Data Insertion Into Excel Sheet With Servlet?

I'm trying to insert data into an excel sheet with the below Servlet.

/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/

import java.beans.Statement;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;

[Code] ....

But it is giving me the below Exception and stacktrace

java.text.ParseException: Unparseable date: "2-Apr"
at java.text.DateFormat.parse(DateFormat.java:357)
at Serv1.doPost(Serv1.java:53)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:644)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)

[Code] ....

i found that the problem is within the date field(, if the problem is with the date, how i can fix it and where am i going wrong.