Having a hard time converting this. Could someone help?

Modify the Currency Converter application so it uses the MVC architecture. In particular,

Requests should always be sent to controllers, not directly to views.

Servlets do not generate HTML content.

No Java code in JSP, i.e. no JSP expression (<%= %>), JSP scriptlet (<% %>), or JSP declaration (<%! %>).

Current Java Form

import java.io.File;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.io.PrintWriter;

import java.util.HashMap;

import java.util.Map;

import java.util.Scanner;

import javax.servlet.ServletConfig;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

@WebServlet("/CurrencyConverter")

public class CurrencyConverter extends HttpServlet {

private static final long serialVersionUID = 1L;

public CurrencyConverter()

{

super();

}

public void init( ServletConfig config ) throws ServletException

{

super.init( config );

Map data = new HashMap();

try

{

// read file

Scanner in;

in = new Scanner( new File(

getServletContext().getRealPath( "/WEB-INF/rates.txt" ) ) );

while( in.hasNextLine() )

{

String line = in.nextLine();

String tokens[] = line.split( " " );

data.put( tokens[0], Double.valueOf( tokens[1] ) );

}

in.close();

}

catch( FileNotFoundException e )

{

throw new ServletException( e );

}

getServletContext().setAttribute( "data", data );

}

@SuppressWarnings("unchecked")

protected void doGet( HttpServletRequest request,

HttpServletResponse response ) throws ServletException, IOException

{

Map data = (Map) getServletContext()

.getAttribute( "data" );

response.setContentType( "text/html" );

PrintWriter out = response.getWriter();

out.println(

"" );

out.println( "

" );

out.println( "" );

// use the keys to generate list one

out.println( "

" );

for( String c : data.keySet() )

out.println( "" + c + "" );

out.println( "" );

out.println( "= ?" );

// use the keys to generate list one

out.println( "

" );

for( String c : data.keySet() )

out.println( "" + c + "" );

out.println( "" );

out.println( "" );

out.println( "" );

}

@SuppressWarnings("unchecked")

protected void doPost( HttpServletRequest request,

HttpServletResponse response ) throws ServletException, IOException

{

Map data = (Map) getServletContext()

.getAttribute( "data" );

String c1 = request.getParameter( "c1" );

String c2 = request.getParameter( "c2" );

double amount = Double.parseDouble( request.getParameter( "amount" ) );

double result = amount * data.get( c2 ) / data.get( c1 );

response.setContentType( "text/html" );

PrintWriter out = response.getWriter();

out.println(

"" );

out.println(

"

" + amount + " " + c1 + " = " + result + " " + c2 + "

" );

out.println( "

Back

" );

out.println( "" );

}

}