package org.apache.commons.fileupload does not exist

I have a java file which requires the following class to be imported.

import java.io.*;

import java.net.*;

import java.util.*;

import java.text.*;

import javax.servlet.*;

import javax.servlet.http.*;

import org.apache.commons.fileupload.*;

import org.apache.commons.fileupload.disk.DiskFileItemFactory;

import org.apache.commons.fileupload.servlet.ServletFileUpload

When I complie it using jdk v1.60, I get the following error:

package org.apache.commons.fileupload does not exist

Can anyone tell me which jar files I should place in a suitable location? Thx.

[638 byte] By [roamera] at [2007-11-27 3:54:42]