/**
     * The value of the Scrollbar.
     * value should be either greater than <code>minimum</code>
     * or less that <code>maximum</code>
     *
     * @serial
     * @see getValue()
     * @see setValue()
     */
    int value;

The section above should read:
     * value must be greater than or equal to <code>minimum</code>
     * and less than or equal to
     * <code>maximum</code> - <code>visibleAmount</code>



    /**
     * The minimum value of the Scrollbar.
     * This value must be greater than the <code>minimum</code>
     * value.<br>
     * This integer can be either positive or negative.
     *
     * @serial
     * @see getMinimum()
     * @see setMinimum()
     */
    int minimum;

The section above should read:
     * This value must be less than or equal to
     * <code>maximum</code> - <code>visibleAmount</code>.
     * This integer can be either positive or negative.