Java BasicStroke "Fuzzy"

I'm trying to write a simple paint applet with Java, but I'm having trouble with BasicStroke. Initially, my plan was to try to somehow draw a line with a width, but the API apparently doesn't support that.

I tried using BasicStroke, but the result is just a fuzzy mess. How can I fix开发者_Go百科 this fuzz problem?

private void mousedrag_hook(Point point)
    {
        if(start == null)
            start = point;

            end = point;

            Graphics2D g2d = (Graphics2D)applInstance.buffer_g;
            g2d.setStroke(new BasicStroke(7));

            //g2d.fillOval(point.x - 5, point.y - 5, 10, 10);
            g2d.drawLine(start.x, start.y, end.x, end.y);
            applInstance.repaint();

            start = end;
    }

Don't forget the RenderingHints:

@Override
public void paintComponent(Graphics g) {
    super.paintComponent(g);
    Graphics2D g2d = (Graphics2D) g;
    g2d.setRenderingHint(
        RenderingHints.KEY_ANTIALIASING,
        RenderingHints.VALUE_ANTIALIAS_ON);
    ...
}