Java DevOps
Organizations working on the Java EE stack are trying harder than ever to make Java DevOps a reality. By bringing together development and operations teams, Agile software development is streamlined, test automation becomes easier to achieve and the implementation of continuous integration (CI) and continuous delivery (CD) streams can become a reality when Java DevOps is done right.
Top Stories
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Tip
18 Apr 2025
Agile vs. Waterfall: What's the difference?
Is change good or bad? The manner in which you embrace change might influence whether you prefer Waterfall or Agile methodologies. Here we compare the two approaches. Continue Reading
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Tip
19 Jan 2023
Who should be the product owner in Scrum?
Who should be the Scrum product owner and how does an organization choose the right person for that job? It's not an easy decision, but it's a critical one for all Scrum projects. Continue Reading
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Blog Post
30 Jan 2025
How to delete a local Git branch
Here's a quick example of how to delete local Git branches from your workstation without deleting remote branches in your GitHub or GitLab repos. Continue Reading
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Blog Post
01 Jan 2025
How to install Java 21 on Ubuntu
Here's the easiest way to install Java on Ubuntu with apt. Follow these steps and you'll get the JDK installed in no time, and be ready to use your Java on Ubuntu setup right away. Continue Reading
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Blog Post
02 Oct 2024
Imperative Git commit messages in the active tense or mood
The pundits all say Git commit messages should be written in the imperative tense. I say that's outdated thinking. Continue Reading
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Blog Post
30 Jan 2024
How to setup SSH in GitHub by example
Here's a very quick example of how to setup GitHub SSH keys and use them to perform Git clone, push and pull commands over a securely configured SSH connection. Continue Reading
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Blog Post
19 Jan 2024
System, global and local Git config files on Windows and Linux
Ubuntu, Linux and Windows Git configuration files are an unwieldy mess. Or at least is seems that way when you realize it's contained in three uniquely named files and spread across three or four ... Continue Reading
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Blog Post
17 Dec 2023
How to code your first Mojo program
There's a new programming language named Mojo in the works that is set to revolutionize AI and ML while fixing all that's wrong with Python. Here is how to code your first Mojo program. Continue Reading
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Blog Post
05 Sep 2023
How to install Git on Windows
Need to install Git on Windows? This quick Git install tutorial shows you how to quickly download, install and configure Git on Windows 10. Continue Reading
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Blog Post
01 Sep 2023
git clean: How to remove untracked files in Git
Developers can use the git clean command to delete untracked files in a working tree and remove what they don't need from a local repository. Here is how to issue the command and some helpful tips ... Continue Reading
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Blog Post
31 Aug 2023
Git push new local branch to remote
Did you create a new Git branch? Need to push that local Git branch to a remote repo like GitHub, BitBucket or GitLab? This example shows you how to git push new local branches remotely. Continue Reading
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Blog Post
21 Apr 2023
Top 10 Chrome extensions for web developers
Installation of the right browser plugins can make a programmer significantly more productive. Here are 10 productivity boosting-Chrome extensions for web developers to install. Continue Reading
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Blog Post
29 Mar 2023
Why is the Bootstrap grid system 12 columns wide?
Ever wonder why they created a 12-column Bootstrap grid system, and not 10 or 15? It's the same reason there's 60 seconds in a minute, or 360 degrees in a circle. Continue Reading
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Blog Post
10 Mar 2023
Who is required to attend the Daily Scrum?
The Scrum master is not required to attend the daily Scrum. Neither is the product owner. Here's why only the developers are required to attend the daily Scrum. Continue Reading
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Blog Post
06 Mar 2023
Advantages of Java
There are almost too many advantages of Java to describe, but this top 10 list covers the key Java advantages that drive the ongoing adoption of the JDK and the JVM. Continue Reading
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Blog Post
04 Mar 2023
Disadvantages of Java
The benefits of the Java language and platform abound, but there are disadvantages to Java as well. Here we examine the top Java disadvantages and evaluate how critical these problems really are. Continue Reading
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Blog Post
03 Mar 2023
The 7 benefits of Java
The 7 benefits of Java that Sun Microsystems bragged about in 1995 are just as relevant today as they were then. Here's a look at 7 Java benefits and an analysis of what they mean for software ... Continue Reading
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Blog Post
02 Mar 2023
Java double vs float: What's the difference?
