JavaServer Pages JSP

title: JSP Introduction description: JavaServer Pages ka introduction

HTML mein Java code embed karo. Servlet hi hai internally — JSP compiler Servlet mein convert karta hai.

JSP Elements

1. Scriptlet — Java code

<% String name = request.getParameter("name"); int x = 10; for (int i = 1; i <= 5; i++) { out.println(i + "<br>"); } %>

2. Expression — Value print karna

jsp exampleWoHoTech

<%= "Hello, " + name %>
<%= new java.util.Date() %>
<%= 5 * 10 %>

3. Declaration — Variable/Method declare karna

jsp exampleWoHoTech

<%!
    int count = 0;
    String greet(String name) {
        return "Hello, " + name + "!";
    }
%>

4. Directives

jsp exampleWoHoTech

<%@ page language="java" contentType="text/html; charset=UTF-8" %>
<%@ include file="header.jsp" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

5. Comments

<%-- JSP comment — client ko nahi dikhta --%>

Simple JSP Example

jsp exampleWoHoTech

<%@ page contentType="text/html" %>
<html>
<body>
    <h1>Welcome!</h1>
    <%
        String name = request.getParameter("name");
        if (name != null && !name.isEmpty()) {
    %>
        <p>Hello, <%= name %>!</p>
    <%
        } else {
    %>
        <p>Please enter your name</p>
    <%
        }
    %>
</body>
</html>

Implicit Objects

JSP mein automatically available: request, response, session, application, out, config, pageContext, page, exception

title: JSP Introduction description: JavaServer Pages ka introduction

HTML mein Java code embed karo. Servlet hi hai internally — JSP compiler Servlet mein convert karta hai.

JSP Elements

1. Scriptlet — Java code

<% String name = request.getParameter("name"); int x = 10; for (int i = 1; i <= 5; i++) { out.println(i + "<br>"); } %>

2. Expression — Value print karna

jsp exampleWoHoTech

<%= "Hello, " + name %>
<%= new java.util.Date() %>
<%= 5 * 10 %>

3. Declaration — Variable/Method declare karna

jsp exampleWoHoTech

<%!
    int count = 0;
    String greet(String name) {
        return "Hello, " + name + "!";
    }
%>

4. Directives

jsp exampleWoHoTech

<%@ page language="java" contentType="text/html; charset=UTF-8" %>
<%@ include file="header.jsp" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

5. Comments

<%-- JSP comment — client ko nahi dikhta --%>

Simple JSP Example

jsp exampleWoHoTech

<%@ page contentType="text/html" %>
<html>
<body>
    <h1>Welcome!</h1>
    <%
        String name = request.getParameter("name");
        if (name != null && !name.isEmpty()) {
    %>
        <p>Hello, <%= name %>!</p>
    <%
        } else {
    %>
        <p>Please enter your name</p>
    <%
        }
    %>
</body>
</html>

Implicit Objects

JSP mein automatically available: request, response, session, application, out, config, pageContext, page, exception

JavaServer Pages JSP

JSP Elements

1. Scriptlet — Java code

2. Expression — Value print karna

3. Declaration — Variable/Method declare karna

4. Directives

5. Comments

Simple JSP Example

Implicit Objects

Continue learning this concept

JavaServer Pages JSP

JSP Elements

1. Scriptlet — Java code

2. Expression — Value print karna

3. Declaration — Variable/Method declare karna

4. Directives

5. Comments

Simple JSP Example

Implicit Objects

Continue learning this concept