CHECK BOX AND CHECKBOXGROUP PROGRAM IN JAVA

import java.applet.*;

import java.awt.*;

import java.awt.event.*;

/**<applet code=”CheckboxDemo.class” width=500 height=500>

</applet>

*/

public class CheckboxDemo extends Applet implements ItemListener

{

Color color;

Font f;

Checkbox fc1;

Checkbox fc2;

Checkbox fc3;

Checkbox fs1;

Checkbox fs2;

Checkbox fs3;

Checkbox fst1;

Checkbox fst2;

Checkbox fst3;

Checkbox cb1;

Checkbox cb2;

Checkbox cb3;

CheckboxGroup c1;

CheckboxGroup c2;

CheckboxGroup c3;

Object o;

public void init()

{

c1=new CheckboxGroup();

c2=new CheckboxGroup();

c3=new CheckboxGroup();

cb1=new Checkbox(“c1”,null,false);

cb2=new Checkbox(“c2”,null,false);

cb3=new Checkbox(“c3”,null,true);

fc1=new Checkbox(“RED”,c1,false);

fc2=new Checkbox(“GREEN”,c1,false);

fc3=new Checkbox(“BLUE”,c1,false);

fs1=new Checkbox(“15”,c2,false);

fs2=new Checkbox(“25”,c2,false);

fs3=new Checkbox(“35”,c2,false);

fst1=new Checkbox(“BOLD”,c3,false);

fst2=new Checkbox(“ITALIC”,c3,false);

fst3=new Checkbox(“PLAIN”,c3,false);

fc1.addItemListener(this);

fc2.addItemListener(this);

fc3.addItemListener(this);

fst1.addItemListener(this);

fst2.addItemListener(this);

fst3.addItemListener(this);

fs1.addItemListener(this);

fs2.addItemListener(this);

fs3.addItemListener(this);

cb1.addItemListener(this);

cb2.addItemListener(this);

cb3.addItemListener(this);

add(fc1);

add(fc2);

add(fc3);

add(fs1);

add(fs2);

add(fs3);

add(fst1);

add(fst2);

add(fst3);

add(cb1);

add(cb2);

add(cb3);

}

public void itemStateChanged(ItemEvent e)

{

o=e.getItemSelectable();

if(o==fc1)

{

color=Color.red;

repaint();

}

if(o==fc2)

{

color=Color.green;

repaint();

}

if(o==fc3)

{

color=Color.blue;

repaint();

}

if(o==fs1)

{

f=new Font(“TimesNewRoman”,Font.BOLD,15);

repaint();

}

if(o==fs2)

{

f=new Font(“TimesNewRoman”,Font.BOLD,25);

repaint();

}

if(o==fs3)

{

f=new Font(“TimesNewRoman”,Font.BOLD,35);

repaint();

}

if(o==fst1)

{

f=new Font(“TimesNewRoman”,Font.BOLD,15);

repaint();

}

if(o==fst2)

{

f=new Font(“TimesNewRoman”,Font.ITALIC,25);

repaint();

}

if(o==fst3)

{

f=new Font(“TimesNewRoman”,Font.PLAIN,35);

repaint();

}

if(o==cb1)

{

repaint();

}

if(o==cb2)

{

repaint();

}

if(o==cb3)

{

repaint();

}

}

public void paint(Graphics g)

{

g.setFont(f);

g.setColor(color);

g.drawString(“WELCOME TO APPLET”,0,200);

g.drawString(“Chechbox1 state”+cb1.getState(),0,300);

g.drawString(“Chechbox2 state”+cb2.getState(),0,380);

g.drawString(“Chechbox3 state”+cb3.getState(),0,450);

}

}