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Developing a project using Java Spring Framework, JSON, JPA and PostgreSQL

? Wrapping up an exciting project using Java Spring Framework and PostgreSQL! It’s been a rewarding experience building a robust, scalable solution while deepening my skills in backend development and data persistence. Ready for the next challenge! ?

Jan 15, 2025 am 10:09 AM

Default Methods in Java

1. Understanding Default Methods Default methods are a type of method in interfaces that have an implementation. This feature was introduced to support backward compatibility with existing interfaces and to enhance the ability to extend librari

Jan 15, 2025 am 09:50 AM

dvanced Java Multithreading Techniques for High-Performance Applications

As a best-selling author, I invite you to explore my books on Amazon. Don't forget to follow me on Medium and show your support. Thank you! Your support means the world! Java's multithreading capabilities offer powerful tools for creating efficien

Jan 14, 2025 pm 08:08 PM

Understanding Spring Security and OAuth

In this article we will explore Spring security and will build a authentication system with OAuth 2.0. Spring Security is a powerful, highly customizable framework for implementing robust authentication and access control mechanisms in Java

Jan 14, 2025 pm 04:05 PM

How to index in SolrJ

If you want to index information (a document) in Solr. Indexing is also simple using SolrJ. Users build the documents they want to index as instances of SolrInputDocument and provide them as arguments to one of the add() methods on SolrClient. The

Jan 14, 2025 pm 02:11 PM

JSON Diff: Comparing and Identifying Changes in JSON Data

JSON (JavaScript Object Notation) has become a widely used data format for transmitting and storing structured data, especially in web development. However, comparing two JSON files or structures can often be challenging, particularly when dealing wi

Jan 14, 2025 pm 02:03 PM

Java interacting with Apache Avro

This Java-Avro Sample demonstrates how we setup a POJO and then save the info into an Avro file to later by created as a GenericRecord instance. Ultimately, this is verified by using the assertion assert True as the sample shows us.

Jan 14, 2025 pm 12:08 PM

Builder references

Reference to a constructor uses the syntax: classname::new. It can be assigned to a functional interface that has a constructor-compatible method. Example with Parameterized Constructor If the functional interface has a method with a parameter

Jan 14, 2025 am 10:08 AM

Building and Deploying Your First Java App with Docker in Just inutes

Let's create a simple java app which returns text and available on port 1800 of your local environment using Docker container in 5 minutes (depends on your internet connection speed). You can always grab the full source code from my public reposito

Jan 14, 2025 am 09:42 AM

Method references

Concept: A method reference allows you to reference a method without executing it. Relationship with lambda expressions: Both require a target type context composed of a compatible functional interface. Functional instance: A method reference

Jan 14, 2025 am 08:56 AM

Secrets of Java&#s String Pool

1. Introduction to Java's String Pool In Java, strings are a fundamental part of programming. The String Pool, also known as the String Intern Pool, is a special memory area where Java stores string literals to optimize memory usage. This conce

Jan 14, 2025 am 08:33 AM

Predefined functional interfaces

The previous examples used manually defined functional interfaces to illustrate the basic concepts. However, JDK 8 introduced the java.util.function package, which provides predefined functional interfaces for ease of use. Package now

Jan 14, 2025 am 08:18 AM

Pros and Cons of ays to Instantiate Objects: Telescope Pattern, JavaBeans, and Builder Pattern

Instantiating objects is an essential activity in object-oriented programming. There are various ways to achieve this, each with its characteristics, advantages, and disadvantages. In this post, we will explore three popular approaches: Telescope Pat

Jan 13, 2025 pm 10:13 PM

Static variables in Java

Static vs Instance Variables Whenever a variable is declared as static, this means there is only one copy of it for the entire class, rather than each instance having its own copy. Static variable When a static variable is declared, a single

Jan 13, 2025 pm 06:05 PM