put two vertical JSplitPane on a frame java

Question

I am a new java programmer and I use stackoverflow since my begin. I code a little "game", and it is a text-based game. Well, i begin a graphical interface, to case the text, and i would have this configuration

Basically, it is a double separation, with 3 horizontals elements. Actually, I have this:

and i want a separation

I have tried to put an other split pane on the top of the first one, like this:

package sample;

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

class Fenetresaisie extends JFrame {
    public static class Fenetre {
        public final static int HT = 1024;
        public final static int LG = 758;

        public static void main(String[] args) {
            JPanel panel = new JPanel();
            JFrame F = new JFrame("CORONAZE");
            F.setExtendedState(JFrame.MAXIMIZED_BOTH);
            F.setSize(HT, LG);
            F.setVisible(true);

            F.addWindowListener(new gestionFenetre());

            ImageIcon icone = new ImageIcon("images.jpg");

            JLabel image = new JLabel(icone);

            JTextField textField = new JTextField();
            textField.setFont(new Font("Terminal", Font.BOLD, 30));
            textField.setForeground(Color.RED);
            textField.setBackground(Color.black);

            textField.addKeyListener(new java.awt.event.KeyAdapter() {

                public void keyReleased(java.awt.event.KeyEvent e) {
                     textField.getText();
                     e.getKeyChar();
                }
            });

            JLabel label = new JLabel(">texte de l'histoire ici<");
            label.setOpaque(true);
            label.setForeground(Color.green);
            label.setBackground(Color.BLACK);
            panel.add(label);

            JSplitPane topJSplitPane = new JSplitPane( JSplitPane.VERTICAL_SPLIT, label, textField);
          //  topJSplitPane.setDividerLocation(400);


            JSplitPane bottomJSplitPane = new JSplitPane( JSplitPane.VERTICAL_SPLIT, topJSplitPane, textField );
            //i added it to have a double separation, but it give 2 sticked splitpane
            F.add(topJSplitPane, BorderLayout.CENTER);
            F.add(bottomJSplitPane, BorderLayout.SOUTH);
            F.setVisible(true);
        }
    }

    static class gestionFenetre extends WindowAdapter {
        public void windowClosing(WindowEvent e) {
            System.exit(0);
        }
    }
}

But it gives me two sticked splitpane :-/

Can you help me please? I hope you understand my message, because I learn English. Contact me below if you want a next phase to this issue, thanks! ^^ Here is the actual graphical test java class:

package sample;

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


class Fenetresaisie extends JFrame {

    public static class Fenetre {
        public final static int HT = 1024;
        public final static int LG = 758;

        public static void main(String[] args) {
            JPanel panel = new JPanel();
            JFrame F = new JFrame("CORONAZE");
            F.setExtendedState(JFrame.MAXIMIZED_BOTH);
            F.setSize(HT, LG);
            F.setVisible(true);

            F.addWindowListener(new gestionFenetre());

            ImageIcon icone = new ImageIcon("images.jpg");

            JLabel image = new JLabel(icone);

            JTextField textField = new JTextField();
            textField.setFont(new Font("Terminal", Font.BOLD, 30));
            textField.setForeground(Color.RED);
            textField.setBackground(Color.black);

            textField.addKeyListener(new java.awt.event.KeyAdapter() {

                public void keyReleased(java.awt.event.KeyEvent e) {
                     textField.getText();
                     e.getKeyChar();
                }

            });



            JLabel label = new JLabel(">texte de l'histoire ici<");
            label.setOpaque(true);
            label.setForeground(Color.green);
            label.setBackground(Color.BLACK);
            panel.add(label);

            JSplitPane topJSplitPane = new JSplitPane( JSplitPane.VERTICAL_SPLIT, label, textField);
            topJSplitPane.setDividerLocation(400);


           // JSplitPane bottomJSplitPane = new JSplitPane( JSplitPane.VERTICAL_SPLIT, topJSplitPane, textField );
            //i added it to have a double separation, but it give 2 sticked splitpane
            F.add(topJSplitPane, BorderLayout.CENTER);
           // F.add(bottomJSplitPane, BorderLayout.SOUTH);
            F.setVisible(true);
        }
    }

    static class gestionFenetre extends WindowAdapter {
        public void windowClosing(WindowEvent e) {
            System.exit(0);
        }
    }
}

Answer 1

You wrote in your question

I am a new java programmer and I use stackoverflow since my begin

I really think that the way to learn Swing programming is to follow a learning curve that starts with the basics and gradually progresses. Everybody has his preferred way to learn, for example by attending a course or watching a video or reading a book. Personally I prefer books. If you do too, then I can recommend a few.

You also wrote in your question

I code a little "game"

I would say that is a very ambitious project for a beginner. While I'm sure that there are people who learn best by starting off with ambitious projects, I would say they are in the minority.

That said, the key to correctly implementing your GUI is having a deep understanding of how Swing works, in particular layout managers and Component sizes as well as at what point in the code can you set those Component sizes.

The below code will initially display your desired GUI, since I understand, from your question, that that is what you are trying to accomplish now.

import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSplitPane;
import javax.swing.JTextField;
import javax.swing.WindowConstants;

public class WindowCapture extends WindowAdapter implements Runnable {
    private JFrame  frame;
    private JLabel  label;
    private JSplitPane  splitPane;
    private JSplitPane  topPane;

    @Override // java.lang.Runnable
    public void run() {
        showGui();
    }

    @Override // java.awt.event.WindowAdapter
    public void windowOpened(WindowEvent event) {
        int height = event.getWindow().getHeight();
        splitPane.setDividerLocation(0.7);
        double high = height * 0.7;
        height = (int) Math.rint(high);
        high = height * 0.8;
        height = (int) Math.rint(high);
        label.setPreferredSize(new Dimension(event.getWindow().getWidth(), height));
    }

    private JTextField createBottomPane() {
        JTextField textField = new JTextField(20);
        textField.setFont(new Font("Terminal", Font.BOLD, 30));
        textField.setForeground(Color.RED);
        textField.setBackground(Color.black);
        return textField;
    }

    private JSplitPane createSplitPane() {
        splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, createTopPane(), createBottomPane());
        splitPane.setDividerLocation(0.4);
        return splitPane;
    }

    private JSplitPane createTopPane() {
        label = new JLabel(">texte de l'histoire ici<");
        label.setOpaque(true);
        label.setForeground(Color.green);
        label.setBackground(Color.BLACK);
        topPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT,
                                            label,
                                            new JPanel());
        topPane.setDividerLocation(0.9);
        return topPane;
    }

    public void showGui() {
        frame = new JFrame("Window Capture");
        frame.addWindowListener(this);
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        frame.setExtendedState(Frame.MAXIMIZED_BOTH);
        frame.add(createSplitPane());
        frame.setVisible(true);
    }

    /**
     * Start here!
     */
    public static void main(String[] args) {
        EventQueue.invokeLater(new WindowCapture());
    }
}

Here is a screen capture of the running app.