src/org/tiefaces/components/websheet/utility/CellStyleUtility.java
public static int calcTotalWidth(final Sheet sheet1, final int firstCol,
			final int lastCol, final int additionalWidth) {

		int totalWidth = additionalWidth;
		for (int i = firstCol; i <= lastCol; i++) {
			totalWidth += sheet1.getColumnWidth(i);
		}
		return totalWidth;
	}
public static int calcTotalWidth(final Sheet sheet1, final int firstCol,
			final int lastCol, final int additionalWidth) {

		int totalWidth = additionalWidth;
		for (int i = firstCol; i <= lastCol; i++) {
			totalWidth += sheet1.getColumnWidth(i);
		}
		return totalWidth;
	}
e.g. lineNumberColumnWidth and addRowColumnWidth