List is one of the most commonly used collections in Java. Some List implementations are LinkedList, ArrayList, and Stack. In this post, I will take you through some of the common operations performed on List. Overview…

A Spring Boot RESTful service is typically divided into three layers:  Repository, Service, and Controller. This layering helps to segregate the RESTful application responsibilities and enabling loose coupling between the objects. When you develop a…

Why Use Caching? When data stored in some database is requested simultaneously from a large user base, the system can get overwhelmed. This happens because for each request the application has to retrieve the data…

Pattern matching and guards, fat JARs, Reactive Hibernate, HTTP clients and Project Reactor, timed leasing for distributed systems, and when to say No!

In this episode, we discuss common pitfalls when mapping associations and I answer a question about customized enum mappings.

Explore three different ways to trigger and stop a scheduled Spring Batch job.

Thymeleaf is a templating language with excellent integration with Spring. This article provides an introduction to using Thymeleaf in a Spring MVC application.

How to to simpler conversions from Entities to DTOs and back in a Spring REST API.

Introduction to the new Spring Boot 2.2 release with feature like: Update to Spring Framework 5.2, performance improvments, JUnit 5 etc.

If you are using a SOAP service, you will need to handle security of request and response. In this post, I show how to add SOAP headers.

Continuing the design discussion of Social KPI application. In this post, I discuss how we will be using Facebook and Instagram APIs.

Learn OOP, SOLID principles with Java examples. Implement backend part for online store by the end of the course

Learn Java Collections Framework from scratch to PRO level with practical exercises

In this post, I show how to create a Spring Boot crud application with MongoDB as an example. This will be a simple example to show MongoDB.

This tutorial explains gRPC Spring Boot integration by implementing one of the gRPC RPC type - server streaming call.

Learn Core Java Skills including the lastest version of Java (Java 22)

Step by step tutorial on building a REST API with Spring (and securing it with Spring Security).

Level up your Java code and explore what Spring can do for you.

In this tutorial, we'll learn how to convert a Hibernate proxy to a real entity object