Showing posts with label CheckBox class demo. Show all posts
Showing posts with label CheckBox class demo. Show all posts

Apr 19, 2012

Check Box


The Checkbox class is used to create a labelled check box. It has two parts a caption and state. The caption is text that represents the label of the control and the state is the boolean value(true/false).
By default the state is false  which means the check box is unchecked. 

Constructors:

        Checkbox(String s)
        Checkbox(String s,Initial state )

Methods:

        getState()  - returns the current state of the check box.
        setState(boolean state)  - It is used to set the state of check box.

Example:

import java.applet.*;
import java.awt.*;

public class CheckboxDemo extends Applet
{
    public void init()
    {
        setLayout(new GridLayout(3, 1));
        Checkbox c1=new Checkbox("Tamil", true);
        Checkbox c2=new Checkbox("English");
        Checkbox c3=new Checkbox("Maths");
        add(c1);
        add(c2);
        add(c3);
    }
}
/*
 * <applet code="CheckboxDemo.class" width=200 height=75>
 * </applet>
 */

How to Execute this Example??

d:\>  javac CheckboxDemo.java
d:\>  appletviewer CheckboxDemo.java

Output: