Hii friends I m new to the Servlet world. I am going through the Head First Servlet book and facing difficulty in Chapter 3 while making the Beer Expert web app.
I need to compile the model class -
package com.example.model;
import java.util.*;
public class BeerExpert{
public List getBrands(String color){
List brands=new ArrayList();
if(color.equals("amber")){
brands.add("Jack Amber");
brands.add("Red Moose");
}
else{
brands.add("Jail Pale Ale");
brands.add("Gout Stout");
}
return(brands);
}
}
When I compile the above class on Windows the command prompt says -
"Note: src\com\example\model\BeerExpert.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details."
However the class is compiled. After that the book says me to compile Servlet version 2 -
package com.example.web;
import com.example.model.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class BeerSelect extends HttpServlet{
public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException{
String c=request.getParameter("color");
BeerExpert be=new BeerExpert();
List result=be.getBrands(c);
response.setContentType("text/html");
PrintWriter out=response.getWriter();
out.println("Beer Selection Advice<br>");
Iterator it=result.iterator();
while(it.hasNext()){
out.println("<br>try: " +it.next());
}
}
}
When I compile the Servlet Vertion two the command prompt gives three errors-
src\com\example\web\BeerSelect.java:3: package com.example.model does not exist
import com.example.model.*;
^
src\com\example\web\BeerSelect.java:13: cannot find symbol
symbol : class BeerExpert
location: class com.example.web.BeerSelect
BeerExpert be=new BeerExpert();
^
src\com\example\web\BeerSelect.java:13: cannot find symbol
symbol : class BeerExpert
location: class com.example.web.BeerSelect
BeerExpert be=new BeerExpert();
^
3 errors
Please help me out