如何在Java中控制Excel的列宽？请高手一定关注指点啊！

[squirrel_1976]

这是我的源码：

import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class XML2Excel extends HttpServlet {

public void init() throws ServletException {
}

public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("application/vnd.ms-excel; charset=GBK");
PrintWriter out = response.getWriter();

Hashtable hs = XML2Hashtable.convert("D:\\ATML_Q1_2000.xml");
out.println(hs.get("ci:identifiers.entityName_nNC4101") +"综合财务信息\t");
out.println("文档信息");

}

public void destroy() {
}
}

我只是想它产生的Excel不要那么难看，请问大侠们怎样做到控制列宽的？