Upgrading Java Applications from JDK 1.8 to JDK 21 with Spring Boot 3
This guide documents key technical adjustments required when modernizing a legacy Java application—from JDK 1.8 and Spring Boot 2.x to JDK 21 and Spring Boot 3.2+. The migration involves breaking API changes, dependency updates, and configuration refactoring across multiple layers: servlet stack, security, persistence, serialization, and toolin ...
Posted on Mon, 17 Aug 2026 16:51:34 +0000 by jamcoupe
Understanding Servlet Lifecycle in Java Web Applications
Servlet Lifecycle Overview
In this article, we will explore the complete lifecycle of a Servlet object in Java web applications. Understanding how Servlets are created, executed, and destroyed is fundamental to building robust web applications.
What is Servlet Lifecycle?
The Servlet lifecycle refers to the complete journey of a Servlet object f ...
Posted on Tue, 11 Aug 2026 16:41:17 +0000 by moiseszaragoza