Issue while using Apache Velocity with servlets

Hello Folks,

I am quiet new with servlets and on top of that i have been trying to implement Apache Velocity for some template rendering. Below is the code i have written to implement velocity. String "ch " stores the value from the UI and prints it on the server logs. I have trying to read the template file KCIJPCFG.vm which is under the "C:" directory and replace the occurance of ${GBL_TARGET_HILEV} in the template file wth "TDITNT.ITM62242". I am able to run the following code when its a simple java code, but i am having issues when trying to implement it as a servlet. Help is appreciated.

The question i have:-

1. when i do System.out.println( writer.toString() ); i dont see any output on the server logs.
2. Does my code looks correct?

Thanks
Adi

import java.io.BufferedReader;
import java.io.IOException;
import java.io.StringWriter;
import java.util.Properties;

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

import org.apache.velocity.Template;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.app.VelocityEngine;
import org.apache.velocity.tools.view.VelocityViewServlet;

/**
 * Servlet implementation class UpdateKCIJPCFG
 */
public class UpdateKCIJPCFG extends VelocityViewServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public UpdateKCIJPCFG() {
        super();
        // TODO Auto-generated constructor stub
    }
 
	
	public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		BufferedReader br = new BufferedReader(request.getReader());
	
              String ch = (String)br.readLine();
              System.out.println("char is " + ch);
              
              VelocityEngine ve = new VelocityEngine();
              Properties props = new Properties();
              props.setProperty("file.resource.loader.path", "C:");
              ve.init(props);
              
              Template t = ve.getTemplate("KCIJPCFG.vm" );
                         
              VelocityContext context = new VelocityContext();
              context.put("GBL_TARGET_HILEV", "TDITNT.ITM62242");
              
              StringWriter writer = new StringWriter();
              t.merge( context, writer );
              
              System.out.println( writer.toString() ); 
          
	}

}

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