What's the difference between double vs float data types? In this quick tutorial we show how float and double Java types differ, along with guidance on how to choose one over the other. Continue Reading
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Blog Post
28 Feb 2023
Top 10 software myths debunked
Software myths abound in the IT industry. Here are the top 10 software devlepment myths and misconceptions, along with a full debunking of these mythical ideas. Continue Reading
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Blog Post
28 Feb 2023
2023 Java roadmap for developers
This 2023 Java roadmap for developers will help guide your path as you build the skills required to go from a beginner programmer to an advanced software developer. Continue Reading
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Blog Post
26 Feb 2023
How to use JShell in Java
If you haven't used Java's JShell yet, you're missing out. Here's a quick Java and JShell tutorial to get you started. Continue Reading
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Tip
19 Jan 2023
Who should be the product owner in Scrum?
Who should be the Scrum product owner and how does an organization choose the right person for that job? It's not an easy decision, but it's a critical one for all Scrum projects. Continue Reading
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Blog Post
10 Jan 2023
Best Scrum developer certifications
In a competitive developer job market, it is important to set your resume apart. Here are the top five Scrum developer certifications software developers will want to have on their resumes. Continue Reading
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Blog Post
09 Dec 2022
What is an octothorpe? Cool tech words and computer science slang
What is an octothorpe? How is the 'spaceship operator' used? And will saying 'shebang' get me in trouble? Here are 11 slang computer science words every developer in tech needs to know. Continue Reading
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Tip
09 Dec 2022
Scrum vs. Kanban: What's the difference?
When you compare Scrum vs. Kanban, you realize there are as many similarities as there are differences. Here we help you choose between these two Agile frameworks. Continue Reading
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Blog Post
05 Oct 2022
Taking REST APIs to the next level with hypermedia and HATEOAS
Adding hypermedia links to REST APIs expands resource data abilities and improves users' experience. This walkthrough explains the ins and outs of REST APIs with hypermedia and the HATEOAS technique. Continue Reading
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Quiz
29 Sep 2022
10 tough Agile quiz questions for software developers
Ready to embrace Agile for your software development projects? Take this quiz to gauge your grasp of the basics of Agile, and the core values and principles of the Agile Manifesto. Continue Reading
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Blog Post
28 Sep 2022
Understanding the Kubernetes Container Runtime Interface
The Kubernetes Container Runtime Interface adds options beyond Docker for container orchestration. Here's a rundown of how Kubernetes and the CRI work. Continue Reading
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Feature
21 Sep 2022
Forward proxy vs. reverse proxy: What's the difference?
Forward and reverse proxies secure and isolate resources that reside on a private network, but they play different roles in modern enterprise architectures. Continue Reading
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Blog Post
13 Sep 2022
Hierarchical Kubernetes namespaces explained by example
Confused by hierarchical namespaces in Kubernetes? In this Kubernetes tutorial we'll examine what hierarchical namespaces are, how to add them to a Kubernetes cluster and then how to use them. Continue Reading
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Blog Post
02 Sep 2022
10 Agile takeaways from the latest Scrum Guide
Learning the Scrum basics? Need a quick Scrum overview? Here are 10 interesting facts from the latest Scrum guide that every Agile developer needs to know. Continue Reading
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Blog Post
10 Jul 2022
What is a Scrum commitment?
What are the 3 Scrum commitments and why do we need them? Most importantly, Scrum commitments provide transparency and focus, but their role in Agile software development goes far beyond that. Continue Reading
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Blog Post
08 Jul 2022
Agile vs DevOps: What's the difference?
