public boolean equals(Object obj) {
        if (obj == this) {
            return true;
        }
        if (!(obj instanceof LookupPaintScale)) {
            return false;
        }
        LookupPaintScale that = (LookupPaintScale) obj;
        if (this.lowerBound != that.lowerBound) {
            return false;
        }
        if (this.upperBound != that.upperBound) {
            return false;
        }
        if (!PaintUtilities.equal(this.defaultPaint, that.defaultPaint)) {
            return false;
        }
        if (!this.lookupTable.equals(that.lookupTable)) {
            return false;
        }
        return true;