Java Resources

Consumer-Driven Contract Testing With Spring Cloud Contract

Implement CDC testing with Spring Cloud Contract and two sample Spring Boot applications to understand the communication between microservices.

Updated October 15, 2020

by Jagdish Raika

· 16,561 Views · 3 Likes

Build J2EE Microservices Architecture

This post will cover the following aspects: Keycloak setup, Eureka service registration and discovery, Spring Cloud API gateway, and more!

October 15, 2020

by Kunkka Li

· 7,849 Views · 4 Likes

Selenium Grid 4 Tutorial For Distributed Testing

Selenium Grid is packed with features for Selenium test automation, this Selenium 4 tutorial will guide you in performing Distributed Testing.

October 14, 2020

by Himanshu Sheth

CORE

· 14,797 Views · 8 Likes

Learning by Doing: How to Learn Java Basics by Building Your Own Project

If you are reading this blog post, you might also be the one who wants to learn Java. Ain’t I wrong?

October 13, 2020

by John Selawsky

· 11,069 Views · 2 Likes

Visitor Design Pattern In Java

The Visitor design pattern lets us separate algorithms from the objects on which they operate. See how to implement it to follow the open/closed principle.

October 13, 2020

by Brijesh Saxena

· 8,074 Views · 16 Likes

Moving Toward Inline Classes: JEP 390 and the @ValueBased Annotation

Candidate JEP 390 ("Warnings for Value-Based Classes&") was announced this past week by Mark Reinhold on the OpenJDK jdk-dev mailing list. This is a JDK Enhan...

October 13, 2020

by Dustin Marx

· 4,383 Views · 1 Like

Observer Design Pattern In Java

Observer Pattern maintains a one-to-many dependency between a Subject and its dependents so that when the state of the Subject changes, dependents get notified.

October 12, 2020

by Brijesh Saxena

· 12,802 Views · 4 Likes

Iterator Design Pattern In Java

The Iterator Pattern is a relatively simple behavioral design pattern that provides a simple way to iterate through the collection of objects.

October 12, 2020

by Brijesh Saxena

· 12,080 Views · 6 Likes

Azure Spring Cloud: A Comprehensive Overview

Learn about Azure Spring Cloud and its main features quickly and with ease in order to build, deploy, scale, and manage your applications in the cloud.

October 9, 2020

by Domenico Sibilio

· 9,614 Views · 2 Likes

How JPAstreamer Can Help You Write Type-Safe Hibernate Code Without Unnecessary Complexity

Learn how to use Hibernate in a type-safe manner without unnecessary complexity using standard Java Streams.

October 9, 2020

by Mislav Milicevic

· 9,795 Views · 7 Likes

Use Both JWT and Opaque Access Tokens With Spring Boot

This article will introduce how to build a simple application that can validate JWTs remotely or locally based on the specific use case.

October 9, 2020

by Brian Demers

· 17,244 Views · 6 Likes

Building a REST API With Quarkus

Focusing on fast start-up times and low memory usage making it more suitable to run within container orchestration platforms like Kubernetes.

Updated October 8, 2020

by Dan Newton

· 13,475 Views · 9 Likes

Java Spring OAuth2 and Basic Auth Support

The goal of the post is to share an idea of how can we provide the basic authentication and OAuth 2 authentication for the APIs.

October 7, 2020

by Kanifnath Gaikwad

· 20,392 Views · 4 Likes

Kafka Security With SASL and ACL

Tutorial covering authentication using SCRAM, authorization using Kafka ACL, encryption using SSL, and using camel-Kafka to produce/consume messages.

October 6, 2020

by Ramu kakarla

· 41,554 Views · 2 Likes

Oracle Database Link and Hibernate Mapping

The article is to describe how to create a Database link in Oracle and use Hibernate to create mapping for the remote table.

October 6, 2020

by Eason YIN

· 7,122 Views · 3 Likes

Facade Design Pattern In Java

Here I am with another article on design patterns. A Facade object is use to provide a simple interface by hiding complexities of a complex system.

October 6, 2020

by Brijesh Saxena

· 11,759 Views · 8 Likes

CRUD Operations on Deeply Nested Comments: Scalable Spring Boot and Spring Data approach

In this post, I present CRUD operations on deeply nested comments, stored in a relational database via Spring Boot and Spring Data. The approach is scalable but uses only JPQL and very few pessimistic locks.

October 6, 2020

by Alexander Eleseev

CORE

· 7,043 Views · 1 Like