Java SE (Java Platform, Standard Edition)

When calling the ImageIcon.paintIcon() method with a significantly scaled down Graphics object I'm observing problems - specifically drawing junk outside the region of the scaled down icon.

I can reproduce this behavior with the following program. You'll need to create your own icon named "mycon.gif" (try something around 100x100 pixels) and keep rotating the mouse wheel til the icon size is vanishingly small.

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

public class Problem extends JFrame {
    
    public Problem(String name) {
        super(name);
        add(new ProblemPanel(), BorderLayout.CENTER);
    }
    
    private static void createGui() {
        Problem p = new Problem("Problem");
        p.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        p.setSize(800, 800);
        p.setVisible(true);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createGui();
            }
        });
    }
}

class ProblemPanel extends JPanel implements MouseWheelListener {
    private static final String ICON = "mycon.gif";
    private static final double FACTOR = 1.1;
    
    private Icon icon;
    private double scale;
    
    public ProblemPanel() {
        this.icon = new ImageIcon(getClass().getResource(ICON));
        this.scale = 1.0;
        addMouseWheelListener(this);
    }
    
    public void mouseWheelMoved(MouseWheelEvent event) {
        if (event.getWheelRotation() < 0) {
            this.scale *= FACTOR;
        }
        else {
            this.scale /= FACTOR;
        }
        repaint();
    }
    
    public void paint(Graphics g) {
        Graphics2D g2d = (Graphics2D) g;
        g2d.setColor(Color.white);
        g2d.fillRect(0, 0, getWidth(), getHeight());
        g2d.scale(this.scale, this.scale);
        this.icon.paintIcon(this, g2d, 100, 100);
    }
}