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Create Checkbox controls, implement ItemListener and arrange them using FlowLayout

Submitted by Rahimv on Sat, 08/21/2010 - 18:14

/*
Layout Manager
~~~~~~~~~~~~~~
FlowLayout
==========
FlowLayout()
FlowLayout(int how)
FlowLayout(int how, int horz,int vert)
=========================================
FlowLayout.LEFT
FlowLayout.RIGHT
FlowLayout.CENTER
======================================
*/
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
/*
<applet CODE = "FLDemo" width = 600 height = 400>
</applet>
*/
public class FLDemo extends Applet implements ItemListener
{
 String msg = "";
 Checkbox Monitor, Processor, Keyboard, Mouse;
 
 public void init()
 {
  setLayout(new FlowLayout());
  Monitor = new Checkbox("MONITOR");
  Processor = new Checkbox("Processor P4");
  Keyboard= new Checkbox("TVSE GOLD");
  Mouse= new Checkbox("Logitech");
  
  add(Monitor);
  add(Processor);
  add(Mouse);
  add(Keyboard);
  
  Monitor.addItemListener(this);
  Processor.addItemListener(this);
  Mouse.addItemListener(this);
  Keyboard.addItemListener(this);
 }
 
 public void itemStateChanged(ItemEvent ce)
 {
     msg = "";
     if(Processor.getState())
     {
         msg += "Processor";
     }
     if(Monitor.getState())
     {
         msg += "Monitor";
     }
     if(Keyboard.getState())
     {
         msg += "KeyBoard";
     }
     if(Mouse.getState())
     {
         msg += "Mouse";
     }
     repaint();
 }
 
 public void paint(Graphics g)
 {
  g.drawString("You have Purchased : " + msg, 50,100);
 }
 
}