Java Resources

Looking to test an application with JavaFX on GitLab CI? Let me show you how it's done...

July 7, 2016

by Kai Winter

· 8,176 Views · 3 Likes

MongoDB Java API: Using a Sequence Collection With FindAndModify()

Documents in MongoDB have a unique object ID when they are created. How can we get around this to develop a more effective REST API when document lookups are involved?

July 6, 2016

by Kevin Hooke

· 10,168 Views · 2 Likes

Creating PDF Documents With Apache PDFBox 2

Learn how to create PDF Documents with Java and parse the text, with an addition about a bug that Apache PDFBox 2 exposes in JDK 8.

July 6, 2016

by Dustin Marx

· 58,280 Views · 4 Likes

Self-Describing Logging Using Log4J

How many times have you reviewed a log file without the data key (secret decoder ring) that explains what everything means. When a user more informative and intuitive format like JSON or XML? It's not too hard to do and can be quite helpful. Here's an example.

July 5, 2016

by Bob Reselman

· 8,247 Views · 2 Likes

Java 8 Optional—Replace Your Get() Calls

If we still use the get() functionality on optionals, we're effectively opening ourselves to the same problems as null checks. Here's how we should properly use this new tool in our arsenal.

July 5, 2016

by Mario Pio Gioiosa

· 127,898 Views · 87 Likes

Get Your Java Package Structures Right

Packaging is one of the underrated features of Java. IDEs are so smart that it only takes a few clicks to reorganize the whole project. But we can do better! We can really benefit from a good package structure.

July 4, 2016

by Grzegorz Ziemoński

· 38,288 Views · 26 Likes

My Favorite Spring Data JPA Feature

I’m impressed by the complexity of query you can write using Spring Data. My favourite feature is returning the first or top records from a table.

July 1, 2016

by Martin Farrell

· 47,366 Views · 26 Likes

Convert a List to a Comma-Separated String in Java 8

This quick tutorial shows you how to use streams in Java to convert the contents of a list to a comma-separated string in Java 8.

Updated June 29, 2016

by Mario Pio Gioiosa

· 528,488 Views · 24 Likes

Announcing Java EE Microprofile

At DevNation this week, a new Java EE profile was announced to help Enterprise Java make greater strides in working with microservices architectures.

June 29, 2016

by G. Ryan Spain

· 13,645 Views · 17 Likes

Puppet Server: Advanced Memory Debugging

How to monitor, prevent, and debug memory issues in the open source and proprietary Puppet Server tools.

June 29, 2016

by Chris Price

· 6,627 Views · 1 Like

Functional Programming in Pure Java: Functor and Monad Examples

This article looks at functors and monads from a specific angle of Java data structures and libraries.

June 28, 2016

by Tomasz Nurkiewicz

CORE

· 84,307 Views · 88 Likes

Installing a Java Application as a Windows Service

Ever wondered how to install a Java application as a Windows service? This article shows you how to do it.

June 27, 2016

by Bozhidar Bozhanov

· 44,406 Views · 20 Likes

Java Code Challenge: Bus Gossip Solution

Here's the solution to the last Java Code Challenge: Bus Gossip edition! Well done to everyone who submitted a solution.

June 23, 2016

by Sam Atkinson

· 12,365 Views · 10 Likes

How to Set Up a Maven Repository In Minutes

A tutorial on how to set up Artifactory as a Maven repository to resolve and deploy artifacts in Maven builds.

June 22, 2016

by Sam Rubashkin

· 27,573 Views · 8 Likes

Exception Handling in Real-Life Java Applications

Exception handling in an application can often be varied, inconsistent, or inappropriate. This article proposes an API to make exception handling more robust and efficient.

June 22, 2016

by Jalal Kiswani, PhD

· 51,427 Views · 30 Likes

Java Websocket Containers: The Possibilities

With the Java Websocket API being integrated directly into Java EE7, check out how Tyrus, the reference implementation, integrated with containers for maximum effect.

June 21, 2016

by Abhishek Gupta

CORE

· 8,349 Views · 4 Likes

Lightweight Docker Images for Java Apps

If you're searching for a way to get your Docker images down to a more manageable size, it might just be easier to choose a different starting point.

Updated June 20, 2016

by Kevin Hooke

· 4,797 Views · 3 Likes

Why Java Is a Purely Object-Oriented Language... Or Why Not

Java—is it actually object-oriented? Let's take a look deep into Java to try to figure it out.

June 16, 2016

by Naresh Joshi

CORE

· 31,589 Views · 9 Likes

Relation of Middleware to Microservices, Docker, and Cloud-Native Architectures

This rather long, but extremely well-researched article by Kai Wähner is a follow-up and update to his previous article "Microservices and whether that spells the death of the Enterprise Service Bus and other middleware." In this piece, he discusses how relevant microservices, containers, and a cloud-native architecture is for middleware. Take the time and read this... it's well worth it!

June 10, 2016

by Kai Wähner

CORE

· 31,464 Views · 10 Likes

Java EE 8 in Crisis!

Java EE is in crisis with a clear lack of support from Oracle resulting in EE8's delivery being significantly delayed.

June 10, 2016

by Peter Pilgrim

· 16,942 Views · 13 Likes

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