public void paint(Graphics g)
{
g.setColor(Color.black);
g.fillOval(0,0,20,20);
}
public void mousePressed(MouseEvent e)
{
if(e.getModifiers()==InputEvent.BUTTON3_MASK)
{
chesspad.remove(this);
chesspad.棋子颜色=1;
chesspad.text_2.setText(null);
chesspad.text_1.setText("请黑棋下子");
}
}
public void mouseReleased(MouseEvent e){}
public void mouseEntered(MouseEvent e){}
public void mouseExited(MouseEvent e){}
public void mouseClicked(MouseEvent e)
{
if(e.getClickCount()>=2)
chesspad.remove(this);
}
}
//负责创建白色棋子的类
class ChessPoint_white extends Canvas implements MouseListener
{
ChessPad chesspad=null;
ChessPoint_white(ChessPad p)
{
setSize(20,20);
chesspad=p;
addMouseListener(this);
}
//绘制棋子的大小
public void paint(Graphics g)
{
g.setColor(Color.white);
g.fillOval(0,0,20,20);
}
public void mousePressed(MouseEvent e)
{
if(e.getModifiers()==InputEvent.BUTTON3_MASK)
{
chesspad.remove(this);
chesspad.棋子颜色=-1;
chesspad.text_2.setText("请白棋下子");
chesspad.text_1.setText(null);
}
}
public void mouseReleased(MouseEvent e){}
public void mouseEntered(MouseEvent e){}
public void mouseExited(MouseEvent e){}
public void mouseClicked(MouseEvent e)
{
if(e.getClickCount()>=2)
chesspad.remove(this);
}
}
//棋盘的载体窗口类
public class Chess extends Frame
{
ChessPad chesspad = new ChessPad();
Chess()
{
setVisible(true);
setLayout(null);
Label label = new Label("单机左键下棋子，吃棋子双击，用右键击棋
子悔棋",Label.CENTER);
add(label);
label.setBounds(70,55,440,26);
label.setBackground(Color.orange);
add(chesspad);
chesspad.setBounds(70,90,440,440);
addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
}
);
pack();
setSize(600,550);
}
public static void main(String args[])
{
Chess chess = new Chess();
}
}
效果图：
