Thread: Image on a JPanel

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Please post your code correctly.

The code below, which is your code only modified slightly for my environment, works fine. I suspect your image file isn't being found, something simple. Check that the image is being founded and added.

import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.MediaTracker;
import java.awt.Toolkit;
 
import javax.swing.JFrame;
import javax.swing.JPanel;
 
public class TestClass extends JFrame
{
    PannelloConImmagine myPanel;
 
    public TestClass()
    {
        this.setTitle("PROVA");
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE );
 
        myPanel = new PannelloConImmagine();
        this.add(myPanel);
 
        this.setSize(600,600);
        this.setVisible(true);
        pack();
 
    }
 
    public static void main(String[] args)
    {
        new TestClass();
    }
}
 
class PannelloConImmagine extends JPanel
{
    private Image miaImmagine;
 
    public PannelloConImmagine()
    {
        miaImmagine = Toolkit.getDefaultToolkit().getImage("./files/cup.gif");
        MediaTracker tracker = new MediaTracker(this);
        tracker.addImage(miaImmagine, 0);
 
        setPreferredSize( new Dimension( 200, 200 ) );
 
        try {
            tracker.waitForID(0);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
 
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        g.drawImage(miaImmagine, 0,0, this);
    }
}

BTW - my ./files folder is at the same level as my src folder.

The code works fine since i reach the image at the following address "src\\immagine.jpg" and I added this line

	setPreferredSize( new Dimension( 600, 600) );

Thank you Greg!