Videos

Java command-line interface tools every JDK developer should know

These five JDK tools -- javac, javap, jstat, jdeps and jar -- should be on the must-know list for every developer to help comprehend the underlying code in a project.
The top Java deployment tools to use on your next project

Java application deployment tools such as Maven and Gradle can be beneficial for your IT team. Compare those and other options, along with frameworks, to ease this process.

JDBC in Java: 5 facts to know before you begin

Are you new to Java programming? Here are five interesting facts about the JDBC API and what you need to know about it to ease your development pathway.
How to create a private GitHub repository example

The private repository feature is now available in the GitHub free tier. Here's how to create and clone a repository without error messages to derail development.
JDBC vs. ODBC: What's the difference between these APIs?

There are more similarities between ODBC and JDBC than there are differences. But, the differences are significant. Here we highlight them.
Use Tomcat, Eclipse to create a JAX-RS REST web service

Use this step-by-step tutorial with an example rock-paper-scissors game to understand how to create and take advantage of RESTful web services with Eclipse and Tomcat.
IBM Watson Content Hub has problems before you even start

IBM's Watson might make waves on certain TV game shows, but it can't even get some simple basic forms correct, which could sour potential developers before they even start.
Follow this Java screen scraper example to aggregate content

Follow this JSoup example of screen scraping to aggregate data from live webpages, and generate results that can be easily identified and organized.
Don't git revert that last commit, git reset instead

Developers should only use git revert if they need to reverse out a specific change in their code. To simply undo a previous commit to a shared repository, use git reset instead.
Jenkins creator explains why a successful build job is blue

Instead of the often-recognized red, yellow and green layout for success and failure, Jenkins replaced green with blue. If you've ever wondered why, here is your answer.
Tough sample GitHub interview questions and answers for job candidates

If you're a developer in search of a DevOps job, you'll need to address these Git and GitHub interview questions and answers. And don't forget about distributed version control systems either.
Install the Jenkins Artifactory plugin in 5 easy steps

Jenkins and Artifactory integration can be a major timesaver for DevOps engineers. Follow these five steps for an easy plugin installation in your CI/CD pipelines.
Step-by-step RESTful web service example in Java using Eclipse and TomEE Plus

In this easy-to-follow JAX-RS tutorial, we provide a RESTful web service example in Java using Eclipse and TomEE Plus, where we go from development to testing in less than 15 minutes.
4 ways to upload a JAR to a JFrog Artifactory repository

Need to upload a JAR to a Maven repository after an artifact has been built? Here, we show you four ways to upload a file to a JFrog Artifactory repository.
How to deploy Docker Hub-hosted microservices in AWS ECS

In this AWS ECS tutorial, we take a Spring Boot app contained in a Docker Hub-hosted image and deploy the associated microservices in AWS using Elastic Container Service.
How to use the Jenkins Git Plugin: Tips and tricks

Being able to pull from a source code repository is a given, but here are five features the Jenkins Git Plugin makes available to your build jobs that you didn't even know were there.
How to Git started and use the Github Desktop app tool

The GitHub Desktop client has been around for a few years now. In this GitHub Desktop app tutorial, we take a look at how well the tool performs the five basic Git commands.
Tough sample DevOps interview questions and answers to tackle

Interested in applying for that DevOps engineer position? Then take a look at these tough, sample DevOps interview questions and answers, and see how well you are prepared.
How to set up and use a JFrog Artifactory as a local Maven repository

In this Artifactory tutorial, we'll show you how to deploy JAR files to an Artifactory Maven repository. It's surprisingly simple.
Let's dispel three common Java microservices myths

It's easy to develop Java microservices, but confusion over what they are and how they work tends to muddy the waters. Here, we clarify a few myths pertaining to Java microservices.
Tough sample Jenkins interview questions and answers for DevOps engineers

Applying for an engineering job where continuous integration is part of the description? Here are 10 tough Jenkins interview questions to prepare you for the DevOps engineering interview.
SonarQube tutorial: Get started with continuous inspection

Consider this popular continuous inspection tool. In the first part of this SonarQube tutorial, we'll show you the seven deadly SonarQube metrics.
Step-by-step SOAP web services example in Java using Eclipse

There was a time when creating a SOAP web service was an arduous task. In this step-by-step SOAP web services example in Java using Eclipse, let's show how times have changed.
Maven Checkstyle Plugin example: How to enforce Java quality rules

Java Checkstyle rules can be applied to every build to ensure developers are following source code quality rules correctly. This Maven Checkstyle Plugin tutorial shows you how.
Step-by-step Spring Boot RESTful web services example in Java using STS

In a previous tutorial, we explained the basic tenets of good RESTful web service design. In this step-by-step Spring Boot restful web services example, we implement it.
A git reset hard example: An easy way to undo local commits and shift head

For those looking to undo a commit, the easiest way to do it is by using the git reset hard command. It's the easy way to reset the HEAD, the index and the working tree as well.
Jenkins parameterized build example with String and Boolean parameters

It's easy to customize your Jenkins jobs when you add parameters to the build. This Jenkins parameterized build example with Boolean and String parameters is the first step to a fresh continuous integration pipeline.
RESTful APIs tutorial: Learn key web service design principles

RESTful Java API designs shouldn't be hard to get right. This RESTful APIs tutorial shows core RESTful principles concerning URL structure and the effective use of HTTP methods.
Standardizing app staging a key benefit to a Java configuration API

Payara's Mike Croft talks about the potential benefits of making a Java configuration API a standard part of the Java EE specification.