Java Resources

We take a look at two methods of using Akka Streams to query big data sets, and explain why one is more performant than the other.

Updated March 29, 2019

by Piyush Rana

· 14,130 Views · 5 Likes

Java Immutable Objects

Want to learn more about immutable objects in Java?

March 29, 2019

by Yogen Rai

· 46,563 Views · 36 Likes

Java 12: Mapping With Switch Expressions

Learn more about mapping with the latest Java 12 switch expressions.

March 28, 2019

by Per-Åke Minborg

· 33,179 Views · 16 Likes

Java 12: The Teeing Collector

Want to learn more about the newest collector to Java 12?

March 26, 2019

by Marco Molteni

· 31,833 Views · 21 Likes

Connect Oracle SQL Developer to Amazon Redshift

This guide will walk you through the process of setting up a PostgreSQL JDBC driver and an SSL connection.

Updated March 26, 2019

by Anna Shmelkova

· 17,049 Views · 3 Likes

Better Default NullPointerException Messages Coming to Java?

Are enhancements to default NullPointerException messages coming to JDK 13?

March 26, 2019

by Dustin Marx

· 18,011 Views · 5 Likes

When to Use Java 8 Default Methods in Interfaces

When should you use Java 8 default methods?

March 25, 2019

by Mohammad Nadeem

· 24,550 Views · 4 Likes

Java Switch Statement

Switch over to this tutorial on using Java switch statements.

March 25, 2019

by Yogen Rai

· 17,752 Views · 6 Likes

A Guide to the InfluxDBMapper and QueryBuilder for Java: Part 2

Learn how to execute some queries against InfluxDB using the QueryBuilder combined with the InfluxDBMapper.

March 25, 2019

by Emmanouil Gkatziouras

CORE

· 7,245 Views · 5 Likes

Immutable Data Structures in Java

A final reference does not make your objects immutable!

March 22, 2019

by Erik Pragt

· 49,015 Views · 35 Likes

The Benefit of Using AssertThat Over Other Assert Methods

The latest JUnit4.4 release notes indicate that it's better to use AssertThat over other Assert methods.

March 22, 2019

by Mohammad Nadeem

· 33,848 Views · 6 Likes

Offline Resolution of XSDs Using Maven JAXB

Learn more about this offline resolution for using the JAXB Maven Plugin.

Updated March 20, 2019

by Aritra Nag

· 13,354 Views · 2 Likes

Redis in a Microservices Architecture

Learn how to use Redis with Spring Cloud and Spring Data to provide configuration server, a message broker, and a database.

March 20, 2019

by Piotr Mińkowski

· 54,791 Views · 27 Likes

Var and Language Design in Java

Learn everything you need to know about var in Java.

March 20, 2019

by Peter Verhas

CORE

· 11,984 Views · 13 Likes

Message Routing in Akka

Here's an introductory article on message routing in Akka with Scala.

Updated March 19, 2019

by Efthymios Vafeiadis

· 14,416 Views · 9 Likes

Migrating From Lombok to Kotlin

Shorter code should never be the goal. It’s the readability of the code that matters.

March 19, 2019

by Erik Pragt

· 42,495 Views · 32 Likes

21 Websites to Learn Coding/Programming for Free Online

Whether you're learning languages, processes, frameworks, or just want to get started, there's sure to be a website here for you.

March 18, 2019

by Javin Paul

· 18,149 Views · 13 Likes

The Font of All Knowledge About Java and Fonts

Here's everything you need to know about fonts in the JDK.

March 18, 2019

by Simon Ritter

· 9,571 Views · 3 Likes

Invoking REST APIs From Java Microservices

In this quick post, we take a look at how services can invoke other services via REST APIs over HTTP.

March 15, 2019

by Niklas Heidloff

CORE

· 38,573 Views · 7 Likes

A Case Study of Implementing an Efficient Shuffling Stream/Spliterator in Java

Shuffling a stream in Java isn't the easiest thing to do — but it is often useful.

March 14, 2019

by Grzegorz Piwowarek

· 11,196 Views · 8 Likes

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