How to resize the components in a JFrame when the JFrame Resizes?

Question

Hi all,
i have some problems with my app. I have set the JFrame resizable and that works fine for the JFrame but not for the components in the JFrame.
So my question is how can i set the components in a JFrame to resize automatically when the JFrame resizes?
Here are the important things from my code,...if you need more, just let me know, its my first post in a forum .
Its a JFrame with a JTabbedPane and on the Tabs are Panels with buttons and Tables.
Thank you in advance!
public class MainMonitor extends JFrame {
public MainMonitor() {
          super();
          initialize();
          setVisible(true);
     private void initialize() {
          this.setSize(1145, 785);
          this.setIconImage(Toolkit.getDefaultToolkit().getImage("Images/c.gif"));
          this.setContentPane(getJContentPane());
          this.setTitle("Company Manager");
          this.setResizable(true);
          this.setLocationRelativeTo(null);
     private JPanel getJContentPane() {
          if (jContentPane == null) {
               jContentPane = new JPanel();
               jContentPane.setLayout(null);
               jContentPane.setOpaque(true);
               jContentPane.add(getJTabbedPane(), null);
               jContentPane.add(getJPanel11(), null);
          return jContentPane;
     private JTabbedPane getJTabbedPane() {
          if (jTabbedPane == null) {
               jTabbedPane = new JTabbedPane();
               jTabbedPane.setLocation(new Point(6, 69));
               jTabbedPane.setSize(new Dimension(1120, 684));
               jTabbedPane.addTab("P", null, getJPanel(), null);
               jTabbedPane.addTab("K", null, getJPanel1(), null);
               jTabbedPane.addTab("B", null, getJPanel2(), null);
          return jTabbedPane;
     

Answer 1

Giasaste wrote:
Thanks a lot, i didnt knew that the Layout Manager is a must.It's not a must, but it is the way to allow your app to be resized nicely and makes it much easier to maintain and enhance your program. Imagine creating a complex gui then later decide that you want another radiobutton and to remove a jlabel / jtextfield pair. with layout managers a chore becomes easy.