Author Archives: Stanislav_Panteleev

📜 Why Is It NOT necessary to configure standard JSP tags (like JSTL) in web.xml? ✅ Because modern JSP engines (starting from Servlet 2.4 / JSP 2.0 and later)support automatic tag library discovery based on: URI declarations in the JSP … Continue reading →

In HTML, a line break is created with the <br> tag. ✅ In a JSP page, you just write normal HTML for line breaks, because JSP ultimately outputs HTML to the browser. Example inside JSP: ✅ This will render: 🛠️ … Continue reading →

I’ll show you how to: Write a Java class for the tag Configure a TLD file (Tag Library Descriptor) Use your custom tag inside a JSP page Pass a parameter (attribute) to the tag 🎯 Goal: We will create a … Continue reading →

Custom JSP tags allow you to create your own new JSP tag (like <my:hello /> or <my:showDate />) that encapsulates Java logic cleanly,instead of mixing Java code (<% %>) directly into your JSP pages. ✅ It helps you extend JSP … Continue reading →

In JSP, basic functionality (HTML + embedded Java) is sometimes not enough.You often want to add new behaviors cleanly — without putting Java code into JSPs. Here are the main ways to extend JSP functionality: 🔵 1. Custom Tags ✅ … Continue reading →

📜 The Three Ways to Include Content in JSP Feature <%@ include %> <jsp:include> <c:import> Type Static include Dynamic include Dynamic import (even external URLs) When it happens Translation time (before JSP becomes a servlet) Request time (when user accesses … Continue reading →

Although both <c:set> and <jsp:useBean> create or work with variables/objects in JSP,they have very different purposes and work at different levels. 🔵 1. <jsp:useBean> Feature Explanation Purpose To create or locate a JavaBean (Java class instance) Scope Page, request, session, … Continue reading →

The JSTL library is divided into five main groups (also called tag libraries),each designed for a specific type of functionality. Tag Group Purpose Prefix Example Core Tags Basic control flow, iteration, variables, URL management <c:…> Formatting Tags Formatting text, dates, … Continue reading →

JSTL stands for JavaServer Pages Standard Tag Library. ✅ It’s a collection of ready-to-use, standardized custom tags for common tasks you often need in JSP, like: Iterating over collections Making decisions (if/else) Formatting text and numbers Accessing databases Handling XML … Continue reading →

In JSP EL, you can’t directly call methods like request.getMethod() because EL is designed mainly for accessing attributes and properties, not for executing complex logic. ✅ However, you can still access the HTTP method indirectly using request scope attributes. 🔥 … Continue reading →