Wondering how to choose between Agile or DevOps? You're in luck, but it's not about DevOps versus Agile. It's about how Agile and DevOps work together. Here we examine the similarities and ... Continue Reading
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Blog Post
12 Jun 2022
How to setup the Nginx Proxy Manager Docker example
Learn how to setup and install the Nginx Proxy Manager from Docker Hub. This simple tool greatly simplifies the configuration of Nginx reverse proxy servers, asset caching, host redirecting and SSL ... Continue Reading
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Blog Post
11 Jun 2022
Example Java String palindrome checker program using recursion
There are many ways to write a Java String palindrome program. In this Java palindrome example we demonstrate recursion and how the use of loops, arrays, Scanner and the reverse method can improve ... Continue Reading
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Blog Post
10 Jun 2022
Java array size, length and loop examples
How do you find the size of a Java array? How do you size Java arrays when you create them? And is the Java array size fixed? Here we answer all of your questions about the size of a Java array. Continue Reading
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Blog Post
10 Jun 2022
How do I install Java?
To install Java the right way, there are a few things to know. Just sort out the perquisites and you'll be able to install Java and the JDK in no time flat. Continue Reading
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Blog Post
09 Jun 2022
How to run a Jar file
How do you run a JAR file on Windows, Mac or Linux? Double click the JAR? Run the JAR at the command line? Several approaches will work if you have Java or the JDK installed. Continue Reading
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Blog Post
05 Jun 2022
How do I 'docker copy' a file from container to host?
Here's a quick example of how to copy a file inside a Docker container to the local filesystem of the host machine. With the ID or name of the container in hand, a Docker file copy operation is an ... Continue Reading
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Blog Post
04 Jun 2022
How to install Docker and docker compose on Ubuntu
Modern day development happens in containers. Which is why it's imperative that you know how to setup and install Docker and docker compose on your local Ubuntu workstation. In this tutorial, we'll ... Continue Reading
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Blog Post
28 May 2022
How to setup an Nginx reverse proxy server example
Here's a quick tutorial to setup an Nginx reverse proxy server. This example uses an Apache Tomcat server but the config settings apply for other backend app servers such as Node, Express, ... Continue Reading
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Blog Post
27 May 2022
How to setup PHP on Nginx with fastCGI (PHP-FPM) example
Here's a quick tutorial on how to setup Nginx with PHP support. The key? The installation of fastCGI, aka PHP-FPM, so Nginx can serve PHP files to clients. Continue Reading
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Blog Post
24 May 2022
Create a GitHub Personal Access Token example
This walkthrough shows how to generate a GitHub personal access token, and use the GitHub personal access token to clone, pull, fetch and push changes back to your GitHub repository. Continue Reading
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Blog Post
24 May 2022
How to customize Git Bash Shell prompt settings
Want to style and customize your user and hostname properties that display in the Git Bash prompt? This quick example shows you how to quickly customize your Git Bash terminal window. Continue Reading
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Blog Post
20 May 2022
Docker run vs docker-compose: What's the difference?
Both docker run and docker-compose can be used to start Docker containers, but there are key differences between the two. Here we explore the differences between docker-compose and docker run, and ... Continue Reading
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Blog Post
19 May 2022
Git commit config and credential confusion causes consternation for customers
A user who accidentally provides a GitHub username and password instead of the Git username and email address may have inadvertently published their security credentials to the world. Continue Reading
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Blog Post
18 May 2022
Dockerfile vs docker-compose: What's the difference?
What's the difference between Dockerfile and docker-compose? These simple examples compare Dockerfile, the docker-compose.yaml file and important commands to build Docker images and run Docker ... Continue Reading
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Blog Post
17 May 2022
How to setup an Apache reverse proxy server example
Most enterprise architectures use Apache as a reverse proxy, but it is not configured for that by default. In this quick tutorial, we show you how to configure an Apache reverse proxy for backend ... Continue Reading
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Blog Post
17 May 2022
How to use docker-compose with Apache httpd example
Want to configure and run an Apache httpd Docker container to serve website files from a local system? This example shows the best way to do that, using the "docker-compose" command and YAML file. Continue Reading
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Blog Post
17 May 2022
Deploy your website with a Docker Apache httpd container volume
The best way to run Docker's httpd Apache web server image is to map a volume that points to local files on your hard drive. This example shows you how to run Apache in Docker without the need to ... Continue Reading
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Blog Post
17 May 2022
How to dockerize Apache httpd websites example
Need to dockerize Apache? Want to build a custom Docker httpd image that hosts your website? Here's a simple Apache Dockerfile example to build a custom httpd Docker image for your website. Continue Reading
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Blog Post
18 Apr 2022
Being Agile vs. doing Agile: What's the difference?
