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Tutorials of

Build Authentication with Spring Boot 3.5.0, MongoDB, and Angular 20 Learn to build a secure authentication system using Spring Boot 3.5.0, MongoDB, and Angular 20 with JWT, HttpInterceptor, and modern Spring Security setup.

Java Tutorial: Basic Operators Examples Learn Java basic operators with clear examples, including arithmetic, relational, logical, bitwise, and assignment operators. Great for beginners and refreshers

Building a Secure API with Quarkus, PostgreSQL, Kong, and OAuth2 Secure your Quarkus API with PostgreSQL, Keycloak OAuth2, and Kong Gateway using OIDC. Learn to build robust, production-ready microservices.

Java Collections Framework: A Complete Guide with Examples Learn the Java Collections Framework with detailed examples, best practices, and real-world use cases for Lists, Sets, Maps, Queues, and more

Spring Boot Tutorial: Build an MVC Java Web App using Netbeans Build a Java MVC web app with Spring Boot and NetBeans. Learn to create models, controllers, views, and integrate H2 database using Thymeleaf templates

Securing Quarkus Microservices via Kong API Gateway Secure Quarkus microservices with Kong API Gateway using Docker, key-auth, rate limiting, and dynamic API key management for modern microservice security

Integrating JWT Authentication with Spring Boot and React Build a secure full-stack app with Spring Boot and React using JWT authentication. Includes login, registration, roles, token refresh, and styling

Spring Boot 3 and React: Full-Stack CRUD App Tutorial Build a modern full-stack CRUD app using Spring Boot 3, React, and PostgreSQL. Step-by-step guide to connect frontend and backend with REST APIs

Spring Boot Tutorial: Create Java Login Web App using Spring Security and Eclipse A comprehensive step by step Java tutorial on creating Java login web app using Spring Boot, Web MVC, Security, Data, JDBC, Eclipse, and Spring Tools

How to convert Java Object to or from JSON using Jackson 2? Another Java tutorial on how to convert Java Object to or from JSON using Jackson 2 with an example