GridBagLayout I'm having a real hard time...

Question

hello, here is my code, right now i'm only adding two components, because i want to make sure they look okay...unfortunately, my JPanel is taking up a huge amount of sapce, so that I can't even see it at all when I resize to the fullest....here is my code, i hope someone till help me!
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.util.*;
import java.util.List;
public class MemoryGui extends JFrame  {
          private MemoryGame panel;
          private JList dataList;
public MemoryGui(String t){
     super(t);
     Container contentPane;
     contentPane = getContentPane();
     GridBagLayout layout = new GridBagLayout();
    GridBagConstraints layoutConstraints = new GridBagConstraints();
    getContentPane().setLayout(layout);
     panel = new MemoryGame(t);
            layoutConstraints.gridx = 0; layoutConstraints.gridy = 0;
          layoutConstraints.gridwidth = 1; layoutConstraints.gridheight = 3;
          layoutConstraints.fill = GridBagConstraints.NONE;
          layoutConstraints.insets = new Insets(0, 0, 0, 0);
          layoutConstraints.anchor = GridBagConstraints.NORTHWEST;
          layoutConstraints.weightx = 0; layoutConstraints.weighty = 0;
          layout.setConstraints(panel, layoutConstraints);
     contentPane.add(panel);
     String[] data = {"Timed - (2 min)", "Times - (10 min)", "No Time Limit"};
     dataList = new JList(data);
            layoutConstraints.gridx = 0; layoutConstraints.gridy = 0;
          layoutConstraints.gridwidth = 1; layoutConstraints.gridheight = 1;
          layoutConstraints.fill = GridBagConstraints.NONE;
          layoutConstraints.insets = new Insets(3, 0, 0, 0);
          layoutConstraints.anchor = GridBagConstraints.NORTHWEST;
          layoutConstraints.weightx = 0; layoutConstraints.weighty = 0;
          layout.setConstraints(dataList, layoutConstraints);
     contentPane.add(dataList);
     public static void main(String args[]) {
               JFrame frame = new MemoryGui("Memory Game");
               frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
               frame.setSize(650, 420);
               frame.setVisible(true);
}

Answer 1

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.util.*;
import java.util.List;
public class MemoryGui extends JFrame  {
          private MemoryGame panel;
          private JList dataList;
public MemoryGui(String t){
     super(t);
     Container contentPane;
     contentPane = getContentPane();
     GridBagLayout layout = new GridBagLayout();
    GridBagConstraints layoutConstraints = new GridBagConstraints();
    getContentPane().setLayout(layout);
     panel = new MemoryGame(t);
     panel.setSize(450, 350);
            layoutConstraints.gridx = 0; layoutConstraints.gridy = 0;
          layoutConstraints.gridwidth = 1; layoutConstraints.gridheight = 3;
          //layoutConstraints.fill = GridBagConstraints.NONE;
          //layoutConstraints.insets = new Insets(0, 0, 20, 20);
          layoutConstraints.anchor = GridBagConstraints.CENTER;
          //layoutConstraints.weightx = 0; layoutConstraints.weighty = 0;
          layout.setConstraints(panel, layoutConstraints);
     contentPane.add(panel);
     /*String[] data = {"Timed - (2 min)", "Times - (10 min)", "No Time Limit"};
     dataList = new JList(data);
                layoutConstraints.gridx = 1; layoutConstraints.gridy = 1;
          layoutConstraints.gridwidth = 1; layoutConstraints.gridheight = 1;
          layoutConstraints.fill = GridBagConstraints.NONE;
          layoutConstraints.insets = new Insets(3, 1, 0, 0);
          layoutConstraints.anchor = GridBagConstraints.CENTER;
          layoutConstraints.weightx = 0; layoutConstraints.weighty = 0;
          layout.setConstraints(dataList, layoutConstraints);
     contentPane.add(dataList);*/
     /*style = new JLabel("Style:");
     layoutConstraints.gridx = 1; layoutConstraints.gridy = 0;
     layout.setConstraints(style, layoutConstraints);
     contentPane.add(style);*/
     public static void main(String args[]) {
               JFrame frame = new MemoryGui("Memory Game");
               frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
               frame.setSize(650, 420);
               frame.setVisible(true);
}setSize, does not work...and my Panel, was a lot smaller when i didn't use any Layout Manager, but I have to so that it will be resizable..