Event-handling-in-java/rd.java at master · shinevarada/Event-handling-in-java · GitHub

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import  java.awt.event.*;
import java.awt.*;
import javax.swing.*;
class RadioExample implements ItemListener {
JFrame f; JLabel label;JRadioButton r1,r2,r3;
RadioExample(){
f=new JFrame("Fruits");
label= new JLabel();
 label.setSize(400,100);
label.setBounds(75,200,300,90);
 r1=new JRadioButton("Apple");
  r2=new JRadioButton("Mango");
r3=new JRadioButton("Grapes");
  r1.setBounds(75,50,100,30);
  r2.setBounds(75,100,100,30);
  r3.setBounds(75,150,100,30);
r1.addItemListener(this);
r2.addItemListener(this);
 r3.addItemListener(this);
  ButtonGroup bg=new ButtonGroup();
  bg.add(r1);bg.add(r2); bg.add(r3);
  f.add(r1);f.add(r2); f.add(r3); f.add(label);
  f.setSize(600,600);
  f.setLayout(null);
  f.setVisible(true);
  }

public void itemStateChanged(ItemEvent e) {
        if(e.getSource() ==r1)
           { label.setForeground(Color.MAGENTA);
            label.setText("Apple: "
            + (e.getStateChange()==1?"selected":"unselected")); }
        if(e.getSource() ==r2)
        {label.setForeground(Color.GREEN);
        label.setText("Mango: "
        + (e.getStateChange() ==1?"selected":"unselected"));}
       if(e.getSource() ==r3)
         {label.setForeground(Color.RED);
        label.setText("Grapes: "
        + (e.getStateChange()==1?"selected":"unselected")); }
     }
  public static void main(String[] args) {
      new RadioExample();
    }
    }