How do I read text file in Servlet?

package org.kodejava.example.servlet;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class ReadTextFileServlet extends HttpServlet {
    protected void doGet(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
       
        response.setContentType("text/html");
       
        //
        // We are going to read a file called configuration.properties. This
        // file is placed under the WEB-INF directory.
        //
        String filename = "/WEB-INF/configuration.properties";
       
        ServletContext context = getServletContext();
       
        //
        // First get the file InputStream using ServletContext.getResourceAsStream()
        // method.
        //
        InputStream is = context.getResourceAsStream(filename);
        if (is != null) {
            InputStreamReader isr = new InputStreamReader(is);
            BufferedReader reader = new BufferedReader(isr);
            PrintWriter writer = response.getWriter();
            String text = "";
           
            //
            // We read the file line by line and later will be displayed on the
            // browser page.
            //
            while ((text = reader.readLine()) != null) {
                writer.println(text);
            }
        }
    }

    protected void doPost(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
    }
}

Below is an example of the configuration we are going to read:

 

app.appname=Servlet Examples
app.version=1.0
app.copyright=2007

Source : http://www.kodejava.org