Get Selected Radio Button Example

/*
	Get Selected Radio Button Example 
	This java example shows how to get selected radio button using 
	Java AWT CheckboxGroup class.
*/
 
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;
 
 
/*
<applet code="GetSelectedRadioButtonExample" width=200 height=200>
</applet>
*/
 
 
public class GetSelectedRadioButtonExample extends Applet implements ItemListener{
 
	CheckboxGroup lngGrp = null;
 
	public void init(){
 
		//create group
		lngGrp = new CheckboxGroup();
 
		//create checkboxes and add to group
		Checkbox java = new Checkbox("Java", lngGrp, true);
		Checkbox cpp = new Checkbox("C++", lngGrp, false);
		Checkbox vb = new Checkbox("VB", lngGrp, false);
 
		//add radio buttons
		add(java);
		add(cpp);
		add(vb);
 
		//add listeners
		java.addItemListener(this);
		cpp.addItemListener(this);
		vb.addItemListener(this);
	}
 
 
	public void itemStateChanged(ItemEvent ie) {
		repaint();
	}
 
	public void paint(Graphics g){
 
		/*
		 * To get selected radio button, use
		 * Checkbox getSelectedCheckbox()
		 * method of CheckboxGroup class.
		 */
 
		Checkbox chk = lngGrp.getSelectedCheckbox(); 
 
		g.drawString(chk.getLabel() + " is selected", 10 ,70);
	}
}