Tech Videos

Externalize Spring Boot Settings with ConfigurationProperties

See how application.properties values become Java fields, lists, maps, and nested configuration objects in a Spring Boot application.

Spring

Learn Spring Boot Actuator for Runtime Monitoring

Configure Actuator dependencies and endpoints, inspect application metrics, enable the stop endpoint, and build custom Actuators.

Spring

Configure Jenkins Matrix Builds for Parallel Jobs

This video tutorial shows how Jenkins multi-configuration projects use axes, Maven, and parameterized stages to run 16 related builds.

DevOps

Prepare for GitHub Questions in Your Next DevOps Interview

Test your knowledge of GitHub features, Git workflows, repository management, and common integrations before a DevOps job interview.

DevOps

A Beginner's Guide to RPA Automation with UiPath

Explore how developers identify automatable processes, build UiPath workflows, create robots, and manage execution through Orchestrator.

Other

Simplify JPA Access with a HibernateUtil Helper Class

This video demonstrates how to centralize EntityManagerFactory access, transaction handling, and Hibernate Session management for cleaner Java persistence code.

Spring

How to Host a Personal Website with GitHub Pages

This tutorial explains how to create a GitHub Pages repository, configure its branch, publish static web resources, and support Google indexing.

DevOps

Four Methods for Deploying JAR Files to Artifactory

Learn how manual uploads, curl and REST APIs, Maven plugins, and Jenkins automation can deliver artifacts to a JFrog Artifactory repository.

DevOps

How Java Constructor Overloading Works

See how overloaded constructors provide flexible initialization and how the this() method reduces duplicate code in a Java class.

Spring

Five JDBC Facts Every Java Beginner Should Know

A concise introduction to JDBC terminology, database compatibility, connection pooling, ODBC integration, and API stability.

Spring

Build REST APIs and Microservices with Spring Boot

Learn Spring Boot REST API development through a project that covers HTTP methods, JSON data, JavaScript clients, testing, and cloud deployment.

Spring

Comparing Apache Tomcat and JBoss EAP

Explore how Tomcat and JBoss differ in enterprise Java support, licensing, administration tools, and production support.

Spring

Getting Started With Anthropic's Claude Desktop App

Follow this beginner-friendly video to install Claude Desktop, try practical prompts, and understand where LLM knowledge and context can fall short.

AI

Configure Spring Applications with XML

Explore the benefits and limitations of XML wiring, dependency injection with beans.xml, and Spring Boot integration using ClassPathXmlApplicationContext.

Spring

Creating and Cloning Private Repositories on GitHub

Follow this example to create a private repository, resolve cloning errors, and connect your local Git commands to GitHub.

DevOps

Understanding JPA EntityManager and Hibernate Transactions

See how EntityManagerFactory and EntityManager persist entities, commit changes, and roll back database transactions in Java applications.

Spring

Connect Jenkins and Artifactory for Automated Artifact Uploads

This video walks through five steps for configuring the plugin and publishing Maven JAR files from Jenkins builds to an Artifactory repository.

DevOps

Deploy a Java WAR to Tomcat with Jenkins

Follow a four-step process to configure Tomcat credentials, install the Jenkins deployment plugin, build the WAR, and verify the deployed application.

DevOps

Ten Challenging DevOps Interview Questions, Explained

Review practical answers about DevOps tools, continuous integration and delivery, automation, performance metrics, culture, and microservice development.

DevOps

Build a Java MCP Server with Spring Boot

This hands-on video explains LLM limitations and shows how to expose organization-specific data and tools to Cursor AI through Model Context Protocol.

AI

How to Use Git Stash to Shelve and Reapply Changes

See a practical Git workflow for temporarily storing experimental changes, making commits, and restoring your work with stash apply or pop.

DevOps

Comparing Hibernate and JDBC for Java Database Access

Explore how JDBC connectivity differs from Hibernate ORM, including JPA abstraction, performance considerations, and database development tradeoffs.

Spring

Push a Local Git Repository to a Remote with Git

See how to configure origin, push local commits, handle non-empty remote repositories, and use cloning as an alternative workflow.

DevOps

Choosing Between Constructor and Setter Injection in Spring

This video explains the three Spring dependency injection approaches and why constructor injection is generally the recommended choice for Spring Boot applications.

