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:





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