Fix the “Login Pool Is Empty and Connection Creation Failed” error with 5 proven solutions for HikariCP, Spring Boot, MySQL, PostgreSQL, JDBC, and database connection pools.

Spring AI 2.0 advances the Java framework for generative AI apps with a Spring Boot 4 baseline, cleaner agentic tooling, Model Context Protocol support and vendor-backed integrations including Azure ...

Audit logging is a crucial part of enterprise applications. Whether you’re building a banking platform, an insurance portal, or an e-commerce API, you must track who did what and when. In this guide, ...

When we unit test Spring MVC applications, we test each layer separately from the others. We create mock implementations, typically using Mockito, for each layer’s dependencies, then we simulate the ...

The Student Management API allows administrators to create, read, update, and delete student data records. It's designed as a learning project to understand the fundamentals of building REST APIs with ...

This project, named "University Event Management," is a powerful Spring Boot application designed to streamline the organization and coordination of university events and student information. This ...

You’ll also get started with JPA Query Language (JPQL) and use it to execute a few simple database operations on the example application. The complete source code for the example application can be ...