Articles

Jarkata EE8 and Eclipse Che 7 Are Out!

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Eclipse + Cloud = Love

Two major announcements over the last few days in the Java community! Today, the Eclipse Foundation announced both the Jakarta EE 8 release and Eclipse Che 7 release. And it’s all about the cloud!

You may also like: Jakarta EE and Beyond

Jakarta EE 8

Two years after Oracle handed over Enterprise Java to the Eclipse Foundation, they provided Jakarta EE, and since then, they have released version 8. As its name suggests, this version is compatible with Java EE 8, but is now completely open-source, and therefore, royalty-free.

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How to Do Deep Learning for Java

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Deep in thought studying deep learning for Java.

Introduction

Some time ago, I came across this life-cycle management tool (or cloud service) called Valohai, and I was quite impressed by its user-interface and simplicity of design and layout. I had a good chat about the service at that time with one of the members of Valohai and was given a demo. Previous to that, I had written a simple pipeline using GNU Parallel, JavaScript, Python, and Bash — and another one purely using GNU Parallel and Bash.

I also thought about replacing the moving parts with ready-to-use task/workflow management tools like Jenkins X, Jenkins Pipeline, Concourse or Airflow, but due to various reasons, I did not proceed with the idea.

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How to Build Graal-Enabled JDK8 on CircleCI

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The GraalVM compiler is a replacement to HotSpot’s server-side JIT compiler, widely known as the C2 compiler. It is written in Java with the goal of better performance compared to the C2 compiler. New changes, starting with Java 9, mean that we can now plug in our own hand-written C2 compiler into the JVM thanks to JVMCI. The researchers and engineers at Oracle Labs have created a variant of JDK8 with JVMCI enabled, which can be used to build the GraalVM compiler. The GraalVM compiler is open source and is available on GitHub (along with the HotSpot JVMCI sources needed to build the GraalVM compiler). This gives us the ability to fork/clone it and build our own version of the GraalVM compiler.

In this post, we are going to build the GraalVM compiler with JDK8 on CircleCI. The resulting artifacts are going to be:

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Spring Bean Lifecycle: Using Spring Aware Interfaces

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Through Spring Aware interfaces, you can access Spring bean lifecycle events.

Spring Aware interfaces allow you to look into the inner workings of the Spring Framework. Through Spring Aware interfaces, you can access the Spring context, or Spring bean lifecycle events.

Your Spring beans might require access to framework objects, such as ApplicationContext, BeanFactory, and ResourceLoader. To gain access, a bean can implement one of the many Aware interfaces of the Spring Framework.

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Open Source Integration With Apache Camel and How Fuse IDE Can Help

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Take any integration project and you have multiple applications talking over multiple transports on multiple platforms. As you can imagine, in large enterprises, applications like this can get complex very fast. Much of the complexity stems from two issues:

  1. Dealing with the specifics of applications and transports
  2. Coming up with good solutions to integration problems

Making your applications speak transports and APIs is relatively easy on its own. I’m sure everyone knows how to send JMS messages to their broker of choice; though it still requires in-depth knowledge of the JMS specification, which many developers may not have. On top of that, what happens when you want to route that JMS message to another application? You then have to take care of mapping the JMS message to the application plus handle any new concepts related to the application. Add a dozen other applications into the mix and you’ve got quite a headache on your hands.

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Beginners Guide to Building an Online Retail Web Shop Workshop (Domain Model)

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With the release of Red Hat Decision Manager 7.3, I’ve started updating my free online workshop, a beginners guide to building an online retail web shop.

The previous article covered installing the tooling and setting up a project. This update is the for the third lab in this workshop, with more to follow. Learn how to create a domain model with Red Hat Decision Manager.

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Everything You Need to Know About Java Certification

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Thinking of beginning your career in programming? Not a bad idea, as there’s a high demand for programmers today. Also, being certified in a technology or programming language can considerably increase the chances of employment and improve your skills. One of the most widely used programming languages is Java, and thus, Java programmers are in high demand all around the world. If you are looking to get a Java certification, you can get it from Oracle.

Getting this certification is not that difficult or expensive. Once you’re certified, you can make your own applications, games, etc. You can use coupons from GoDaddy to host your Java app; these coupons can help you save a decent amount of money when launching your app. You can also use coupons to purchase the test preparation material, or when booking the test, you can save a decent amount of money on the test.

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JPA With Eclipse and MySQL Using Java Configuration

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In this article, we will discuss the Java persistence API configuration with EclipseLink and MySQL.

The Java Persistence API is a standard specification for ORM (Object Relational Mapping) implementations. Also, it shows how to define a PLAIN OLD JAVA OBJECT (POJO) as an entity and how to manage entities with relations.

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Working With Filters in Spring

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In this article, I am going to talk about how to best implement filters over HTTP requests in Spring. That is, assuming we have a program listening in a URI, we can specify that we want to execute something before the requests are processed by the controller.

This is very useful if we want all the requests to meet a requirement, for example, that they must include a specific header.

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How to Send and Receive Product Objects To or From a Queue [Video]

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In the video below, we take a closer look at how to send or receive product objects to or from a queue using Spring, JMS, and RabbitMQ with annotations. So, let’s get started!

Check out the links below to download the code and PPT:

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