Member Avatar for neha555

hi,
I m new in JSP can any one help me how to start with jsp.
i just download the tomcat. how i write my first program and run it

Thankx in advance:)

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  • Latest Post Latest Post by jwenting

Dani AI

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asked for a first step into JSP; and pointed toward tutorials and docs, and shared a runnable example (which rightly criticized for using scriptlets). Below is a short, practical path from “I downloaded Tomcat” to a maintainable first JSP, plus a minimal JSP that uses Expression Language instead of embedding Java.

Create a small webapp (IDE Dynamic Web Project or a Maven WAR). Put JSPs under the web application root (for Maven: src/main/webapp). Keep Java code in servlets or classes under src/main/java and let JSPs be the view only. A minimal JSP that is safe to start with:

<%@ page contentType="text/html; charset=UTF-8" %>
<!DOCTYPE html>
<html>
  <head><title>Hello JSP</title></head>
  <body>
    <h1>Hello, ${param.name}</h1>
  </body>
</html>

Best practices: avoid scriptlets (no <% ... %>). Use JSTL and EL for conditional/output logic and keep business logic in Servlets or a controller layer (MVC). Learn the Servlet basics first so you understand request/response flow. For real projects, consider a lightweight framework (e.g., Spring MVC) or template engines; they make apps easier to maintain than raw JSPs.

Troubleshooting checklist: if the page returns 404, verify the JSP path inside the deployed webapp; for 500 errors, read the server logs for the exception and stack trace; if changes don’t appear, clear the container work directory or redeploy the WAR. Ensure your Java version matches the servlet container and that files are saved with UTF-8 encoding. This complements the earlier replies by giving a safe, modern starting workflow and practical debugging pointers.

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Member Avatar for jwenting

by reading the tutorials that come with it and the JEE distribution from Sun.

Member Avatar for peter_budo

Apache Tomcat FAQ plus learn from Java EE 5 Tutorial plus there are many good books specialy from O'Reilly

Member Avatar for gorty

it is very simple,

<html>
<body>
<p>&nbsp;</p>
<div align="center">
<center>
<table border="0" cellpadding="0" cellspacing
="0" width="460" bgcolor="#EEFFCA">
<tr>
<td width="100%"><font size="6" color
="#008000">&nbsp;Date Example</font></td>
</tr>
<tr>
<td width="100%"><b>&nbsp;Current Date 
and time is:&nbsp; <font color="#FF0000">
<%= new java.util.Date() %>
</font></b></td>
</tr>
</table>
</center>
</div>
</body>

save this file with jsp extension and run it in browser,prior to that u have start tomcat server like clicking tomcatfolder/bin/strartup.bat

Member Avatar for jwenting

that's one bad JSP. Scriptlets, no proper headers, etc. etc.

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