How to use

revalidate

method

in

org.jfree.ui.DrawablePanel

public void setDrawable(final Drawable drawable)
{
 this.drawable = drawable;
 revalidate();
 repaint();
}

/**
 * Sets the drawable item.
 *
 * @param drawable  the drawable item.
 */
public void setDrawable(final Drawable drawable)
{
 this.drawable = drawable;
 revalidate();
 repaint();
}

/**
 * Sets the drawable item.
 *
 * @param drawable  the drawable item.
 */
public void setDrawable(final Drawable drawable)
{
 this.drawable = drawable;
 revalidate();
 repaint();
}