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• How JPA EntityManager handles Hibernate transaction management

  Follow this JPA EntityManager persist example tutorial to see how it can be used for transaction management and how to save changes to the database. Continue Reading

• git stash

  Git stash is a built-in command with the distributed version control tool in Git that locally stores all the most recent changes in a workspace and resets the state of the workspace to the prior commit state. Continue Reading

• How to easily merge and resolve git stash pop conflicts

  Don't let a conflict with git stash pop derail development. Here's how to merge and resolve this issue and clean up code for proper programming. Continue Reading

• 3 ways a volunteer programmer can help in a pandemic

  DevOps pros can help local and state agencies battle COVID-19. Here are three ways they can volunteer their time during a pandemic. Continue Reading

• 3 ways to have JPA and Hibernate create tables in a database

  JPA frameworks such as Hibernate can automatically create tables. Here are three ways to have JPA and Hibernate create tables in a database. Continue Reading

• Definitions to Get Started

  • git stash
  • GraalVM
  • HTML (Hypertext Markup Language)
  • embedded Tomcat

  • Java Database Connectivity (JDBC)
  • Java virtual machine (JVM)
  • Java
  • Java Runtime Environment (JRE)

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• Simple database integration with the JPA persistence.xml file

  The persistence.xml file plays a significant role in all facets of JPA-based application development. Examine the file's properties for a simple configuration to ease development.Continue Reading

• Create a distraction free JPA and Hibernate dev environment

  A minimalistic approach is the way to go for development with Hibernate and JPA. Create a development environment with only the basics -- a JDK, Hibernate and a text editor -- to get started.Continue Reading

• Fix for the GitLab "Unable to locate package gitlab-ee" on Ubuntu 20

  If you're doing a self-hosted GitLab Ubuntu 20 install and you hit the "Unable to locate package gitlab-ee" error, here's the solution to fix the problem.Continue Reading

• 5 tool categories to build a powerful DevOps technology stack

  Want to speed application delivery and deployment? Consider adding one of these five DevOps tools and technologies to your IT department.Continue Reading

• GraalVM

  GraalVM is a tool for developers to write and execute Java code.Continue Reading

• The Git working tree, index and commit history explained by example

  This quick tutorial explains the importance of the Git working tree. With the help of the git status command, you'll become an expert on how the popular DVCS tool transforms the file system.Continue Reading

• How to change the last Git commit message quickly

  How can a developer change the message associated with the last git commit before an update? Use the following tutorial on the amend command to alter the last Git commit message.Continue Reading

• Developing a COVID-19 application? Design it the right way

  Application developers with skills and an idea could design an app to combat the virus. Follow these insights to effectively design and deploy a coronavirus-related app.Continue Reading

• How developers can volunteer during the COVID-19 pandemic

  What resources can developers offer to go against COVID-19? Explore some promising developer volunteer and open source project opportunities to see how you can help.Continue Reading

• How to refactor the God object class antipattern

  Loose coupling can inadvertently create a God object problem in an object-oriented software system. Here's how to get rid of the issue and simplify the design in five easy steps.Continue Reading

• 6 top webpage performance metrics to monitor

  Webpage performance is paramount for digital success. To monitor webpage performance, use these top six metrics.Continue Reading

• How to use the git clone command with GitHub by example

  Move code from remote-hosted version control repositories into local ones with one command. Follow this Git clone tutorial to move code into local environments.Continue Reading

• How to integrate Nexus with Jenkins for simpler builds

  Integrate Nexus with Jenkins in your local environment to simplify development and run build jobs with minimal headaches.Continue Reading

• HTML (Hypertext Markup Language)

  HTML (Hypertext Markup Language) is a text-based approach to describing how content contained within an HTML file is structured.Continue Reading

• How to create a local repository with the git init command

  Follow this git init tutorial to create a local repository, add files to the repository and perform commits on your local machine as you get started with distributed version control.Continue Reading

• How to use the git remote add origin command to push remotely

  Need to connect your local Git repository to a remote one? The git remote add command can make it happen. Developers call on it to push to GitHub and other cloud-based tools.Continue Reading

• Install Eclipse IDE on Ubuntu in 5 easy steps

  Software development is greatly simplified by an IDE, like Eclipse. In this video tutorial, we demonstrate how to install the Eclipse IDE on the Ubuntu distribution of Linux.Continue Reading

