I had a Java assignment about a month ago, which was about building a GUI. I used GroupLayout to manage the position of the components. I ran into a problem where if I put a very long string of text into a JTextField and resize the outer window, the textfield suddenly "bursts".

I fixed the issue using GridBagLayout, but I wanted to come back to the original problem in hopes of getting a better understanding of GroupLayout.

Here's a SSCCE that demonstrates this problem. (I tried to minimize it as much as I can, I apologize if my example is too long.)

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

public class Main extends JFrame {
    JTextField text1;
    JTextField text2;
    JPanel myPanel;

    public static void main(String[] args) {
        javax.swing.SwingUtilities.invokeLater(() -> new Main());
    }

    public Main() {
        super("Sussy Imposter");

        createComponents();
        setLayout();
        configureSettings();
    }

    public void createComponents() {
        text1 = new JTextField(20);
        text2 = new JTextField(20);
        text1.setMaximumSize(text1.getPreferredSize());
        text2.setMaximumSize(text2.getPreferredSize());

        myPanel = new JPanel();
        myPanel.setBackground(Color.CYAN);
        myPanel.setPreferredSize(new Dimension(100, 100));
    }

    public void setLayout() {
        Container c = getContentPane();
        GroupLayout groupLayout = new GroupLayout(c);
        c.setLayout(groupLayout);

        groupLayout.setAutoCreateGaps(true);
        groupLayout.setAutoCreateContainerGaps(true);
        groupLayout.setHorizontalGroup(
            groupLayout.createSequentialGroup()
            .addComponent(myPanel)
            .addGroup(groupLayout.createParallelGroup(GroupLayout.Alignment.LEADING)
                .addComponent(text1)
                .addComponent(text2))
        );
        groupLayout.setVerticalGroup(
            groupLayout.createParallelGroup()
                .addComponent(myPanel)
                .addGroup(groupLayout.createSequentialGroup()
                    .addComponent(text1)
                    .addComponent(text2))
        );
    }

    public void configureSettings() {
        pack();
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);
        setVisible(true);
    }
}

When I copy-paste this text: Let me send you to space