How do I create the following GUI in Java swing?

I want to create the following GUI with Java swing

Since I don't have enough experience with Java swing, I'm not sure how to accurately recreate the GUI

I tried using GridLayout, which looks like this:

I've tried other layoutmanagers, but due to my inexperience, I can't get anything similar to the GUI I want to implement

I may have to use gridbaglayout, but I've tried it and can't do anything at all I'm not sure how to use gridbaglayout, especially because there are differences in the number of columbs required (2, 2 and 3)

Here is the code to create the second GUI:

import java.awt.*;
import javax.swing.*;

public class GUITest extends JFrame {

public GUItest() {
    super("Testing Title");
    Container pane = getContentPane();

    pane.setLayout(new GridLayout(3,1));

    pane.add(getHeader());
    pane.add(getTextArea());
    pane.add(getButtonPanel());

}

public JComponent getHeader() {
    JPanel labelPanel = new JPanel();
    labelPanel.setLayout(new GridLayout(1,2));
    labelPanel.setSize(getPreferredSize());

    JLabel labelLocal = new JLabel("Left value: ",JLabel.CENTER);
    JLabel labelDB = new JLabel("Right value: ",JLabel.CENTER);

    labelPanel.add(labelLocal);
    labelPanel.add(labelDB);

    return labelPanel;
}

public JComponent getTextArea() {
    JPanel textPanel = new JPanel();
    textPanel.setLayout(new GridLayout(1,2,5,0));

    JTextArea testTextArea = new JTextArea();
    testTextArea.setEditable(false);
    JScrollPane sp1 = new JScrollPane(testTextArea); 

    JTextArea testTextArea2 = new JTextArea();
    JScrollPane sp2 = new JScrollPane(testTextArea2); 
    testTextArea2.setEditable(false);

    testTextArea.setText("Hello Hello Hello\nTesting!\ntesterino\ntesteroni");
    testTextArea2.setText("Hello Hello Hello\nTesting!\ntest\nABC123\ncdef123\nhijk123");

    textPanel.add(sp1);
    textPanel.add(sp2);
    return textPanel;
}

public JComponent getButtonPanel() {
    JPanel inner = new JPanel();
    inner.setLayout(new FlowLayout((FlowLayout.CENTER),100));
    inner.add(new JButton("Do something"));
    inner.add(new JButton("Do something different"));
    inner.add(new JButton("Do something even more different"));
    return inner;
}

public static void main(String[] args) {
    GUITest e = new GUItest();
    e.setSize(700,500);
    e.setVisible(true);
    e.setResizable(false);
    e.setDefaultCloSEOperation(EXIT_ON_CLOSE);
    e.setLocationRelativeTo(null);
}
}

I appreciate any support!

Solution

This is your code with only a few small changes:)

import java.awt.*;  
     import javax.swing.*;  

     public class GUITest extends JFrame {

         public GUItest() {

              super("Testing Title");  
              Container pane = getContentPane();  
              pane.setLayout(new BorderLayout());//Modified Layout to BorderLayout  
              pane.add(getHeader(),BorderLayout.NORTH); //BorderLayout.NORTH
              pane.add(getTextArea(),BorderLayout.CENTER);//BorderLayout.CENTER
              pane.add(getButtonPanel(),BorderLayout.soUTH);//BorderLayout.soUTH

        }  

         public JComponent getHeader() {  

             JPanel labelPanel = new JPanel();  
             labelPanel.setLayout(new GridLayout(1,2));  
             labelPanel.setSize(getPreferredSize());    
             JLabel labelLocal = new JLabel("Left value: ",JLabel.CENTER);  
             JLabel labelDB = new JLabel("Right value: ",JLabel.CENTER);  
             labelPanel.add(labelLocal);
             labelPanel.add(labelDB);
             return labelPanel;

         }

     public JComponent getTextArea() {  

           JPanel textPanel = new JPanel();    
           textPanel.setLayout(new GridLayout(1,0));
           JTextArea testTextArea = new JTextArea();
           testTextArea.setEditable(false);
           JScrollPane sp1 = new JScrollPane(testTextArea); 
           JTextArea testTextArea2 = new JTextArea();
           JScrollPane sp2 = new JScrollPane(testTextArea2); 
           testTextArea2.setEditable(false);
           testTextArea.setText("Hello Hello Hello\nTesting!\ntesterino\ntesteroni");
           testTextArea2.setText("Hello Hello Hello\nTesting!\ntest\nABC123\ncdef123\nhijk123");
           textPanel.add(sp1);
           textPanel.add(sp2);
           return textPanel;
   }

     public JComponent getButtonPanel() {

          JPanel inner = new JPanel();
          inner.setLayout(new FlowLayout());//Modified to standard FlowLayout  
          inner.add(new JButton("Do something"));  
          inner.add(new JButton("Do something different"));  
          inner.add(new JButton("Do something even more different"));  
          return inner;  

     }

     public static void main(String[] args) {  

          GUITest e = new GUItest();  
          e.pack(); //Modified setSize(700,500) to pack()  
          e.setVisible(true);  
          e.setResizable(false);  
          e.setDefaultCloSEOperation(EXIT_ON_CLOSE);  
          e.setLocationRelativeTo(null);  
     }  
}