• How to use the Jenkins multi-configuration project

  In this Jenkins Matrix project plugin example, create a two-dimensional build job that runs 16 build jobs at once.Continue Reading

• Why the 8 Java primitive data types are not objects

  What's the difference between Java primitive types and objects? To start, don't classify primitive types as objects. Let's explore the 3.5 categories that primitive types fall into.Continue Reading

• A brief history of Java: How it forever changed programming

  The Java programming language is an important tool in an application developer's quiver. But Java has also undergone many changes on the road to becoming the standard it is today.Continue Reading

• How to properly perform Java String comparisons

  Don't let incorrect Java String object comparisons bog down your code. Follow this tutorial to understand the differences between =, == and .equals.Continue Reading

• Simplify a cloud-native, Spring Boot Docker deployment

  How do you deploy a Spring Boot application to Docker? It's not as complicated as you might think. Follow this example to move and test your app within a container.Continue Reading

• JDBC tutorial: Easy installation and setup with Apache Derby

  New database developers can get up to speed with this tutorial on JDBC and Apache Derby. Follow these steps to install and connect to the Derby database on your terminal.Continue Reading

• How to test and deploy WARs with Tomcat and Eclipse

  With the proper configuration and integration, it's easy to deploy WAR files from Eclipse to Tomcat. Follow these five steps that every developer should know.Continue Reading

• A simple Java 8 Predicate lambda interface with examples

  Use this Java Predicate example to help developers learn lambdas, expand functional programming and reduce code verbosity in their environment.Continue Reading

• How to run Java preview features such as JDK 13 text blocks

  Follow these five steps to enable the JDK 13 text blocks as part of the preview features in the latest Java release and use multi-line String literal in your code.Continue Reading

• Ideas on how to hold a successful code hackathon

  Want to host a hackathon? Here are some ideas on what a company can do to host an event that solves problems and reenergizes the organization. Just don't forget the food.Continue Reading

• A Jenkins tutorial for beginners with examples

  If you're ready to try Jenkins, this quick start tutorial lays out the specific steps you'll need to take to download and install the CI tool on your local machine.Continue Reading

• Is Java slow? Compared to C++, it's faster than you think

  If you find that Java is slower than other languages, such as C++, here's how to better compare the two and the major differences between compiled and interpreted languages.Continue Reading

• 5 steps for an easy JDK 13 install on Ubuntu

  Follow these five steps for an easy Java 13 installation on Ubuntu, and don't forget to set JAVA_HOME and the PATH variables.Continue Reading

• embedded Tomcat

  An embedded Tomcat server consists of a single Java web application along with a full Tomcat server distribution, packaged together and compressed into a single JAR, WAR or ZIP file.Continue Reading

• Guide to practicing cloud-native development

  In this guide, learn about cloud-native development -- what it is, how vendors try to exploit it and how to bring it to life with the help of a DevOps environment.Continue Reading

• Cloud marketplace as a service creates new dev possibilities

  A neutral cloud marketplace would allow developers to pick and choose applications, without the constraints of one cloud. What could that mean for you?Continue Reading

• Step-by-step Jenkins Tomcat deploy of a WAR file

  You can use Jenkins to deploy a WAR file to a container in your environment in four easy steps. Follow along to learn how to push your Jenkins pipeline to deploy to Tomcat.Continue Reading

• Top Java programming tools used in application development

  There's a multitude of Java tools that help the software development process. Here's a list of Java tools and technologies that every programmer should be aware of.Continue Reading

• Step-by-step Maven Tomcat WAR file deploy example

  Five simple steps are all that's needed to deploy WAR files with the Tomcat-Maven plugin. Use the following steps for a successful deployment in your environment.Continue Reading

• How to install the JDK on Windows and set up JAVA_HOME

  You have options when it comes to JDK installations on Windows and Linux. Here are some helpful tips to ensure a proper install and why JAVA_HOME can be helpful.Continue Reading

• How to use Spring Boot application.properties file to externalize configuration

  Don't wait to externalize data in your Spring configuration any longer. Master the application.properties file with this example to get more from your data.Continue Reading

• How to set JAVA_HOME in Windows and echo the result

  Set JAVA_HOME properly and echo your results with the following tidbits, and also examine how a proper PATH installation can benefit your local environment.Continue Reading

• What are the differences between EAR, JAR and WAR files?

