Hello Java-GUI-Developers,

did anyone ever try to develop a Java GUI conforming with Sun's "Java
Look and Feel Design Guidelines"? I receive the impression this is a
hard job. I tried to implement a layout with two radiobuttons with the
below-mentioned code. Somehow the vertical distance between these two
radiobuttons is 11 pixels, not 5 like I intended. Even if I set the
buttons margins to zero I do not reach a 5 pixels distance.
The same problem with checkboxes.

What do I do wrong? Or did Sun's swinging programmers have something
roomier in mind when constructing the metal look and feel?  ;o)

Greetings
   Dirk

import java.awt.Color;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.WindowConstants;

public class RadioButtonExampleGB extends JPanel {
 JRadioButton startAtTopRadioButton = new JRadioButton();
 JRadioButton wrapAroundRadioButton = new JRadioButton();

 public RadioButtonExampleGB() {
   init();
 }

 public static void main(String[] args) {
   RadioButtonExampleGB radioButtonExampleGB = new
RadioButtonExampleGB();
   JFrame frame = new JFrame("RadioButtonExampleGB");
   frame.getContentPane().add(radioButtonExampleGB);
   frame.pack();
   frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
   frame.setVisible(true);
 }

 private void init() {
   setLayout(new GridBagLayout());
   setBackground(Color.blue);

   startAtTopRadioButton.setText("Match Case");
//    startAtTopRadioButton.setMargin(new Insets(0, 0, 0, 0));
   startAtTopRadioButton.setBackground(Color.green);
   wrapAroundRadioButton.setText("Whole Word");
//    wrapAroundRadioButton.setMargin(new Insets(0, 0, 0, 0));
   wrapAroundRadioButton.setBackground(Color.red);

   GridBagConstraints constraints =
     new GridBagConstraints(0, 0, 1, 1, 0.0, 0.0,
                            GridBagConstraints.NORTHWEST,
                            GridBagConstraints.NONE,
                            new Insets(0, 0, 0, 0), 0, 0);

   add(startAtTopRadioButton, constraints);

   constraints.gridy++;
   add(wrapAroundRadioButton, constraints);
 }
}