Java GUI, trying to position radio buttons and check boxes

Question

So I'm trying to create a series of radio buttons and check boxes that are displayed as follows:

          Radio Button
Check Box
          Radio Button
Check Box
          Radio Button

However, I'm still in the learning process for java and I was wondering if anyone could solve this problem. At the moment the buttons and boxes are being displayed in the correct location, however the first radio button ("Times") is not being displayed for some reason. If you could perhaps describe the reason and a possible solution that'd be great.

Thanks

Updated Code:

import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JTextField;

public class Question2 {
    public static void main(String[] args) {
        MyFrame f = new MyFrame("Font Chooser");
        f.init();
    }
}

class MyFrame extends JFrame {
    MyFrame(String title) {
        super(title);
    }

    private JPanel mainPanel;
    private GridBagConstraints gbc = new GridBagConstraints();
    private GridBagLayout gbLayout = new GridBagLayout();

    void init() {
        mainPanel = new JPanel();
        mainPanel.setLayout(gbLayout);
        mainPanel.setBorder(BorderFactory.createEmptyBorder(10, 20, 10, 20));
        this.setContentPane(mainPanel);

        gbc.gridx = 0;
        gbc.gridy = 1;

        JCheckBox cb = new JCheckBox("Bold");
        gbLayout.setConstraints(cb, gbc);
        mainPanel.add(cb);
        gbc.gridy = 3;
        gbLayout.setConstraints(cb, gbc);
        cb = new JCheckBox("Italic");
        mainPanel.add(cb);

        gbc.gridx = 1;
        gbc.gridy = 0;

        JRadioButton rb = new JRadioButton("Times");
        gbLayout.setConstraints(rb, gbc);
        mainPanel.add(rb, gbc);
        gbc.gridy = 2;
        gbLayout.setConstraints(rb, gbc);
        rb = new JRadioButton("Helvatica");
        mainPanel.add(rb, gbc);
        gbc.gridy = 4;
        gbLayout.setConstraints(rb, gbc);
        rb = new JRadioButton("Courier");
        mainPanel.add(rb, gbc);


        this.pack();
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setVisible(true);
    }
}

Answer 1

Here's the problem, you are saying each height is 3 high, but really each cell is 1.

cRadioButton.gridheight = 3; // change this to 1

Here's the full source, and I did make some of the suggested changes from the other answer because at some point you will want to do something different (different action listener implementation for each type of button).

import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JTextField;

public class MyFrame1 extends JFrame {
    MyFrame1(String title) {
        super(title);
    }

    private JPanel mainPanel;
    private GridBagConstraints gbc = new GridBagConstraints();
    private GridBagLayout gbLayout = new GridBagLayout();

    void init() {
        mainPanel = new JPanel();
        mainPanel.setLayout(gbLayout);
        mainPanel.setBorder(BorderFactory.createEmptyBorder(10, 20, 10, 20));
        this.setContentPane(mainPanel);

        gbc.gridx = 0;
        gbc.gridy = 1;
        JCheckBox italic = new JCheckBox("Italic");
        gbLayout.setConstraints(italic, gbc);
        mainPanel.add(italic);

        JCheckBox bold = new JCheckBox("Bold");
        gbc.gridy = 3;
        gbLayout.setConstraints(bold, gbc);
        mainPanel.add(bold);

        gbc.gridx = 1;
        gbc.gridy = 0;
        JRadioButton times = new JRadioButton("Times");
        gbLayout.setConstraints(times, gbc);
        mainPanel.add(times, gbc);

        gbc.gridy = 2;
        JRadioButton helv = new JRadioButton("Helvatica");
        gbLayout.setConstraints(helv, gbc);
        mainPanel.add(helv, gbc);

        gbc.gridy = 4;
        JRadioButton courier = new JRadioButton("Courier");
        gbLayout.setConstraints(courier, gbc);
        mainPanel.add(courier, gbc);


        this.pack();
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setVisible(true);
    }
    public static void main(String[] args) {
        MyFrame1 f = new MyFrame1("Font Chooser");
        f.init();
    }
}

Answer 2

It seems like you keep reassigning the same object, which may be leading to your overlapping. Instead of

JRadioButton rb = new JRadioButton("Times");
//...
newPanel.add(rb);
rb = new JRadioButton("Helvatica");
//...
newPanel.add(rb);
//and so on

try something like

JRadioButton times = new JRadioButton("Times");
JRadioButton helva = new JRadioButton("Helvatica");
//...

newPanel.add(times);
newPanel.add(helva);