Get selected JRadioButton in a ButtonGroup in Java

Description

The following code shows how to get selected JRadioButton in a ButtonGroup.

Example


import java.awt.FlowLayout;
import java.util.Enumeration;
/*  www.jav a  2s. co m*/
import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JRadioButton;

public class Main {
  public static void main(String[] args) {
    JFrame frame = new JFrame("JRadioButton Test");

    frame.setLayout(new FlowLayout());
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JRadioButton button1 = new JRadioButton("Red");
    JRadioButton button2 = new JRadioButton("Green");
    JRadioButton button3 = new JRadioButton("Blue");

    ButtonGroup colorButtonGroup = new ButtonGroup();
    colorButtonGroup.add(button1);
    colorButtonGroup.add(button2);
    colorButtonGroup.add(button3);

    button1.setSelected(true);

    frame.add(new JLabel("Color:"));
    frame.add(button1);
    frame.add(button2);
    frame.add(button3);

    frame.pack();
    frame.setVisible(true);

    for (Enumeration e = colorButtonGroup.getElements(); e.hasMoreElements();) {
      JRadioButton b = (JRadioButton) e.nextElement();
      if (b.getModel() == colorButtonGroup.getSelection()) {
        System.out.println(b.getText());
      }
    }

  }
}

The code above generates the following result.

Get selected JRadioButton in a ButtonGroup in Java




















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