Java Resources

Using Appropriate Annotations in Spring Testing

Summary of the annotations we should use in each testing scenario using JUnit 5 and Spring Test Framework to eliminate redundant annotations and negative outputs.

Updated November 18, 2021

by Tho Luong

· 16,329 Views · 13 Likes

Import a Function/Module in Dataweave

This tutorial explains how many ways we can import Function or Module in Dataweave - Mule 4. Read the article below to find out how!

November 17, 2021

by $$anonymous$$

· 20,395 Views · 2 Likes

Calling Stored Procedures With IN and OUT Parameters From Spring Data JPA

In this post, explore what was learned while configuring the OUT parameter in calling the stored procedures using Spring JPA.

November 17, 2021

by Mohiadeen Ameer

· 20,497 Views · 4 Likes

OAuth 2.0 Session Clustering

Learn how to control OAuth in a load-balanced application. This post shows how to manage sessions for a simple load-balanced application that uses OAuth 2.0.

November 16, 2021

by Brian Demers

· 5,626 Views · 6 Likes

Java Immutable Explained. Immutable Objects With Examples.

In this article, find answers about immutability and its best practices. Practical examples demonstrate the advantages of immutability and related tricks.

Updated November 15, 2021

by Dmitry Egorov

CORE

· 43,992 Views · 31 Likes

Why Is Char Array Preferred Over Strings To Store Passwords in Java?

Many people prefer a Character array over a string, but they do not know the reason behind it. Read why people are more inclined to use an array than a string.

Updated November 15, 2021

by Amit Gupta

· 15,186 Views · 7 Likes

Fast Spring Boot AWS Lambdas with GraalVM

In this article, I'll discuss how you can take a real-world REST application example adapted to spring-cloud-function and speed up the cold start time using GraalVM.

November 13, 2021

by Ben Foster

· 26,046 Views · 14 Likes

Test-Driven Development With Quarkus

Learn how Quarkus enables test-driven development (TDD) with built-in continuous testing, where tests run immediately after code changes are saved.

November 9, 2021

by Eric Deandrea

· 5,282 Views · 1 Like

Smart Dependency Injection With Spring: Assignability (Part 2 of 3)

In part two of this three-part series, learn about using inheritance to simplify injecting beans with Spring Framework.

Updated November 9, 2021

by Arnošt Havelka

CORE

· 15,825 Views · 8 Likes

Boost throughput with RESTEasy Reactive in Quarkus 2.2

With the new 2.2 release, Quarkus continues to improve in terms of network-related features, reactive programming, and integration with the Eclipse Vert.x event bus.

November 9, 2021

by Daniel Oh

CORE

· 6,403 Views · 1 Like

Creating Mappers Without Creating Underlying Objects in Java

In this short tutorial, we will devise a way of making an object-creation-free, lightweight mapper with rudimentary lookup capability that is suitable for a limited number of associations.

Updated November 8, 2021

by Per-Åke Minborg

· 8,123 Views · 5 Likes

Separation of Reactive and Non-Reactive Code

Avoid unexpected behavior caused by mixing reactive and non-reactive logic when using Project Reactor.

November 7, 2021

by Flaviu Muresan

· 7,931 Views · 6 Likes

From Spring Boot Microservices to Lambda Functions

Get your microservices where they need to be.

November 6, 2021

by Ben Foster

· 33,338 Views · 10 Likes

Add gRPC to Your Java Application

Learn how to autogenerate gRPC code, back a gRPC service with implementation, and spin up a server to send a response to a client.

November 5, 2021

by Emmanouil Gkatziouras

CORE

· 8,342 Views · 11 Likes

How to Avoid Stalling in Reactive Java Applications

We'll go over some core Reactor principles, introduce the Scheduler abstraction, describe how it's used to encapsulate blocking code, and more.

November 3, 2021

by Jimena Garbarino

· 3,174 Views · 1 Like

Camel Quarkus With CouchDB Component

Learn to use Apache Camel Quarkus and CouchDB Component to build a REST API. Camel Quarkus CouchDB Component helps to connect, produce, or consume messages.

November 3, 2021

by Rafael Marques

· 14,151 Views · 2 Likes

Aggregating REST APIs Calls Using Apache Camel

In this post, we are going to build an aggregator for API calls using the Enricher EIP. A tutorial on how to aggregate sequential calls to REST APIs in a single response.

November 3, 2021

by André Luiz De Gusmão

· 23,033 Views · 2 Likes

You only need ONE design pattern

Do you want to know a secret? OOP is fundamentally brain damaged. These aren't my words for the record, they're the collective wisdoms of the fathers of computing.

October 30, 2021

by Thomas Hansen

CORE

· 7,503 Views · 2 Likes