Spring

Integrating ChatGPT into Java Applications with Spring AI

See how to configure OpenAI, call a GPT model from Spring Boot, and customize chat settings for an interactive Java chatbot.

AI

Choosing Between Java HashMap and Hashtable

See how these Java map implementations differ in synchronization, null support, performance, and recommended usage.

Spring

Understanding Git Log and Reflog

See when Git log and git reflog show different histories, and learn how resets, amended commits, cloning, and walk-reflogs affect their output.

DevOps

Rethinking the Value of Scrum's Core Principles

An Agile critique of openness, respect, courage, focus, and commitment, with ideas for making Scrum guidance more scientific and practical.

Agile

Deploy a Static Website Using Amazon S3 and Route 53

Follow the main AWS setup steps for uploading website files, configuring public access, enabling S3 hosting, and connecting a custom domain.

DevOps

How Tomcat and Jetty Differ as Java Application Servers

This comparison explores the strengths, tradeoffs, performance considerations, and deployment scenarios that can guide a Tomcat or Jetty choice.

Spring

How JPA and Hibernate Can Generate Database Tables

This video explains JPA schema-generation settings, Hibernate configuration options, and programmatic table creation with SchemaExport.

Spring

Five Java Tools for Automated Code Quality Checks

See how Checkstyle, PMD, FindBugs, JaCoCo and SonarQube detect coding errors, measure coverage and support quality automation.

Spring

Build a Java REST API with Spring Boot

See how to create, annotate, run, and test a Spring Boot REST service with JSON output, query parameters, HTTP methods, and cURL.

Spring

A Tutorial for Running Your Own Bluesky PDS

Set up a Personal Data Server on Ubuntu, connect it to the decentralized AT Protocol network, and log in to Bluesky with your own domain.

DevOps

Use Git Reset to Undo Your Last Commit

See how hard and soft resets differ from git revert when correcting a recent commit and preserving a clean project history.

DevOps

Understanding Spring Boot and Spring MVC

This video explains how Spring Boot streamlines Spring application development and how Spring MVC provides web and REST API capabilities.

Spring

Understanding the Difference Between an MVP and a Prototype

Explore how prototypes, proofs of concept, and MVPs differ in purpose, scope, quality, development timelines, and market readiness.

Other

Working with Java 8 Predicates, Lambdas, and Streams

See practical Predicate examples that show how interfaces, lambda expressions, and stream filtering can make Java code more concise.

Spring

Ten Ideas for a Future Scrum Guide Revision

Darcy DeClute discusses possible changes to Scrum, from clearer sprint goals and impediment guidance to terminology and framework definitions.

Agile

Configure JPA Database Integration with persistence.xml

Learn how persistence.xml connects JPA applications to databases, manages entities, configures Hibernate, and supports performance and test setup.

Spring

A Beginner's Guide to Using Bluesky Social

See how to join Bluesky, personalize your account, build custom feeds, interact with users, and manage unwanted posts.

Other

Prepare for the AWS Cloud Practitioner Exam With 65 Questions

Review practice questions on core AWS services and cloud concepts before scheduling the Certified Cloud Practitioner test.

Skills

Practice for the Scrum Product Owner Certification Exam

This video explains 40 difficult exam questions, answer strategies, and key Scrum concepts including product ownership, events, commitments, values, and pillars.

Skills

Prepare for Jenkins Interviews with 10 Challenging Questions

Review answers covering Jenkins CI/CD, pipelines, security, agents, backups, environment variables, and Git webhook triggers.

DevOps

Apache Tomcat and Apache HTTP Server Compared

Understand how these Apache projects differ in content delivery, Java requirements, three-tier architecture, deployment artifacts, and common alternatives.

Spring

Understanding the Differences Between JDBC and ODBC

Explore how these database connectivity APIs handle languages, drivers, SQL operations, performance, and compatibility with relational database systems.

Spring

Developer or DevOps Engineer: Understanding the Key Differences

Explore how software development and DevOps responsibilities differ, from coding and platform specialization to automation, monitoring, and release management.

DevOps

Clone a GitHub Repository with Git in Three Steps

Follow a practical example using the git clone command to copy a remote repository, preserve its history, and confirm the local files.

