The javadoc should say "to be displayed". The "be" is missing from the
first line.

    /**
     * Sets the image to displayed in the minimized icon for this frame.
     * Not all platforms support the concept of minimizing a window.
     * @param image the icon image to be displayed.
     * If this parameter is <code>null</code> then the
     * icon image is set to the default image, which may vary
     * with platform.
     * @see java.awt.Frame#getIconImage
     */
    public synchronized void setIconImage(Image image) {