Java Resources

Jlink in Java 9

If you haven't played around with Jlink yet, see what Java 9's new command line tool can do to help you create a lightweight, custom JRE.

January 9, 2018

by Shubham Agarwal

· 51,067 Views · 59 Likes

Understanding flatMap

Taking a walk on Java's functional side? Here are a few good things to know about how flatMap works and what it offers for Optionals and Streams.

January 8, 2018

by Paweł Szeliga

· 37,701 Views · 19 Likes

Spring-Based Apps: Migrating to JUnit 5

With JUnit 5 newly available, we take a look at how migrating your JUnit 4 tests to JUnit 5 might go as well as a couple of pitfalls to avoid.

January 8, 2018

by Biju Kunjummen

· 27,454 Views · 4 Likes

7 Things to Know for Getting Started With Spring Boot

Just getting into Spring Boot? Then check out this post for a helping hand in understanding Spring Boot's architecture and functionality.

January 6, 2018

by Ranga Karanam

CORE

· 237,673 Views · 70 Likes

How to Improve the Performance of a Java Application

Ensuring your Java application is running at peak performance can take some effort. Here's how you can help ensure the performance of your Java application is top notch.

January 4, 2018

by Eugen Paraschiv

· 61,577 Views · 47 Likes

Java Quiz 8: Upcasting and Downcasting Objects

Check in on the results from a previous quiz about unary operators in Java and try out your knowledge up upcasting and downcasting objects.

January 4, 2018

by Sar Maroof

· 16,730 Views · 4 Likes

dotenv for Java and the JVM

Wish configuring your microservices was easy? Well, while it started with Ruby, dotenv has a Java port that brings configuration into a single method.

January 3, 2018

by Carmine DiMascio

· 43,698 Views · 14 Likes

Integration Tests With Maven

Integration tests with Maven have different requirements from simple unit tests. This article covers some of these different configurations.

January 3, 2018

by Emmanouil Gkatziouras

CORE

· 41,752 Views · 18 Likes

Dockerizing Jenkins 2, Part 1: Declarative Build Pipeline With SonarQube Analysis

In the first part of this Dockerizing Jenkins series, learn to run Jenkins on Docker, and automate plugin installation, Java and Maven tool configuration, and more.

Updated January 2, 2018

by Kayan Azimov

· 125,203 Views · 43 Likes

How to Use Couchbase With Java

Learn how to use Couchbase with Java by creating a heroes service that will come up with a superhero's name, their powers, and more.

January 2, 2018

by Otavio Santana

CORE

· 18,411 Views · 4 Likes

12 Java YouTube Channels You Should Follow in 2018

Do you want to stay on top of your Java game in 2018? Here are 12 YouTube channels that you should stay up to date with.

December 31, 2017

by Thorben Janssen

· 82,793 Views · 100 Likes

OWASP Dependency-Check Maven Plugin: A Must-Have

Though it's tough, this developer admits he hadn't heard of this plugin until recently. If you're in the same boat, read to get an overview of this great security tool.

December 30, 2017

by Bozhidar Bozhanov

· 18,323 Views · 5 Likes

What Is Project Amber in Java?

Curious about Project Amber? Take a look at the ongoing effort to enhance the productivity of Java developers everywhere.

Updated December 30, 2017

by Mahmoud Anouti

· 17,697 Views · 13 Likes

Spring Boot: Unit Testing and Mocking With Mockito and JUnit

In this post we take an in-depth look at how to create effective unit tests in Spring Boot using JUnit and Mockito. Read on for the details!

December 29, 2017

by Ranga Rao Karanam

· 243,957 Views · 11 Likes

How to Set Up JDK and Tomcat on Ubuntu

This quick tutorial will guide you in setting up the latest JDK and Tomcat on Ubuntu, complete with the necessary code and commands.

December 29, 2017

by Mafijur Rahman

· 8,662 Views · 6 Likes

OTP (One Time Password) Using Spring Boot and Guava

Read on to learn how to add One Time Password authentication to your web application using Spring Boot and Google's Guava library.

December 28, 2017

by Shrisowdhaman Selvaraj

· 124,252 Views · 23 Likes

OOP Concepts for Beginners: What Is Polymorphism

Polymorphism can be an elusive concept to pin down, so let's take a look at what it is and what the different types are.

December 28, 2017

by Thorben Janssen

· 28,658 Views · 29 Likes

Creating a Simple Web App With Java 8, Spring Boot, and Angular

In this tutorial, we'll look at how developers can combine multiple technologies to make a web application. Read on to get started!

Updated December 27, 2017

by Ashish Lohia

CORE

· 392,422 Views · 39 Likes

IoC vs. DI

Some people use the terms Inversion of Control and Dependency Injection interchangeably. Let's see how they're different and how they can work together.

December 27, 2017

by Francisco Alvarez

CORE

· 141,003 Views · 106 Likes

Random Number Generation in Java

Need some randomness in your numbers? Check out a few different techniques you can avail yourself of to create random (or mostly random) numbers in Java.

December 26, 2017

by John Thompson

· 1,267,696 Views · 31 Likes

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