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Using annotations in Java to make a strategy

I went through a very interesting situation at work and wanted to share the solution here. Imagine you need to process a set of data. And to deal with this set of data you have several different strategies for this. For example

Jan 10, 2025 pm 12:13 PM

Dev/prod parity : Spring Boot Testcontainers

Introduction Dev/prod parity aims to reduce the gap between development and production environments. This article targets the tools gap, especially in integration testing with Spring Testcontainers, as a way to make development and production a

Jan 10, 2025 am 11:03 AM

Java Foundation

What is Java Java is a high-level, object-oriented, and platform-independent programming language. It is widely used for building web applications, mobile applications, enterprise software, and more. Its "write once, run anywhere" capabil

Jan 10, 2025 am 09:24 AM

When Should You Use Threads in Java?

1. Understanding Threads: The Basics Threads are lightweight processes that can run concurrently with other threads within the same application. Utilizing threads can help manage multiple tasks simultaneously, leading to more efficient use of s

Jan 10, 2025 am 09:22 AM

When to use ResponseEntity?

Let's look at the controller with the endpoint below: @RestController @RequestMapping("v1/hello") public class ExampleController { @GetMapping public ResponseEntity get() { return ResponseEntity.ok("Hello World!"); }

Jan 10, 2025 am 08:44 AM

'I fished, Java!': Class and Object in Focus: From Abstraction to Reality

In Object Oriented Programming (OOP), we seek to represent elements of the real world within our programs. To do this, we abstract from the object its characteristics (what they have) and their behaviors (what they do), translating these ideas

Jan 10, 2025 am 08:36 AM

How Do You Use Encapsulation with Micronaut Annotations?

This encapsulated design prevents the direct modification of userId and name, ensuring only authorized operations can alter their values. Micronaut Features in Action Micronaut, a modern JVM-based framework, provides annotations that take encapsula

Jan 10, 2025 am 08:13 AM

DTO & DAO in Software Development

DTO (Data Transfer Object) and DAO (Data Access Object) are key design patterns often used in software development, particularly in Java-based applications. Here's an explanation of each and how they relate: DTO (Data Transfer Object): Purpose:

Jan 09, 2025 pm 10:10 PM

Top Programming Languages to Learn in �️

The tech world evolves rapidly, and staying ahead means learning the programming languages that are shaping the industry. Here’s a list of the top 10 languages to focus on in 2025 and why they matter: 1. Python ? Why Learn: Versatile, beginner-fri

Jan 09, 2025 pm 06:05 PM

Code examples for the synchronizers

Here are code examples for the synchronizers mentioned in item 80, with explanations of use to facilitate the study: 1. CountDownLatch: Single-use barrier for thread coordination CountDownLatch allows one or more threads to wait

Jan 09, 2025 pm 02:07 PM

Item Documente a thread safety

Importance of documenting thread safety Part of the class contract: How a class handles concurrent access is crucial to its clients. Risks of wrong assumptions: Poor or excessive synchronization (Items 78 and 79). Errors

Jan 09, 2025 pm 02:06 PM

Item Use lazy initialization sparingly

What is lazy initialization? Definition: Defer initialization of a field until it is accessed for the first time. Benefits: Avoids unnecessary initializations if the field is never used. Applications: Used for static and ins fields

Jan 09, 2025 pm 02:03 PM

Communicating JAVA with GeminiAI

If you program in Java and have never 'played' with GeminiAI, this article will be a great introductory guide, here I will show in a very simple way how to send requests to Gemini and return JSON, like a Rest API. ?‍? What am I using? ?

Jan 09, 2025 am 06:45 AM

Serializing an enum in a Spring Boot web application

Enum is a good structure to define a set of limited and well defined values inside the domain of our application. They could help to prevent impossible states in our codebase. The scenario Let's use a note taking web application as an exa

Jan 09, 2025 am 06:34 AM