servlet context listener problem

hi

package sl314.web;

import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.ServletContext;
//support classes
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.BufferedReader;

//model classes
import model.League;
import java.util.List;
import java.util.LinkedList;

/**
 * Web application lifecycle listener.
 * @author Sanjeev
 */
public class InitializeLeagues implements ServletContextListener {

public void contextInitialized(ServletContextEvent event) {
        ServletContext context =event.getServletContext();
        List leagueList=new LinkedList();
        String leaguesFile=context.getInitParameter("leagues-file");
        InputStream is=null;
        BufferedReader reader=null;
        try{
            is=context.getResourceAsStream(leaguesFile);
            reader=new BufferedReader(new InputStreamReader(is));
            String record;

//read every record (one per line)
            while((record= reader.readLine())!=null){
                String[] fields =record.split("\t");
                int year=Integer.parseInt(fields[0]);
                String season=fields[1];
                String title=fields[2];
                League item=new League(year, season, title);
                leagueList.add(item);
            }
            context.setAttribute("leagueList", leagueList);
            context.log("The league list has been loaded.");
        }catch(Exception e){
            context.log("Exception occured while processing the leagues file.",e);
        }finally{
            if(is!=null){
                try{
                    is.close();
                }catch(Exception e){}
            }
            if(reader!=null){
                try{
                    reader.close();
                }catch(Exception e){}
            }
        }
    }

public void contextDestroyed(ServletContextEvent sce) {
        throw new UnsupportedOperationException("Not supported yet.");
    }
}
_______________________________________________________________________________________________________________________________

protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        /*
        response.setContentType("text/html;charset=UTF-8");
        
        PrintWriter out = response.getWriter();
        try {
            leagueList=new LinkedList();
            leagueList.add(new League(2003,"Spring","Soccer League(Spring '03)"));
            leagueList.add(new League(2003,"Summer","Summer Soccer Fest 2003"));
            leagueList.add(new League(2003,"Fall","Fall Soccer League (2003)"));
            leagueList.add(new League(2004,"Spring","Soccer League (Spring '04)"));
            leagueList.add(new League(2004,"Summer","The Summer of Soccer Love 2004"));
            leagueList.add(new League(2004,"Fall","Fall Soccer League (2004)"));

//set page title
            String pageTitle="Duke's Soccer League: List Leagues";

out.println("<html>");
            out.println("<head>");
            out.println("<title>"+pageTitle+"</title>");
            out.println("</head>");
            out.println("<body bgcolor='white'>");
            out.println("<!- Page Heading -->");
            out.println("<table border='1' cellpadding='5' cellspacing='0' width='400'>");
            out.println("<tr bgcolor='#CCCCFF' align='center' valign='center' height='20'>");
            out.println("<td><h3>"+pageTitle+"</h3></td>");
            out.println("</tr>");
            out.println("</table>");

// generate main body

out.println("<p>");
            out.println("The set of soccer leagues are:");
            out.println("</p>");

out.println("<ul>");
            Iterator items=leagueList.iterator();
            while(items.hasNext()){
               League league=(League) items.next();
                out.println("<li>"+league.getTitle()+"</li>");
            }
            out.println("</ul>");
            out.println("</body>");
            out.println("</html>");

} finally {
            out.close();
        }
*/

String pageTitle="Duke's Soccer League: List Leagues.";
        ServletContext context=getServletContext();
        List leagueList=(List)context.getAttribute("leagueList");
        response.setContentType("text/html");
        PrintWriter out=response.getWriter();

//generate the html response

out.println("<html>");
        out.println("<p>");
        out.println("The set of soccer leagues are:");
       out.println("</p>");

out.println("<ul>");
            Iterator items=leagueList.iterator();
            while(items.hasNext()){
               League league=(League) items.next();
                out.println("<li>"+league.getTitle()+"</li>");
            }
            out.println("</ul>");
            out.println("</body>");
            out.println("</html>");
 
    }

_______________________________________________________________________________________________
i am trying to read content from a text file
but it is giving this error

java.lang.NullPointerException
at Check.check.doPost(check.java:92)

content of leagues.txt file is

1 sandeep summer

hi,
Check your Check.java...if possible then paste it here also

Thanks

You are trying to use an object that has not been initialized with any reference, please check that.

Deepakkumar Devarajan wrote:You are trying to use an object that has not been initialized with any reference, please check that.

thank you for your help
i have sorted this problem
String[] fields =record.split("\t");

used " " instead of "\t" and it worked

sandeep pant wrote:
i have sorted this problem
String[] fields =record.split("\t");

used " " instead of "\t" and it worked

Thanks for information.