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Java AWT Checkbox

The Checkbox class is used to create a checkbox. It is used to turn an option on (true) or off (false). Clicking on a Checkbox changes its state from "on" to "off" or from "off" to "on".

AWT Checkbox Class Declaration

Java AWT Checkbox Example

import java.awt.*;
public class CheckboxExample
{
	 CheckboxExample(){
	   Frame f= new Frame("Checkbox Example");
	    Checkbox checkbox1 = new Checkbox("C++");
	    checkbox1.setBounds(100,100, 50,50);
	    Checkbox checkbox2 = new Checkbox("Java", true);
	    checkbox2.setBounds(100,150, 50,50);
	    f.add(checkbox1);
	    f.add(checkbox2);
	    f.setSize(400,400);
	    f.setLayout(null);
	    f.setVisible(true);
	 }
public static void main(String args[])
{
    new CheckboxExample();
}
}

Output:

Java AWT Checkbox Example with ItemListener

import java.awt.*;
import java.awt.event.*;
public class CheckboxExample
{
	 CheckboxExample(){
	    Frame f= new Frame("CheckBox Example");
	    final Label label = new Label();        
	    label.setAlignment(Label.CENTER);
	    label.setSize(400,100);
	    Checkbox checkbox1 = new Checkbox("C++");
	    checkbox1.setBounds(100,100, 50,50);
	    Checkbox checkbox2 = new Checkbox("Java");
	    checkbox2.setBounds(100,150, 50,50);
	    f.add(checkbox1); f.add(checkbox2); f.add(label);
	    checkbox1.addItemListener(new ItemListener() {
	         public void itemStateChanged(ItemEvent e) {             
	            label.setText("C++ Checkbox: " 
	            + (e.getStateChange()==1?"checked":"unchecked"));
	         }
	      });
	    checkbox2.addItemListener(new ItemListener() {
	         public void itemStateChanged(ItemEvent e) {             
	            label.setText("Java Checkbox: " 
	            + (e.getStateChange()==1?"checked":"unchecked"));
	         }
	      });
	    f.setSize(400,400);
	    f.setLayout(null);
	    f.setVisible(true);
	 }
public static void main(String args[])
{
    new CheckboxExample();
}
}

Output:

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