Java Resources

Secure Java REST APIs With JSON XACML and ALFA

how to use a JSON XACML Policy Enforcement Point to secure REST API endpoints using ALFA, XACML, and JSON.

May 19, 2018

by David Brossard

· 8,179 Views · 5 Likes

Reduce your application size by learning how you can join database tables directly from Java without using SQL coding and how you can view joins using standard Java Streams.

May 18, 2018

by Per-Åke Minborg

· 12,088 Views · 7 Likes

Guide to Java 8 Concurrency Using Executors

Here's an overview of the improvements Java 8 brought to concurrent programming with a focus on ExecutorService.

May 17, 2018

by Himani Arora

· 124,538 Views · 28 Likes

Creating a Maven Archetype

Read this tutorial in order to learn how to create a Maven archetype from an existing project. This person uses Eclipse IDE to create the Maven project.

May 17, 2018

by Anupam Gogoi

· 18,479 Views · 5 Likes

Mocking Files for JUnit Testing a Spring Boot Web Application on Synology NAS

You can use a Spring Boot application to perform JUnit testing on NAS — learn how to build such a web app in this tutorial.

May 17, 2018

by Marc Vanbrabant

· 26,443 Views · 2 Likes

How AtomicReference Works in Java

AtomicReferences are handy to have around. Let's see one in action and compare it to synchronized blocks to see the benefits they bring.

May 16, 2018

by Sankar Banerjee

· 21,477 Views · 6 Likes

Microservices: Externalized Configuration

Learn about how to implement a configuration server with Spring Cloud for externalized configuration for your microservices architecture.

May 16, 2018

by Alejandro Duarte

CORE

· 36,214 Views · 68 Likes

Java Templating With Rocker

This tutorial will dive into templating with Rocker, a Java 8 template engine designed to be statically typed, and the pros and cons of using this tool.

May 15, 2018

by Michael Scharhag

· 15,976 Views · 2 Likes

Vectorized Algorithms in Java

Are projects like Apache Spark about to get a serious boost? In this post, we learn about vectorized algorithms in Java, and what it means for the world of big data.

May 15, 2018

by Richard Startin

· 21,930 Views · 2 Likes

Dockerizing Your Scala App

Here's a step-by-step guide that details how to containerize your Scala apps with Docker, including how to set up your Dockerfile.

May 15, 2018

by Emmanouil Gkatziouras

CORE

· 18,502 Views · 4 Likes

Java's @Serial Annotation

JDK 11 might see a new annotation. Let's see how this one is meant to help with your serialized classes and what the roadmap looks like.

Updated May 15, 2018

by Dustin Marx

· 11,812 Views · 2 Likes

Stream a File to AWS S3 Using Akka Streams in Play Framework

Here's a handy guide to start streaming your files to the cloud (AWS S3) in particular when using Akka, Play Framework, and Alpakka.

Updated May 14, 2018

by Sidharth Khattri

· 13,616 Views · 2 Likes

Mule Expressions Using Java

Read this short and simple tutorial in order to learn how to use Java code to perform validation for variables in the Mule flow.

May 12, 2018

by Varun Goyal

· 18,664 Views · 3 Likes

Up-to-Date Cache With EclipseLink and Oracle

Let's look at how to use Oracle's Continuous Query Notification feature and how you can use it when updating or invalidating caches when data changes.

Updated May 12, 2018

by Piotr Mińkowski

· 6,938 Views · 3 Likes

Parallel and Asynchronous Programming in Java 8

Java 8 offered a boon to parallel and asynchronous programming. Let's check out the lessons Java learned from JavaScript and how JDK 8 changed the game.

May 11, 2018

by Lisa Steendam

· 77,450 Views · 17 Likes

Service Discovery With Eureka and Zuul

Learn how to use Spring Boot with Zuul and Eureka to create a simple discovery service, routing .NET applications through a Zuul gateway.

May 10, 2018

by Jarett Lear

· 89,135 Views · 7 Likes

JPA and Hibernate: Persist LocalDate and LocalDateTime [Video]

As useful as JPA is, you still run into problems when using it with Java 8's updated Date and Time API. Here's how to build an AttributeConverter and how Hibernate helps.

May 8, 2018

by Thorben Janssen

· 11,559 Views · 2 Likes