package myFileUpload;import java.util.Enumeration;import javax.servlet.http.HttpServletRequest;import javax.servlet.ServletRequest;import com.oreilly.servlet.MultipartRequest;import com.oreilly.servlet.multipart.DefaultFileRenamePolicy;public class UploadBean {       private String webTempPath;    private HttpServletRequest req;    private String dir;    public UploadBean() {}  public void setDir(String dirName) {      if (dirName == null || dirName.equals(""))        throw new IllegalArgumentException(           "invalid value passed to " + getClass().getName()+".setDir");      webTempPath = dirName;  }  public void setReq(ServletRequest request) {      if (request != null && request instanceof HttpServletRequest){          req = (HttpServletRequest) request;      } else {            throw new IllegalArgumentException(            "Invalid value passed to " + getClass().getName()+".setReq");      }}      public String getUploadedFiles() throws java.io.IOException{         //file limit size of five megabytes      MultipartRequest mpr = new MultipartRequest(req,webTempPath,5 * 1024 * 1024);//,new MyFileRenamePolicy());      Enumeration fileenum = mpr.getFileNames();      StringBuffer buff = new StringBuffer("");              for (int i = 1; fileenum.hasMoreElements();i++){            buff.append("The name of uploaded file ").append(i).              append(" is: ").                append(mpr.getFilesystemName((String)fileenum.nextElement())).                  append("<br><br>");      }//for              //return the String      return buff.toString();  } // getUploadedFiles}