What's the difference between being Agile and doing Agile? It's subtle, but it's significant. Here we compare them and show you how to both be Agile and do Agile the right way. Continue Reading
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Blog Post
14 Feb 2022
Noon is not 12am. Midnight is not 12pm. Code appropriately.
The terms 12am and 12pm make no logical sense. Neither one is noon or midnight. Remove the 12am vernacular from your applications. Users will thank you. Continue Reading
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Blog Post
26 Jan 2022
How to create an AWS account alias
Need to create, change or rename an AWS account alias? It's not too hard to do, and your users will thank you. Here are the steps to do it. Continue Reading
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Blog Post
23 Jan 2022
Comparing Rest vs GraphQL on performance and ease of use
The problem with RESTful web services that use JSON or XML as a data exchange is bloat and verbosity. Compare REST vs GraphQL performance if you want to simplify your web API development. Continue Reading
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Blog Post
21 Jan 2022
Why we use ./ (dot slash) to run Linux scripts?
Ever wonder why you need a ./ before a Unix shell script or command of your own in order to run it? Here's what the Linux dot slash does and why Unix systems require the ./ syntax. Continue Reading
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Blog Post
21 Jan 2022
Fix Apache's 'ServerRoot Must be a Valid Directory' error quickly
Here are three easy ways to fix Apache's ServerRoot Must be a Valid Directory error. Any of these remedies will get your Apache HTTP server running again. Continue Reading
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Blog Post
19 Jan 2022
Principle of least privilege examples & best practices
We see examples of the principle of least privilege everywhere in our daily lives. What does the principle of least privilege mean as applied to security in software development and DevOps? Continue Reading
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Blog Post
15 Jan 2022
How to install Apache's Web Server on Windows 10 quickly
Let me step you though the installation of Apache's Web Server on Windows 10. You'll learn how to install Apache 2.4 on Windows, and avoid common httpd config errors. Continue Reading
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Blog Post
14 Jan 2022
Top 5 AWS root account best practices
The credentials of your server's super user must be protected at all costs. Here are five AWS root account best practices to protect yourself from being hacked. Continue Reading
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Blog Post
14 Jan 2022
BitBucket SSH key generation tutorial
This simple and straight-forward example shows you how to quickly configure BitBucket SSH keys, so you can connect Git to BitBucket with a secure shell (SSH). Continue Reading
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Blog Post
14 Jan 2022
How to create and run a shell script in Linux and Ubuntu
It's not hard to create and run a shell script in Linux distros like Ubuntu, but there are a few non-obvious pitfalls you need to avoid. Here's a quick example of how to execute a script in Linux. Continue Reading
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Blog Post
13 Jan 2022
Git securely with a GitHub SSH URL example
Where do you find the GitHub SSH URL? How do you use it to clone or pull from your remote GitHub repository? This quick Git tutorial shows you everything you need to know about the GitHub SSH URL. Continue Reading
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Blog Post
11 Jan 2022
How to SSH into GitHub on Windows example
Here's a quick tutorial to connect to GitHub with SSH on Windows. It's easy, and you'll establish a GitHub SSH Windows connection with Git in no time. Continue Reading
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Blog Post
11 Jan 2022
A quick GitHub SSH clone example
Here's a quick example of how to perform a GitHub SSH clone operation. In just five minutes, learn how to create SSH keys, configure them in GitHub and perform the GitHub clone with SSH keys in Git. Continue Reading
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Blog Post
08 Jan 2022
How chmod numbers work explained by example
Don't let yourself be intimidated by chmod numbers and permissions. Here's a quick and easy to understand explanation of how chmod permission numbers work in Linux. Continue Reading
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Blog Post
05 Jan 2022
Was GitHub's password authentication removal an overstep?
