java用jxl包操作Excle

===========以下是java操作代码======

package com.myclover.utils.file;  
  
import jxl.format.Alignment;  
import jxl.format.Border;  
import jxl.format.BorderLineStyle;  
import jxl.format.Colour;  
import jxl.format.VerticalAlignment;  
import jxl.write.WritableCellFormat;  
import jxl.write.WritableFont;  
  
public class ExcelStyleUtils {  
  
    /** 
     * 功能描述：创建Excel文档标题字体对象 
     * 修改日期：2011-04-28 
     * @author myclover 
     * @param size  字体大小 
     * @return 
     * @throws Exception 
     */  
    public static WritableFont titleFont(int size) throws Exception{  
        WritableFont titleFont = new WritableFont(WritableFont.TAHOMA);  
        titleFont.setBoldStyle(WritableFont.BOLD);  
        titleFont.setColour(Colour.BLACK);  
        titleFont.setPointSize(size);  
        return titleFont;  
    }  

      
    /** 
     * 功能描述：创建Excel文档内容字体对象 
     * 修改日期：2011-04-28 
     * @author myclover 
     * @param size  字体大小 
     * @return 
     * @throws Exception 
     */  
    public static WritableFont contentFont(int size) throws Exception{  
        WritableFont titleFont = new WritableFont(WritableFont.TAHOMA);  
        titleFont.setColour(Colour.BLACK);  
        titleFont.setPointSize(size);  
        return titleFont;  
    }  
      
    /** 
     * 功能描述：创建Excel文档标题单元格样式 
     * 修改日期：2011-04-28 
     * @author myclover 
     * @param align  对齐方式 
     * @param border 是否有边框 
     * @param size   字体大小 
     * @return 
     * @throws Exception 
     */  
    public static WritableCellFormat titleCellFormat(Alignment align, boolean border, int size) throws Exception{  
        WritableCellFormat titleFormat = new WritableCellFormat();  
        titleFormat.setAlignment(null == align?Alignment.CENTRE:align);  
        titleFormat.setVerticalAlignment(VerticalAlignment.CENTRE);