  JAR, WAR and EAR files provide options in a Java application deployment. Let's compare these file types and determine which one is right for which environment.Continue Reading

• Best Java static code analysis tools for code quality automation

  Don't let faulty code bring down your software project. These Java code quality tools can help find and fix common errors before they become problems.Continue Reading

• 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.Continue Reading

• 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.Continue Reading

• 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.Continue Reading

• 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.Continue Reading

• Java Database Connectivity (JDBC)

  Java Database Connectivity (JDBC) is an API packaged with the Java SE edition that makes it possible to connect from a Java Runtime Environment (JRE) to external, relational database systems.Continue Reading

• Master Git basics and branch into DVCS

  This Git guide focuses on some of the most basic information and tips. With a solid foundation, developers will be better equipped to get the most out of Git and Github.Continue Reading

• Java virtual machine (JVM)

  A Java virtual machine (JVM), an implementation of the Java Virtual Machine Specification, interprets compiled Java binary code (called bytecode) for a computer's processor (or "hardware platform") so that it can perform a Java program's ...Continue Reading

• Use entropy as a service to bolster your security

  Cryptographic keys help improve security in your enterprise. Consider entropy as a way to safeguard your data and prevent hackers from picking your locks with faulty keys.Continue Reading

• Five RESTful web service client examples for developers

  Explore your web service client invocation options with these five examples that enable developers to perform this task at any stage of development.Continue Reading

• 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.Continue Reading

• 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.Continue Reading

• Java

  Java is a widely used programming language expressly designed for use in the distributed environment of the internet.Continue Reading

• Find the right model for developing AI applications

  Developing AI apps isn't a walk in the park. Here's a guideline on how it differs from traditional application development and what your IT teams need to be aware of.Continue Reading

• Java Runtime Environment (JRE)

  The Java Runtime Environment (JRE), also known as Java Runtime, is the part of the Java Development Kit (JDK) that contains and orchestrates the set of tools and minimum requirements for executing a Java application.Continue Reading

• RESTful parameters antipattern considerations for queries, paths

  Choose carefully for path and query parameters in URL design. Lackluster choices in the design phase can plague client resource access down the road.Continue Reading

• Developers find cautious optimism for serverless platforms

  Experts urge cautious optimism around serverless development. It has its benefits, but tools that don't work as expected and a developer learning curve can cause some problems.Continue Reading

• Use the Java JDeps tool to root out internal API calls

  If you have internal Java API calls in your code, it will soon stop working. Here's a way to identify those calls and replace the problematic code with options on how to fix it.Continue Reading

• Succeed with the test-first Java certification prep approach

  Java certification exam prep is an important step for anyone interested in the test. Consider a test-first approach that might help you more effectively study for the exam.Continue Reading

• 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.Continue Reading

• Java developer tutorials a popular destination for 2018 readers

  What were readers interested in during 2018? Java developer tutorials topped the list. Learn how to integrate RESTful APIs, GIT, and Jenkins CI tools.Continue Reading

• Year in review: Five topics that epitomized Java in 2018

  In 2018, we focused on what the future of Java might look like. With the IBM-Red Hat merger and the ascension of DevOps, the life and times of the Java developer are changing.Continue Reading

• Why there's not really a best first programming language to learn

  Some consider Java to be the best first programming language for developers to learn. But does it really matter? Most languages are made up of the same building blocks.Continue Reading

• Static analysis of Java via the Checkstyle plugin for Eclipse

  The best way to preserve your code quality is to routinely run static code analysis from your IDE. Here's a tutorial on how to do this with the Checkstyle plugin for Eclipse.Continue Reading

• The 4 essential Java cyclomatic complexity testing tools

  Code that's less complex is easier to troubleshoot and maintain. If developers can calculate code cyclomatic complexity metrics, they have a playbook to tackle the testing phase.Continue Reading

• Git vs. GitHub: What is the difference between them?