Was GitHub's removal of password based authentication a security overstep? If it makes it harder for developers to get started with Git and GitHub, it was. Continue Reading
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Blog Post
02 Jan 2022
Git and GitHub SSH KeyGen by Example
Here's a quick example of how to securely connect Git to GitHub with SSH KeyGen produced secure shell keys on both Windows and Linux. Continue Reading
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Blog Post
31 Dec 2021
How to quickly change your branch in Git
These Git branch change examples will help you quickly address the specific version control challenge you are trying to solve, be it a branch renaming or a switch, list and checkout of existing ... Continue Reading
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Blog Post
29 Dec 2021
Fix Putty's 'Key Exchange Algorithm Agreement' error
Ever encounter the 'Couldn't Agree a Key Exchange Algorithm' error when you fail to connect with Putty to an AWS EC2 instance or other server-side resource? This is the first fix you should try. Continue Reading
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Blog Post
06 Dec 2021
Learn how Kubernetes Operators work from this example
Kubernetes (K8S) has become a very popular technology for working with distributed applications that run on the internet. K8S is intended to support an enormously large number of Linux containers ... Continue Reading
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Blog Post
29 Nov 2021
Kubernetes vs Docker Compose: What's the difference?
Confused between the difference between Kubernetes and Docker compose? Here we explain how the two DevOps construct are similar, and how they are different. Continue Reading
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Blog Post
29 Nov 2021
How to delete a Git repository
Trying to delete a local Git repository but the DVCS system still persists? Here's a quick example of how to locally remove a Git repo permanently and completely. Continue Reading
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Blog Post
29 Nov 2021
How to import a Maven project from GitHub into Eclipse
Here's a quick tutorial that shows you how to import a GitHub hosted Maven project into the Eclipse IDE. Continue Reading
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Blog Post
29 Nov 2021
What is the difference between Docker and containerd?
What's the difference between containerd and Docker? Here we take a look at how these two cloud-native Kubernetes friendly technologies differ and compare. Continue Reading
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Blog Post
29 Nov 2021
What is the difference between kubectl and kubelet in Kubernetes?
Are you working in a cloud-native, Docker and Kubernetes based environment and you're wondering what the difference is between kubelet and kubectl? Here we clear up the kubectl vs kubelet confusion. Continue Reading
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Blog Post
02 Nov 2021
How to delete all Git branches except master or main example
Here is a quick Git command to delete all branches except master or main from your local repository. It's a nice way to clean up your workspace after a milestone or a sprint. Continue Reading
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Blog Post
31 Oct 2021
What is the difference between a Docker image vs a container?
Wondering what the difference is between a Docker image and container? Here we make the Docker container vs image comparision and show you how the two concepts differ. Continue Reading
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Blog Post
31 Oct 2021
How to Git Uncommit Your Last Git Commit
Need to do a git uncommit to the last commit you were working on? Learn how to quickly uncommit files updates and changes in Git. Continue Reading
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Blog Post
28 Oct 2021
How to delete a remote Git branch
Learn the command to properly delete remote Git branches from SaaS offerings such as GitHub and GitLab, while also deleting local remote tracking branches as well. Continue Reading
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Blog Post
25 Oct 2021
Fix Git's "fatal: no upstream branch" error quickly example
Here's a quick fix for Git's "fatal: The current branch has no upstream branch" error, along with a brief explanation of why this happens when you push a new Git branch to GitHub, GitLab or BitBucket. Continue Reading
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Blog Post
22 Oct 2021
How to remove Git branches from your repository
Need to permanently remove a Git branch locally? What about the remote tracking branch? Or maybe someone removed a Git branch on GitHub or GitLab and you need to synchronize with the server? Here ... Continue Reading
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Blog Post
11 Oct 2021
4 ways to create a Git branch quickly by example
Forgotten the Git branch create command? Here we'l show you four different ways to create a Git branch, be it from the current branch, from a tag or from a commit id. Continue Reading
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Blog Post
06 Oct 2021
How to tag a Git commit id by example
Here's a quick example of how to tag a specific commit id in Git. This is perfect if an older commit id requires a tag but was not originally given one. Continue Reading
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Blog Post
02 Oct 2021
Create a new Git branch with current local changes saved by example
Did you update some code in the wrong Git branch? Here's how to save those local changes in a newly created Git branch, and clean up the original branch in the process. Continue Reading
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Quiz
08 Sep 2021
A monolithic vs. cloud-native migration quiz for developers
Are you prepared for a cloud-native migration? This quiz contrasts the microservice vs. monolithic approaches to software development and will help gauge your knowledge. Continue Reading
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Blog Post
31 Aug 2021
When to you Docker vs Podman? A developer's perspective
Docker and Podman play two very separate and distinct roles in the modern DevOps pipeline. Here we compare Docker and Podman and show you how to choose which one is best for you. Continue Reading
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Blog Post
31 Aug 2021
Fix GitHub's 'support for password authentication was removed' error
Frustrated by GitHub's 'support for password authentication was removed' error? Here's how to fix it by creating a personal access token in GitHub. Continue Reading
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Answer
28 Jul 2021
Git fork vs. clone: What's the difference?
