import java.awt.*;
import java.awt.event.*;
import javax.swing.JOptionPane;
public class Chess extends Frame
{
ChessPad chesspad= new ChessPad();
Chess()
{
add(chesspad);
chesspad.setBounds(70,90,440,440);
Label label=new Label("click to
point,doubled_click to remove,right click to
back",Label.CENTER);
add(label);
label.setBounds(70,55,440,24);
label.setBackground(Color.orange);
addWindowListener
(
new
WindowAdapter()
{
public
void windowClosing(WindowEvent e)
{
System.exit(0);
}
}
);
setLayout(null);
setVisible(true);
setSize(600,550);
}
public static void main(String args[])
{
Chess chess=new Chess();
}
}
class ChessPad extends Panel implements MouseListener,
ActionListener,FocusListener
{
int x = -1, y = -1, chessColor = 1;
String blackname="",whitename="";
Button startbutton=new
Button("restart");
Button inputButton=new Button("input");
TextField text_1=new TextField("black
please"),
text_2=new TextField(""),//white please
text_3=new TextField("black'name"),
text_4=new TextField("white'name");
ChessPad()
{
add(inputButton);
inputButton.setBounds(35,5,60,26);
inputButton.addActionListener(this);
inputButton.addFocusListener(this);
add(text_3);
text_3.setBounds(115,5,90,24);
text_3.addFocusListener(this);
text_3.setEditable(true);
add(text_4);
text_4.setBounds(315,5,90,24);
text_4.addFocusListener(this);
text_4.setEditable(true);
add(startbutton);
startbutton.setBounds(35,36,60,26);
startbutton.setEnabled(false);
startbutton.addActionListener(this);
add(text_1);
text_1.setBounds(115,36,90,24);
text_1.setEnabled(false);
text_1.setEditable(false);
add(text_2);
text_2.setBounds(315,36,90,24);
text_2.setEnabled(false);
text_2.setEditable(false);
setSize(440,440);
setLayout(null);
setBackground(Color.orange);
addMouseListener(this);
}
public void paint(Graphics g)
{
for(int
i=80;i<=400;i=i+20)
{
g.drawLine(40,i,400,i);
}
g.drawLine(40,420,400,420);
for(int
j=40;j<=380;j=j+20)
{
g.drawLine(j,80,j,420);
}
g.drawLine(400,80,400,420);
g.fillOval(97,137,6,6);
g.fillOval(337,137,6,6);
g.fillOval(97,377,6,6);
g.fillOval(337,377,6,6);
g.fillOval(217,257,6,6);
}
public void focusGained(FocusEvent e)
{
Component
com=(Component)e.getSource();
if(com==text_3)
{
text_3.setText("");
}
else if(com==text_4)
{
text_4.setText("");
}
}
public void focusLost(FocusEvent e)
{
}
public void mousePressed(MouseEvent e)
{
if(e.getModifiers()==InputEvent.BUTTON1_MASK)
{
x =
(int)e.getX();
y =
(int)e.getY();
int
a=(x+10)/20,b=(y+10)/20;
ChessPoint_black
chesspoint_black=new ChessPoint_black(this);
ChessPoint_white
chesspoint_white=new ChessPoint_white(this);
if(x/20<2||y/20<4||x/20>19||y/20>20)
{
}
else
{
if(blackname.length()==0||whitename.length()==0)
{
JOptionPane.showMessageDialog(this,"please
input the player's name,and click input button before you start
chess!","reminder",JOptionPane.WARNING_MESSAGE);
}
else
if(blackname.equals("black'name"))
{
JOptionPane.showMessageDialog(this,"please
input the black player's name,and click input
button","reminder",JOptionPane.WARNING_MESSAGE);