  What are Git and GitHub? Are they actually the same thing? In this comparison article, we compare Git vs GitHub and examine the differences between the tools, like who maintains them and how easy they integrate with other tools.Continue Reading

• This history of GitHub and Java's role in it

  Ruby played a big role in the history of GitHub, but Java now plays a bigger part. At Oracle Code One, GitHub engineering manager Rafer Hazen provided plenty of reasons why.Continue Reading

• 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.Continue Reading

• 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.Continue Reading

• Java Development Kit (JDK)

  The Java Development Kit (JDK) provides the foundation upon which all applications that are targeted toward the Java platform are built.Continue Reading

• How to become a good software architect in 13 steps

  It's not easy to find your role in an IT enterprise setting. But if you can follow these 13 steps on how to become a software architect, you'll be well on your way to success.Continue Reading

• 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.Continue Reading

• How to use the SonarQube Maven Plugin for continuous inspection

  Incorporate this SonarQube Maven Plugin into your builds and you will be able to easily set up continuous inspection of code quality on your Java projects.Continue Reading

• 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.Continue Reading

• Nexus repository manager tutorial: Get started with the OSS Maven tool

  Looking at configuring your own local Maven repository? Here's a Nexus repository manager tutorial that will help you get started with Nexus OSS v2.Continue Reading

• 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.Continue Reading

• Jenkins Git integration: GitHub pull request via the Git plugin

  This Jenkins Git integration tutorial demonstrates how to create a freestyle build job that performs a Jenkins GitHub pull request. It's an example of the Jenkins Git plug-in in action.Continue Reading

• 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.Continue Reading

• 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.Continue Reading

• IT projects and software teams need to include Agile people

  Not every idea deserves equal weight in a software development project, but Agile people know that garnering input from a wide array of stakeholders is the key to success.Continue Reading

• CSS (cascading style sheets)

  This definition explains the meaning of CSS (cascading style sheets) and how using them with HTML pages is a user interface (UI) development best practice that complies with the separation of concerns design pattern.Continue Reading

• 5 basic Git commands developers must master: Tutorial with examples

  Just getting started with Git or GitHub? If so, there are five basic Git commands you need to master. This Git commands tutorial for beginners takes you through each.Continue Reading

• Jenkins environment variables list for shell script build jobs

  The Jenkins environment variables list outlines the various properties that developers can inject into advanced Jenkins shell scripts and batch programs.Continue Reading

• SOAP web services bottom-up approach example in Java using Eclipse

  It's easy to create a web service from a JavaBean. This SOAP web services bottom-up approach example in Java using Eclipse and Apache Axis will prove it.Continue Reading

• Top-down web service creation approach example in Java using Eclipse

  Creating a SOAP web service in Eclipse is easy if you have a WSDL file. This top-down web service approach example in Java using Eclipse tutorial shows how.Continue Reading

• How to deploy an embedded Tomcat server in an executable JAR with Maven example

  There's nothing magical about packaging Java web apps in an executable JAR file. This embedded Tomcat tutorial shows you how to use the Apache Maven plugin to create and run an executable JAR that has Tomcat embedded within it.Continue Reading

• How to calculate McCabe cyclomatic complexity in Java

  An understanding of how to calculate McCabe cyclomatic complexity in Java is the first step in better testing and improved software quality.Continue Reading

• Automated Java testing tools source code developers need to know

  How do Selenium, Junit, Grinder and other automated testing tools work? This guide to explains how these tools work and what you can learn from them for Java unit testing, integration testing, load testing and more.Continue Reading

• How to install Maven and build apps with the mvn command line

  If you want to learn Maven and become a build master, the first step is to install Maven, and the second is to use the mvn command-line tool to compile and package Java apps.Continue Reading

• Create your first Jenkins build job: A freestyle project tutorial for beginners

  The Jenkins freestyle job is the foundation of Jenkins CI. In this CI tutorial, we show you how to both create a freestyle job and run it using the CI tool.Continue Reading

• JavaScript

  JavaScript is a programming language that started off simply as a mechanism to add logic and interactivity to an otherwise static Netscape browser.Continue Reading

• Use the Jenkins OAuth plug-in to securely pull from GitHub

  The easiest way to securely push code to your remote GitHub repository from your continuous integration server is to use the Jenkins OAuth plug-in. This tutorial shows you how.Continue Reading

• A side-by-side comparison of MongoDB vs Cassandra databases

  How do you choose one NoSQL database over another? Expert Christopher Tozzi explains the difference between MongoDB and Cassandra.Continue Reading

• Rust and Python top list of most popular development languages

  A new Stack Overflow survey of over 100,000 developers indicated Java and JavaScript are not as popular as they had been before. Find out what developers really want to program with.Continue Reading

• Why the Waterfall or Agile debate will be around forever

  Which is the right methodology to use for your project: Waterfall or Agile? The industry may be at peak Agile, as the practicality of Waterfall is winning over more converts.Continue Reading