Java Resources

Set up Multiple DataSources With Spring Boot and Spring Data in PCF

This tutorial will guide you in the process to setup a Spring Data application to access multiple SQL services in PCF.

June 27, 2018

by Marcos Barbero

· 109,602 Views · 6 Likes

Interesting Java Jersey and RxJava Finding

Did you know that the Java Jersey library will sometimes give you an error message for the @ Context annotation? Here is how to fix it!

June 25, 2018

by Liviu Tudor

· 11,054 Views · 4 Likes

How to Read a Thread Dump

Want to learn how to read a thread dump? Click here to learn more about thread dumps in Java applications and how to decipher them.

June 23, 2018

by Justin Albano

CORE

· 198,305 Views · 82 Likes

Java's Ternary Is Tricky With Autoboxing/Unboxing

Let's take a closer look at why Java handles boxing with its ternary operator the way it does.

June 22, 2018

by Dustin Marx

· 12,095 Views · 3 Likes

How to Write a C-like sizeof Function in Java

If you just started learning Java and come from a C background, this article is for you! Click here to read more about the difference between C and Java in relation to the sizeof function.

June 22, 2018

by Javin Paul

· 39,224 Views · 7 Likes

Java 8 Map, Filter, and Collect Examples

How to use the Map and Filter functions in Java 8 to transform and filter elements of objects.

June 21, 2018

by Javin Paul

· 798,182 Views · 45 Likes

Registering Multiple Local Microservice Instances With Netflix Eureka

Learn to register local microservice instances with Eureka so they are accessible to consuming microservices.

June 21, 2018

by Mark Heckler

· 37,481 Views · 6 Likes

Integrating Vault with Spring Cloud Config Server

This guide walks through the process of creating a central configuration management for microservices using Spring Cloud Config integrating with HashiCorp Vault.

June 20, 2018

by Marcos Barbero

· 20,561 Views · 4 Likes

Java Lambda Expressions: Functions as First-Class Citizens

Whether you're migrating to Java 8 or just want a refresher, here's an excellent primer of lambda expressions and how they help bridge OOP and FP in Java.

June 20, 2018

by Yogen Rai

· 22,773 Views · 18 Likes

JDK 11: Beginning of the End for Java Serialization?

Are big changes afoot with JDK 11? See what's on the horizon with Java 11 and how you can prepare for those pending changes to serialization.

June 20, 2018

by Dustin Marx

· 29,992 Views · 8 Likes

Duplicate Strings: How to Get Rid of Them and Save Memory

Learn why duplicate stings emerge in Java applications and how you can detect and remove them to avoid numerous memory problems.

June 19, 2018

by Misha Dmitriev

· 28,052 Views · 9 Likes

Java 8 Optional: Handling Nulls Properly

Let's learn how to use Java 8's Optionals to make your null checks simple and less error-prone!

June 18, 2018

by Yogen Rai

· 218,939 Views · 51 Likes

Building and Testing Message-Driven Microservices Using Spring Cloud Stream

In this microservice testing tutorial, learn to build, scale, run and test messaging microservices based on the RabbitMQ broker.

June 18, 2018

by Piotr Mińkowski

· 18,561 Views · 5 Likes

User Impersonation With Spring Security

This article takes you through the process of creating a user impersonation protocol for super/admin users with Spring Security.

June 18, 2018

by Marcos Barbero

· 16,447 Views · 2 Likes

Peeking Inside Java Streams With Stream.peek

How to use the Stream.peek(Consumer) method in Java to help visualize stream operations.

June 15, 2018

by Dustin Marx

· 39,044 Views · 10 Likes

Mule ESB and Microsoft Azure Service Bus

This article outlines a few ways of integrating Mule ESB with the MS Azure Service Bus Queues.

June 15, 2018

by Ashwin Bala

· 12,188 Views · 2 Likes

Top 10 Books of All-Time for Java Programmers

Here is a list of ten books that are essential for any Java programmers who want to improve their knowledge and understanding of Java.

June 15, 2018

by Javin Paul

· 219,732 Views · 81 Likes

Kafka in Indirect Communication Paradigm

Message brokers today provide an architecturally simple and scalable solution among other indirect communication approaches.

Updated June 14, 2018

by Pradeep Peiris

· 16,611 Views · 18 Likes

Using Font Awesome Icons in a JavaServer Faces h:commandButton

Performance is always a concern for IoT apps, so here's how to use items from the Font Awesome library to label command buttons in a memory-friendly way.

June 14, 2018

by Ken Fogel

· 13,242 Views · 1 Like

How to Visualize Java Module Graphs

Want to learn more about how to visualize Java Module Graphs? Click this tutorial to learn how step-by-step!

June 14, 2018

by Rahman Usta

· 15,359 Views · 15 Likes

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