Both Git fork and clone create copies of a repository, but they offer drastically different levels of access, isolation and control over the target repo. Continue Reading
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Answer
27 Jul 2021
Kubectl apply vs. create: What's the difference?
The Kubernetes command-line tool, kubectl lets you control your Kubernetes clusters. But two of its operations -- apply and create -- can often be confused. Continue Reading
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Answer
26 Jul 2021
Vagrant vs. Docker: How these cloud-native tools differ
Both Docker and Vagrant are important parts of a cloud-native stack, but they have very different roles when it comes to supporting containers and VMs within the CI/CD process. Continue Reading
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Quiz
20 Jul 2021
Introduction to Docker quiz
These Docker questions and answers will test your knowledge of the fundamentals of Docker, but it won't be easy. Take this quiz and see if we can stump you. Continue Reading
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Blog Post
20 Jul 2021
How to fork a Git repository
Looking for the fork command in Git? Well, it doesn’t exist. Here we'll show you how to fork a Git or GitHub repo on your own. Continue Reading
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Blog Post
19 Jul 2021
How to download an older, specific version of UiPath Studio
Want to stop UiPath Studio from updating to the latest release all the time? Here's how to download and install a specific version of UiPath Studio. Continue Reading
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Blog Post
02 Jul 2021
How to download and install UiPath Studio
It’s actually a bit tricky to install UiPath. This UiPath Studio install tutorial shows you how to find the download link and the right version. Continue Reading
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Blog Post
30 Jun 2021
How to pass variables as UiPath arguments example
How do you use a variable from one UiPath sequence in another? This tutorial will teach you everything you need to know about passing data between workflows. Continue Reading
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Blog Post
28 Jun 2021
How to use the UiPath Switch activity
While the UiPath If activity is great for simple logic, multi-branching demands the UiPath Switch activity. Learn how to use it to perform conditional logic. Continue Reading
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Blog Post
25 Jun 2021
UiPath If-Then conditional statements
Learn how to use the conditional UiPath If activity to create branches of logic in your RPA programs. This quick UiPath If-Then example will show you how. Continue Reading
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Blog Post
20 Jun 2021
What is a Git fork? Meaning, definition and a Git Fork example
Need to fork GitHub at the command line? This quick Git tutorial will show you how to install the GitHub CLI tools and fork a repository in the shell. Continue Reading
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Feature
04 Jun 2021
Learn how to save to local storage in this git stash tutorial
Sometimes developers need to jump off the main distributed development branch to local storage. Follow this git stash tutorial to learn the ins and outs of this Git command. Continue Reading
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Blog Post
02 Jun 2021
Quickly create a Git bare repo with init or clone example
There are two ways to create a bare Git repo -- a bare Git clone or a Git init bare. This git bare repo tutorial will show you how to perform both. Continue Reading
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Opinion
27 May 2021
Lessons from Fluentd: How to name a project in the SEO age
Dreaming of wide-scale adoption for your new project? You'll need the right name. Here's how Fluentd got its name, and what you can learn from its SEO-driven process. Continue Reading