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package TIJ4_code.gui;

//: gui/ButtonGroups.java

// Uses reflection to create groups

// of different types of AbstractButton.

import javax.swing.*;

import javax.swing.border.*;

import java.awt.*;

import java.lang.reflect.*;

import static TIJ4_code.net.mindview.util.SwingConsole.*;

public class ButtonGroups extends JFrame {

private static String[] ids = {

"June", "Ward", "Beaver", "Wally", "Eddie", "Lumpy"

};

static JPanel makeBPanel(

Class<? extends AbstractButton> kind, String[] ids) {

ButtonGroup bg = new ButtonGroup();

JPanel jp = new JPanel();

String title = kind.getName();

title = title.substring(title.lastIndexOf('.') + 1);

jp.setBorder(new TitledBorder(title));

for(String id : ids) {

AbstractButton ab = new JButton("failed");

try {

// Get the dynamic constructor method

// that takes a String argument:

Constructor ctor =

kind.getConstructor(String.class);

// Create a new object:

ab = (AbstractButton)ctor.newInstance(id);

} catch(Exception ex) {

System.err.println("can't create " + kind);

}

bg.add(ab);

jp.add(ab);

}

return jp;

}

public ButtonGroups() {

setLayout(new FlowLayout());

add(makeBPanel(JButton.class, ids));

add(makeBPanel(JToggleButton.class, ids));

add(makeBPanel(JCheckBox.class, ids));

add(makeBPanel(JRadioButton.class, ids));

}

public static void main(String[] args) {

run(new ButtonGroups(), 500, 350);

}

} ///:~