Creating a class that extends Jlabel to draw a string to a panel. Nothing is currently being displayed

Question

I am new to the swing and graphics and am trying to get this to work for drawing a string on a label by making an object class called DrawString. A panel currently pops up with nothing on it. I would like to thank you for any guidance you can give.

   package view;

    import javax.swing.JFrame;
    import javax.swing.JPanel;

    public class Run {

    public static void main(String[] args) {


        JPanel panel = new JPanel();
        DrawString text = new DrawString();

        JFrame window = new JFrame();
        window.setVisible(true);
        window.setSize(400, 400);
        window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        text.display("Boo");
        panel.setLocation(((window.getWidth()/2)-(panel.getWidth()/2)), 
        ((window.getHeight()/2)-(panel.getHeight()/2)));
        panel.setSize(200, 200);
        window.add(panel);
        panel.add(text);



    }

}



   package view;

import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;

import javax.swing.JLabel;

@SuppressWarnings("serial")
public class DrawString extends JLabel{

    String string;
    Font font = new Font("TimesRoman",Font.PLAIN, 30);

    public DrawString() {
        super();


    }
    public void display(String string){
        this.string=string;
        repaint();
    }
    public void drawString(Graphics comp){
        super.paintComponent(comp);
        Graphics2D g = (Graphics2D) comp;
        g.setFont(font);
        g.drawString(string, JLabel.CENTER, JLabel.CENTER);
    }


}

Is the JLabel ever use your `string` variable at all when rendering? — SamTebbs33, Oct 18 '14 at 23:21
no i added a button and action listener to to try to repaint it at one point but it had no effect — drhunn, Oct 18 '14 at 23:23
You don't need to extend `JLabel`; just invoke the label's `setText()` method. — trashgod, Oct 18 '14 at 23:35
Amen to what @trashgod just posted. Why are you making things more difficult than they need to be? — Hovercraft Full Of Eels, Oct 18 '14 at 23:36
I am learning and experimenting that is all. I am trying to learn what works and what doesn't and why. — drhunn, Oct 18 '14 at 23:41

score 2 · Accepted Answer · edited May 23 '17 at 12:27

2

I am learning and experimenting…

It's not clear if you want to experiment with JLabel or custom painting. You might want to start with a working JLabel#setText() example or TextLayout#draw() example.

edited May 23 '17 at 12:27

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answered Oct 19 '14 at 00:17

trashgod

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Creating a class that extends Jlabel to draw a string to a panel. Nothing is currently being displayed

1 Answers1