// Adapted from Bruce Eckel's "Thinking in Java", 3d Ed, Chapter 14
// Uses reflection to create groups
// of different types of AbstractButton.

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.border.*;
import java.lang.reflect.*;

public class ButtonGroups2 extends JFrame {
    private static String[] ids = {
	"Tripp", "Trapp", "Trull",
    };

    private JPanel makeButtonPanel(Class klass, String[] ids) {
	ButtonGroup group = new ButtonGroup();
	JPanel panel = new JPanel();
	String title = klass.getName();
	panel.setBorder(new TitledBorder(title));
	for (int i = 0; i < ids.length; i++) {
	    AbstractButton button = new JButton("failed");
	    try {
		// Get the dynamic constructor method
		// that takes a String argument:
		Constructor ctor =
		    klass.getConstructor(new Class[] {String.class});
		// Create a new object:
		button = (AbstractButton)
		    ctor.newInstance(new Object[] {ids[i]});
	    }
	    catch (Exception e) {
		System.out.println("Exception caught: " + e);
	    }
	    group.add(button);
	    panel.add(button);
	}
	return panel;
    }

    public ButtonGroups2() {
	super("ButtonGroups2");
	Container cp = getContentPane();
	cp.setLayout(new FlowLayout());
	cp.add(makeButtonPanel(JButton.class, ids));
	cp.add(makeButtonPanel(JToggleButton.class, ids));
	cp.add(makeButtonPanel(JCheckBox.class, ids));
	cp.add(makeButtonPanel(JRadioButton.class, ids));
    }

    public static void main(String[] args) {
        ButtonGroups2 frame = new ButtonGroups2();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(300, 300);
        frame.setVisible(true);
    }
} // class ButtonGroups2