Applet Radio Button with ItemListener

In this tutorial, it shows on how to create radio button and implement item listener in java applet.

Code snippet

import java.awt.*;

import java.awt.event.*;

public class RadioButton extends java.applet.Applet implements ItemListener{

CheckboxGroup radioGroup;

Checkbox radio1;

Checkbox radio2;

Checkbox radio3;

Checkbox radio4;

TextField txt;

public void init(){

setLayout(null);

radioGroup = new CheckboxGroup();

radio1 = new Checkbox("Apple", radioGroup,false);

radio2 = new Checkbox("Banana ", radioGroup,false);

radio3 = new Checkbox("PineApple", radioGroup,false);

radio4 = new Checkbox("Guava", radioGroup,false);

txt=new TextField(20);

add(radio1);

add(radio2);

add(radio3);

add(radio4);

add(txt);

radio1.setBounds(20,20,100,20);

radio2.setBounds(20,50,100,20);

radio3.setBounds(20,80,100,20);

radio4.setBounds(20,110,100,20);

txt.setBounds(130,110,100,20);

radio1.addItemListener(this);

radio2.addItemListener(this);

radio3.addItemListener(this);

radio4.addItemListener(this);

}

public void paint(Graphics g) {

}

public void itemStateChanged(ItemEvent e){

ItemSelectable source=e.getItemSelectable();

if (source==radio1){

txt.setText("10");}

if (source==radio2){

txt.setText("5");}

if (source==radio3){

txt.setText("20");}

if (source==radio4){

txt.setText("15");}

}

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