Member Avatar for game06

i want to use JavaFunctions.java into login.jsp file. my plan is to store all my java functions in one file and i can use them later. ex check for string or number etc functions...

first my folder tree.

webside_01
    >.settings
    >build
    >src
         >newServlet
              JavaFunctions.java
              website_01_Servlet.java
    >WebContent
        >META-INF
        >WEB-INF
        index.jsp
        login.jsp

JavaFunctions.java

public class JavaFunctions {
    /*** test to see if its a number ***/
    public static boolean isNumber(String str){
        try{
            int num = Integer.parseInt(str);
        }
        catch(NumberFormatException e){
            return false;
        }
        return true;
    }/*** End of isnumber Method***/
}

Know in this login.jsp file i want to use 'isNumber()' method. but iam getting error on:
<%@ include file="JavaFunctions.java" %>

login.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
 <%@ include file="JavaFunctions.java" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head></head>
<body>

    .....
</body>
....
  • 2 Contributors
  • 1 Reply
  • 305 Views
  • 12 Hours Discussion Span
  • Latest Post Latest Post by stultuske
Member Avatar for stultuske

not .. learn how to use servlets, and write your code as such that your jsp files communicate with those servlets.
I can recommend the "Head First Servlets & Jsp - 2nd edition"

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.