Specify and attach coordinates when labeling the swing panel

I'd like to set the label on the panel by coordinate designation in java swing, but I don't know.
I would appreciate it if you could let me know the code as well.

import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.*;

import javax.swing.*;
import javax.swing.border.LineBorder;

public class Layout 5 extensions JFrame {
    JLabel label1;
    JLabel label2;
    JLabel label3;
    JLabel label4;
    JPanel panel1;
    JPanel panel2;
    JPanel panel3;
    CardLayout layout;

    public static void main(String[]args) {
        Layout 5 frame = new Layout 5("Example");
        frame.setVisible(true);
    }

    Layout 5 (String title) {
        setTitle("Example");
        setBounds (100, 100, 250, 300);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        label1 = new JLabel("1");
        panel1 = new JPanel();
        label1.setBorder (new LineBorder (Color.blue, 2, true));
        panel1.setPreferredSize(new Dimension(200,100));
        label1.addMouseListener(newMouseAdapter(){
            @ Override
            public void mouseClicked (MouseEvente) {
                layout.show(getContentPane(), "panel2";
            }
        });
        // Coordinate designation
        Dimensioned=label1.getPreferredSize();
        label1.setBounds(50,100,d.width,d.height);
        panel1.add(label1);

        panel2 = new JPanel();
        label2 = new JLabel("2");
        label2.addMouseListener(newMouseAdapter(){
            @ Override
            public void mouseClicked (MouseEvente) {
                layout.show(getContentPane(), "panel3";
            }
        });
        panel2.add(label2);

        panel3 = new JPanel();
        label3 = new JLabel("3");
        label3.addMouseListener(newMouseAdapter(){
            @ Override
            public void mouseClicked (MouseEvente) {
                layout.show(getContentPane(), "panel1";
            }
        });
        panel3.add(label3);

        label4 = new JLabel("4");
        label4.addMouseListener(newMouseAdapter(){
            @ Override
            public void mouseClicked (MouseEvente) {
                layout.show(getContentPane(), "panel3";
            }
        });
        panel1.add(label4);
        label4.setBorder (new LineBorder (Color.blue, 2, true));

        layout = new CardLayout();

        Container contentPane=getContentPane();
        contentPane.setLayout(layout);

        JScrollPane scrollpane1 = new JScrollPane(panel1);
        scrollpane1.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
        scrollpane1.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLBAR_ALWAYS);

        JScrollPane scrollpane2 = new JScrollPane(panel2);
        scrollpane2.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
        scrollpane2.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLBAR_ALWAYS);

        JScrollPane scrollpane3 = new JScrollPane(panel3);
        scrollpane3.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
        scrollpane3.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLBAR_ALWAYS);
        panel3.setPreferredSize (new Dimension (1000, 1000);

        contentPane.add(scrollpane1, "panel1");
        contentPane.add(scrollpane2, "panel2");
        contentPane.add(scrollpane3, "panel3");
    }

}

java swing

2022-09-30 18:08

1 Answers

You can place null in absolute coordinates by specifying setLayout method in constructor in JPanel.

I don't know which stage of Java I'm tripping at.
I appreciate that I could make the following decision when I answer that you will ask me a question including the code.

Do you know JPanel's Layout Manager
JPanel's setLayout(null) and JLabel's setBound are ready, but they are not displayed because they do not setSize (English similar question).
Do you want flexible layout using JLayeredPane?
Are you not interested in Java and would you like to throw a whole challenge?

It was a rather awkward answer, but even if it doesn't work, I think it would be easier to get a more accurate answer if you included the code or error being created in the questionnaire.
Please consider the questionnaire when you ask similar questions in the future.

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

public class NullLayoutFrame extensions JFrame {
    publicNullLayoutFrame(){
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JPanel panel = new JPanel(null); // constructor without layout manager specified
        // If you want the layout manager to be null in setLayout, remove the above and enable the following two lines.
        // JPanel panel = new JPanel();
        // panel.setLayout(null);

        JLabel label = new JLabel("Absolute bound.");
        Dimensioned=label.getPreferredSize();
        label.setBounds(50,100,d.width,d.height); // Set label by coordinate specification

        panel.add(label);

        getContentPane().add(panel, BorderLayout.CENTER);
    }

    public static void main(String[]args) {
        SwingUtilities.invokeLater(newRunnable(){
            public void run() {
                NullLayoutFrame = new NullLayoutFrame();
                frame.setBounds(10,10,300,200);
                frame.setVisible(true);
            }
        });
    }  
}

2022-09-30 18:08

If you have any answers or tips

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