Republished articles with source attribution. This collection is separate from Diary Coding’s original guides and does not display ads.
In Java, the java.util.concurrent.Executors class provides factory methods for creating and managing thread pools easily. Below are common ways to create a thread pool using Executors: 1. Fixed Thread Pool A fixed thread pool contains a fixed number of threads. This is useful when you have a specific number of tasks to manage and want […]
In Java, the ExecutorService interface is part of the java.util.concurrent package and provides a higher-level replacement for managing threads and tasks. It simplifies the execution of tasks in a multithreaded environment by abstracting thread creation and management. Here’s how you can use ExecutorService to run tasks in Java: 1. Creating an ExecutorService You can create […]
Managing sessions using HttpSession in Jakarta Servlets is a straightforward process. HttpSession is a part of the Jakarta Servlet API which provides a way to handle session management between a client and server during multiple requests. Here’s a structured guide on using and managing sessions with HttpSession: 1. Introduction to HttpSession The HttpSession interface is […]
In a Jakarta EE (or formerly Java EE) web application, you can use the HttpServletRequest object to read request parameters sent by a client (e.g., from a form, URL query string, or other mechanisms). Below are the common ways to read the parameters: 1. Using getParameter(String name) This method is used when you need to […]
Handling GET and POST requests in Jakarta Servlets involves overriding the doGet() and doPost() methods provided by the HttpServlet class. Here’s a step-by-step guide: 1. Import Necessary Packages First, ensure you import the jakarta.servlet and jakarta.servlet.http packages in your servlet class. import jakarta.servlet.ServletException; import jakarta.servlet.annotation.WebServlet; import jakarta.servlet.http.HttpServlet; import jakarta.servlet.http.HttpServletRequest; impor...
In this post I will show you the step-by-step instructions to deploy a WAR file in Tomcat 11: 1. Build Your WAR File A WAR file (.war) is a packaged web application. To build it: If you’re using Maven, run the following command in your project directory: mvn clean package This generates a WAR file […]
Stay curious. There is always something new to learn.
Writer and founder of Diary Coding — sharing notes, tutorials, and experiences about programming for anyone who wants to keep learning.