Java using radio button pro

Create AWT Radio Buttons Using Checkbox Group

import java.applet.Applet;

import java.awt.Checkbox;

import java.awt.CheckboxGroup;

public class CreateRadioButtonsExample extends Applet

{

public void init()

{

CheckboxGroup lngGrp = new CheckboxGroup();

Checkbox java = new Checkbox("Java", lngGrp, true);

Checkbox cpp = new Checkbox("C++", lngGrp, true);

Checkbox vb = new Checkbox("VB", lngGrp, true);

add(java);

add(cpp);

add(vb);

   }

}

Get Selected Radio Button

import java.applet.Applet;

import java.awt.Checkbox;

import java.awt.CheckboxGroup;

import java.awt.Graphics;

import java.awt.event.ItemEvent;

import java.awt.event.ItemListener;

public class GetSelectedRadioButtonExample extends Applet implements ItemListener

{   

CheckboxGroup lngGrp = null;   

public void init()

{

lngGrp = new CheckboxGroup();

Checkbox java = new Checkbox("Java", lngGrp, true);

Checkbox cpp = new Checkbox("C++", lngGrp, false);

Checkbox vb = new Checkbox("VB", lngGrp, false);

                   add(java);

add(cpp);

add(vb);

java.addItemListener(this);

cpp.addItemListener(this);

vb.addItemListener(this);

}

public void itemStateChanged(ItemEvent ie)

{

repaint();

}

public void paint(Graphics g)

{

Checkbox chk = lngGrp.getSelectedCheckbox();

g.drawString(chk.getLabel() + " is selected", 10 ,70);

   }

}

Set Selected Radio Button

import java.applet.Applet;

import java.awt.Checkbox;

import java.awt.CheckboxGroup;

public class SetSelectedRadioButtonExample extends Applet

{

CheckboxGroup lngGrp = null;       

public void init()

{

lngGrp = new CheckboxGroup();

Checkbox java = new Checkbox("Java", lngGrp, false);

Checkbox cpp = new Checkbox("C++", lngGrp, false);

Checkbox vb = new Checkbox("VB", lngGrp, false);               

add(java);

add(cpp);

add(vb);

lngGrp.setSelectedCheckbox(cpp);

   }

}

Count Number Of Items in a AWT Choice Or Combobox

import java.applet.Applet;

import java.awt.Choice;

import java.awt.Graphics;

public class CountNumberOfItems extends Applet

{

Choice language = null;

public void init()

{

language = new Choice();

language.add("Java");

language.add("C++");

language.add("VB");

language.add("Perl");

add(language);

}

public void paint(Graphics g)

{

int items = language.getItemCount();

g.drawString("There are " + items + " items in a combobox", 10, 70);

   }

}

Create AWT Choice Or Combo box

import java.applet.Applet;

import java.awt.Choice;

public class CreateChoiceExample extends Applet

{

public void init()

{

Choice language = new Choice();

language.add("Java");

language.add("C++");

language.add("VB");

language.add("Perl");

add(language);

  }

}

Get Particular Item of AWT Choice Or Combo box

import java.applet.Applet;

import java.awt.Choice;

import java.awt.Graphics;

public class GetItemExample extends Applet

{

Choice language = null;     

public void init()

{

language = new Choice();

language.add("Java");

language.add("C++");

language.add("VB");

language.add("Perl");

add(language);             

}     

public void paint(Graphics g)

{

g.drawString(language.getItem(2) + " is at index 2", 10, 70);

   }      

}

Get Selected Item Of AWT Choice Or Combo box

import java.applet.Applet;

import java.awt.Choice;

import java.awt.Graphics;

import java.awt.event.ItemEvent;

import java.awt.event.ItemListener;

public class GetSelectedItemExample extends Applet implements ItemListener

{

Choice language = null;

public void init()

{ 

language = new Choice();

language.add("Java");

language.add("C++");

language.add("VB");

language.add("Perl");               

add(language);

language.addItemListener(this);             

}     

public void paint(Graphics g)

{

g.drawString(language.getSelectedItem(),10, 70);

}

public void itemStateChanged(ItemEvent arg0)

 {

repaint();             

  }

}