Java Resources

Mixing Java Functions and Groovy Closures

When mixing Java and Groovy, the time might come when you want to dip into Java's functional features, but while using Groovy's syntax. Enter closures.

May 15, 2017

by Reinout Korbee

· 25,928 Views · 9 Likes

Java Garbage Collection: Best Practices, Tutorials, and More

Buckle up and hold your nose, it's time to manage memory. Garbage collection is a complicated endeavor, and here's how to get the most out of GC.

May 15, 2017

by Angela Stringfellow

· 67,231 Views · 43 Likes

Lightweight Embedded Java REST Server Without a Framework

Check out this example of a simple lightweight REST server with the appropriate middleware and less custom code than Spring Boot.

May 12, 2017

by Bill O'Neil

· 57,942 Views · 16 Likes

In-Memory Data Grids With Hazelcast, Hibernate, and Spring Boot

If your priority is the performance of queries on large amounts of data and you have a lot of RAM, an in-memory data grid is the right solution for you!

May 12, 2017

by Piotr Mińkowski

· 16,843 Views · 12 Likes

Fix the Slow Startup Time of My Java Application Running on macOS Sierra

When I started an app with IntelliJ, it always took more than 60 seconds to start the deployed app. No one bothered to examine why, so I took the 30 minutes to do it.

May 12, 2017

by Jeroen Reijn

CORE

· 15,452 Views · 5 Likes

How-To: Convert SOAP APIs to REST APIs

SOAP APIs weren't designed for integration, with developer UX in mind. The new SOAP Builder tool converts your SOAP-based endpoint into a unified REST API.

May 11, 2017

by Ross Garrett

· 54,857 Views · 1 Like

EC Rejects Jigsaw

In a close and, at times, contentious vote, the JCP Executive Committee has tabled Project Jigsaw for up to 30 days to work out the tough problems it faces.

May 10, 2017

by Mike Gates

· 32,463 Views · 38 Likes

Direct Logs to Remote System With Log4j

If an application is running on a remote system, you need the logs on your local machine. Learn how to do direct logs to whichever machine you desire.

May 10, 2017

by Merghoob Khan

· 23,823 Views · 8 Likes

Java's Observer and Observable Are Deprecated in JDK 9

Around since Java 1.0, the Observable class will be deprecated in Java 9, as is the Observer interface. See how they've been replaced over time.

May 9, 2017

by Dustin Marx

· 28,241 Views · 2 Likes

Concurrency: Java Futures and Kotlin Coroutines

Java as a language makes concurrent code look unpleasant. Maybe Kotlin can help. Yet another, although experimental, step would be to use coroutines instead of Futures.

May 9, 2017

by Nicolas Fränkel

CORE

· 16,335 Views · 13 Likes

Database Connection Pooling in Java With HikariCP

Connection pooling is a great technique for database optimization, and HikariCP is among the best. Let's set up multiple connection pools with different configurations.

May 8, 2017

by Bill O'Neil

· 239,727 Views · 12 Likes

What's New in Java 9? (Besides Modules)

Java 9 is about the modularization of the JDK (known as Project Jigsaw). But like previous releases, it is also about lots of other features.

May 8, 2017

by Mahmoud Anouti

· 77,668 Views · 75 Likes

Java Enum Lookup by Name or Field Without Throwing Exceptions

Wish you could call up Enums by names or values while ignoring nonexistent ones? Wish you didn't have to deal with exceptions? Without boilerplate? You can!

May 5, 2017

by Bill O'Neil

· 64,013 Views · 27 Likes

Java Service Loader vs. Spring Factories Loader

Java and Spring offer loading capabilities to achieve IoC at the module level. They are pretty similar, with Spring being a little more flexible.

May 2, 2017

by Nicolas Fränkel

CORE

· 31,182 Views · 12 Likes

Introducing Semantic Web Programming (Part I)

In this article, we take a quick introductory look at Semantic Web and RDF programming, and how to set up your dev environment.

May 2, 2017

by Ngoc Minh Tran

CORE

· 9,471 Views · 5 Likes

Database Versioning With Flyway and Java

Flyway makes database versioning almost trivially easy. You can put migration scripts in a directory of choice and the database will be magically migrated for you.

May 2, 2017

by Bruno Krebs

· 44,876 Views · 4 Likes

A Little Lazy Lambda Tutorial

Let's see how you can enhance performance while also keeping your code tidy through the glorious use of lambda expressions.

May 1, 2017

by Dan Newton

· 38,684 Views · 42 Likes

Handling ‘State’ in Java WebSocket Applications

State is a concept dealt with in several facets of application development. With the newer paradigm of WebSockets, how do you handle state here?

April 29, 2017

by Abhishek Gupta

CORE

· 20,727 Views · 6 Likes

A Look at DataSynapse GridServer (With Example)

DataSynapse GridServer is a highly scalable infrastructure that enables app services to operate virtually. Learn about working with it and client implementation in Java.

April 28, 2017

by Arun Pandey

CORE

· 15,977 Views · 9 Likes

Nitrite: An Embedded NoSQL Database for Java and Android

Nitrite is a serverless embedded database ideal for desktop, mobile, or small web applications. Learn the basics of it, how to install it, and how to use it.

April 27, 2017

by Anindya Chatterjee

· 28,358 Views · 5 Likes

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