Here i created four buttons. If i clicked second one i should able to draw a line.
please tell me what is the mistake..
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
class Polygon extends JFrame implements ActionListener
{
JFrame f;
public JPanel jp1,jp2,jp3;
JButton b1,b2,b3,b4,b5;
JTextField txt;
int x,y;
Polygon()
{
super("Polygon");
setSize(1000,1000);
setVisible(true);
setDefaultCloseOperation(3);
}
void createPanel()
{
b1 = new JButton("Oval");
b2 = new JButton("Rect");
b3 = new JButton("Line");
b4 = new JButton("Clear");
txt = new JTextField(20);
jp1 = new JPanel();
jp2 = new JPanel();
//jp3 = new Jpanel();
add(jp1,BorderLayout.WEST);
add(jp2,BorderLayout.CENTER);
//add(jp3.BorderLayout.NORTH);
GridLayout gl = new GridLayout(5,1);
jp1.setLayout(gl);
jp1.add(b1);
jp1.add(b2);
jp1.add(b3);
jp1.add(b4);
jp2.add(txt);
b2.addActionListener(this);
}
public void actionPerformed(ActionEvent ae)
{
getContentPane().add(jp2);
txt.setText("Hai");
jp2.addMouseMotionListener(new MouseMotionAdapter()
{
public void mouseEntered(MouseEvent me)
{
x = me.getX();
y = me.getY();
repaint();
}
public void paint(Graphics g)
{
Graphics gg = jp2.getGraphics();
gg.drawString(".",x,y);
}
});
}
public static void main(String a[])
{
Polygon p = new Polygon();
p.createPanel();
}
}