public boolean equals(Object obj) {if (this == obj) {return true;}if (obj == null) {return false;}if (obj instanceof HSSFCellStyle) {final HSSFCellStyle other = (HSSFCellStyle) obj;if (_format == null) {if (other._format != null) {return false;}} else if (!_format.equals(other._format)) {return false;}if (_index != other._index) {return false;}return true;}return false;}