jxl操作excel出错

Question

用jxl.jar操作excel时，用ws.removeColumn(0)时，抛出数组越界的异常，数组明明没越界啊，这是哪里的问题？不知道有人碰过类似的问题没，请多多指教
代码如下：
package com.shuangmeng.ftpinterface;import java.io.*;import jxl.*;import jxl.write.*;
public class tt {
        public void read(){
                jxl.Workbook rw;
                try {
                        rw = jxl.Workbook.getWorkbook(new File("d:\\test\\200505-cfd-5mon.xls"));
                
                //                创建可写入的Excel工作薄对象
                jxl.write.WritableWorkbook wwb;
                
                        wwb = Workbook.createWorkbook(new File("d:\\test\\200cfd-mon.xls"), rw);
                
                //                读取第一张工作表
                jxl.write.WritableSheet ws = wwb.getSheet(1);
                //                获得第一个单元格对象
                jxl.write.WritableCell wc = ws.getWritableCell(0, 2);//                判断单元格的类型, 做出相应的转化
                if(wc.getType() == CellType.LABEL)
                {
                Label l = (Label)wc;
                l.setString("The value has been modified.");
                }
                //ws.removeRow(2);
                ws.removeColumn(0);//                写入Excel对象
                wwb.write();//                关闭可写入的Excel对象
                wwb.close();//                关闭只读的Excel对象
                rw.close();
                } catch (Exception e1) {
                        // TODO 自动生成 catch 块
                        e1.printStackTrace();
                }
        }
        public static void main(String[] args) {
                tt rt= new tt();
                rt.read();
                }}
抛出：
java.lang.ArrayIndexOutOfBoundsException
        at java.lang.System.arraycopy(Native Method)
        at jxl.biff.StringHelper.getUnicodeString(StringHelper.java:175)
        at jxl.biff.formula.StringValue.read(StringValue.java:87)
        at jxl.biff.formula.TokenFormulaParser.parseSubExpression(TokenFormulaParser.java:222)
        at jxl.biff.formula.TokenFormulaParser.parse(TokenFormulaParser.java:107)
        at jxl.biff.formula.FormulaParser.parse(FormulaParser.java:98)
        at jxl.write.biff.ReadFormulaRecord.columnRemoved(ReadFormulaRecord.java:275)
        at jxl.write.biff.WritableWorkbookImpl.columnRemoved(WritableWorkbookImpl.java:1224)
        at jxl.write.biff.WritableSheetImpl.removeColumn(WritableSheetImpl.java:723)
        at com.shuangmeng.ftpinterface.tt.read(tt.java:39)
        at com.shuangmeng.ftpinterface.tt.main(tt.java:56)

Answer 1

读取第一张工作表应该是wwb.getSheet(0);