1. JAVA WEEK12(B)
/* Week 12 : b) Write a Java program that allows the user to draw lines, rectangles
and ovals. */
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
/* < applet code=shape width=300 height=300>
< /applet>
*/
public class LabPro19 extends Applet
implements MouseListener,ActionListener,MouseMotionListener
{
Button lines,ovals,rect,free;
int ch;
int x,y,x2,y2,k;
public void mouseClicked(MouseEvent e)
{
}
public void mousePressed(MouseEvent e)
{
x=e.getX();
y=e.getY();
}
public void mouseReleased(MouseEvent e)
{
x2=e.getX();
y2=e.getY();
repaint();
}
public void mouseEntered(MouseEvent e)
{
}
public void mouseExited(MouseEvent e)
{
}
public void mouseDragged(MouseEvent e)
{
}
public void mouseMoved(MouseEvent e)
{if(k==1){
x2=e.getX();
y2=e.getY();
repaint();}
}
public void init()
{
lines=new Button("line");
ovals=new Button("oval");
rect =new Button("rect");
free=new Button("free hand");
add(lines);add(ovals);add(rect);add(free);
lines.addActionListener(this);
Page 1

2. JAVA WEEK12(B)
ovals.addActionListener(this);
rect.addActionListener(this);
free.addActionListener(this);
addMouseListener(this);
addMouseMotionListener(this);
}
public void actionPerformed(ActionEvent ki)
{
if(ki.getSource()==lines)
{ ch=1; k=0;}
else if(ki.getSource()==ovals)
{ ch=2; k=0;}
else if(ki.getSource()==rect)
{ch=3; k=0;}
else if(ki.getSource()==free)
{ ch=4; k=1;}
}
public void paint(Graphics g)
{
switch (ch)
{
case 1:g.drawLine(x,y,x2,y2);
break;
case 2:g.drawOval(x,y,(x2-x),(y2-y));
break;
case 3:g.drawRect(x,y,(x2-x),(y2-y));
break;
case 4:repaint();
break;
}
}
/*public void update(Graphics g)
{
paint(g);
}*/
}
Page 2