Tutorials

GlassFish & Payara Auto-Clustering: Running Jakarta EE Highly-Available Applications in the Cloud

Check out out-of-box GlassFish & Payara auto-clustering implementation details and infrastructure topology specifics.

The Debugger Checklist (Part II)

In the Debugger Checklist (Part I), I introduced some of the high level concepts and reviewed some of the common things you can do.

In this part, we’ll get down to the process. Again, it’s important to stress that this is boiled down and concentrated!

Thorntail Fat, Thin, and Skinny Approach for Running Microservice Java Applications

Thorntail, originally WildFly Swarm, is most suitable for packaging applications as JAR, WAR, or EAR files. The most important value is in the functional agility the Thorntail provides. You can start with the stripped down version of Thorntail, adding the required parts and application code on top. Below we will …

The Debugger Checklist (Part I)

Win at debugging by following an organized process and leveraging the tools you already have!

We’re going to skip ahead to a point where you have a bug you can reproduce (consistently or otherwise) but you don’t understand or can’t prove the cause.

Project Panama for Newbies (Part 3)

We are going to dig a little deeper in our exploration of Project Panama and how to talk to third party libraries such as SDL & OpenGL.

With the skills you’ve learned from Part 1 and Part 2, you should be able to call most of the common function signatures in many libraries out in the wild.

8 Debugging Tips for IntelliJ IDEA Users You Never Knew Existed

As developers, we’re all familiar with debuggers. We use debugging tools on a daily basis – they’re an essential part of programming. But let’s be honest. Usually, we only use the breakpoint option. If we’re feeling frisky, we might use a conditional breakpoint.

But guess what, the IntelliJ IDEA debugger has many powerful and cutting-edge features that are useful for debugging more easily and efficiently.

Daemon Thread Java Code Quiz

When we are working with Threads, it’s important to know when to use a daemon or a non-daemon Thread.

Do you know if the main Thread is a daemon or not? And do you know what a daemon Thread is?

That’s what you will find out by trying out the following Java Challenge!

Function Calculation Java Challenge

Functional programming is a very powerful paradigm that makes code more concise and easier to understand.

In Java, the “Function” functional interface can be used as a first-class citizen function, meaning that we can pass a function to a method and declare it as a variable, giving the developer a lot of power.

And now it’s time for you now to test your abilities with lambdas and functional interfaces!

Tomcat and TomEE Clustering Automation

Apache Tomcat is an open-source application server maintained by the Apache community. It is one of the most popular solutions for hosting Java applications due to its ease-of-use and lightweight yet versatile functionality.

Learn how how to install automatically clustered Tomcat and TomEE servers on Jelastic to get a highly available solution that can efficiently serve a large number of users, process high traffic, and be reliable!

Stream Limit Filter Java Challenge

To manipulate data from a collection by using a Java stream is handy and cleaner than the alternatives.

When you learn how to use streams, your Java code will be much better, and knowing how to limit and filter data with streams is crucial for you to do something useful with streams in Java.

Getting Started with Snyk for Secure Java Development

If you’re a Java developer who wants to develop your applications more securely, you’ve come to the right place. Snyk can help you with that mission.

This article explains how to begin with Snyk for secure Java development so you can be more secure from the get-go.