/* Swingサンプル */

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import java.awt.Container;
import java.awt.BorderLayout;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

class SSample15_1 extends JFrame implements ActionListener{
  JRadioButton[] radio;

  public static void main(String args[]){
    SSample15_1 frame = new SSample15_1("タイトル");
    frame.setVisible(true);
  }

  SSample15_1(String title){
    setTitle(title);
    setBounds(100, 100, 300, 250);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JPanel p = new JPanel();

    radio = new JRadioButton[3];
    radio[0] = new JRadioButton("Orange");
    radio[1] = new JRadioButton("Melon", true);
    radio[2] = new JRadioButton("Grape");

    ButtonGroup group = new ButtonGroup();
    group.add(radio[0]);
    group.add(radio[1]);
    group.add(radio[2]);

    p.add(radio[0]);
    p.add(radio[1]);
    p.add(radio[2]);

    JPanel buttonpanel = new JPanel();

    JButton button = new JButton("button");
    button.addActionListener(this);

    buttonpanel.add(button);

    Container contentPane = getContentPane();
    contentPane.add(p, BorderLayout.CENTER);
    contentPane.add(buttonpanel, BorderLayout.SOUTH);
  }

  public void actionPerformed(ActionEvent e){
    String name = "";

    for (int i = 0 ; i < radio.length; i++){
      if (radio[i].isSelected()){
        name = radio[i].getText();
      }
    }

    JLabel msg = new JLabel(name);
    JOptionPane.showMessageDialog(this, msg);
  }
}