public class CanvasExample extends Applet
{
   public void init() {
    this.add(new RedOval());
  }

  public Dimension getMinimumSize() {
    return new Dimension(50, 100);
  }

  public Dimension getPreferredSize() {
    return new Dimension(150, 300);
  }

  public Dimension getMaximumSize() {
    return new Dimension(200, 400);
  }
}

class RedOval extends Canvas
{

  public void paint(Graphics g) {

    Dimension d = this.getSize();
    g.setColor(Color.red); 
    g.fillOval(0, 0, d.width, d.height);

  }
}

Java awt Canvas image is not getting visible with Mac FireFox 24 and above version. The same Canvas image is displaying properly with Windows FireFox 24 and above. Please let us know, is there any extra steps needed to make this working or is this an issue with Mac FireFox ? <pre><nowiki>public class CanvasExample extends Applet { public void init() { this.add(new RedOval()); } public Dimension getMinimumSize() { return new Dimension(50, 100); } public Dimension getPreferredSize() { return new Dimension(150, 300); } public Dimension getMaximumSize() { return new Dimension(200, 400); } } class RedOval extends Canvas { public void paint(Graphics g) { Dimension d = this.getSize(); g.setColor(Color.red); g.fillOval(0, 0, d.width, d.height); } }</nowiki></pre>