DevOps

Set Up Spring Boot Development with Spring Tools 4

This video walks through installing the Eclipse-based Spring Tools Suite, creating a Maven Spring Boot app, and testing the setup with a RESTful API.

Spring

MySQL InnoDB and MyISAM: Which Engine Fits Your Data?

Compare transactional integrity, performance, locking, full-text search, and specialized use cases for MySQL InnoDB and MyISAM storage engines.

Other

Create a Local Git Repository with git init

Learn how to initialize a repository, verify the .git folder, stage files, and make your first commit with Git.

DevOps

Understanding Java's static and final Constants

See how static provides class-level sharing, final prevents reassignment, and together they create Java constants.

Spring

Containerize and Deploy Spring Boot Applications with Docker

Follow the workflow for packaging a Spring Boot app as a Jar, building a Docker image, publishing it to Docker Hub, and running it locally.

Spring

How Scrum Sprint Reviews Differ From Retrospectives

Learn how these Scrum events vary in purpose, attendees, feedback, and their role in improving the product and the team's effectiveness.

Agile

Understanding the Relationship Between Agile and Scrum

See how Agile values guide software development and how Scrum provides an iterative framework for applying them in practice.

Agile

Move Your Domain from GoDaddy to Route 53

Follow the key steps for transferring a domain to AWS, updating DNS, verifying propagation, and mapping subdomains to cloud resources.

DevOps

Build and Document Python APIs with OpenAPI and Swagger

Learn to add Swagger to Flask, document REST endpoints, test APIs with Swagger UI, and generate Python applications from OpenAPI specifications.

Spring

Resolve Git Stash Pop Conflicts Without Losing Changes

Learn how to manually merge conflicted files, stage the resolution, and clean up stash history after a failed git stash pop.

DevOps

Configure Spring Boot Applications with Properties Files

Explore practical ways to manage Spring Boot settings, profiles, logging, server ports, YAML files, and deployment overrides.

Spring

Automate Bluesky Posts with Python and ATProto

Learn how the Bluesky Python SDK handles authentication, publishing posts, and retrieving URI and CID values for automation.

Spring

Integrating Nexus Repository Manager with Jenkins

See how to configure the Nexus Platform Plugin, create a Jenkins build job, and publish Maven artifacts to a Nexus repository.

DevOps

The Story Behind Jenkins' Blue Build Indicators

Learn why Jenkins uses blue instead of green for successful builds, and how its plugin architecture supports an alternative color scheme.

DevOps

Use Java JDBC with an Apache Derby Database

This video tutorial covers Derby setup, database creation, JDBC driver configuration, and Java code for inserting and querying records.

Spring

How Spring Boot Uses Inversion of Control

See how the Spring IoC container creates, provisions, and manages bean instances while keeping application business logic clean and loosely coupled.

Spring

Connect Java to SQL Server with JDBC

Learn the key steps, dependencies, connection settings, and troubleshooting tips for using JDBC with Microsoft SQL Server.

Spring

Run JDK 13 Text Blocks and Other Java Preview Features

Follow five practical steps to install the JDK, compile code with preview switches, handle warnings, and execute Java text blocks.

Spring

Learn Apache Maven to Build and Package Java Projects

This beginner-friendly video covers Maven installation, core commands, dependency management, testing, deployment, plugins, Jenkins, Docker, and cloud-native applications.

Spring

Amend the Latest Git Commit Message with Git

See how git commit --amend updates the visible message, why Git creates a new commit, and what to consider before sharing the change.

DevOps

Five Essential Java Testing Frameworks and Tools

Explore Java tools for unit, acceptance, API, UI, load, stress, and performance testing before software reaches users.

Spring

Understanding GET and POST in HTTP APIs

Explore how GET retrieves resources while POST submits data or triggers processing, and see where PUT and PATCH fit into REST API design.

Spring

Build Spring Boot Web Applications with Spring MVC

This beginner-friendly video introduces server-side rendering, request handling, data extraction, CRUD operations, and REST API development.

Spring

Installing Artifactory for Local Maven Artifact Storage

This video walks through Artifactory installation, Maven repository creation, and JAR deployment using the web interface.

DevOps

Java CLI Tools Every JDK Developer Should Master

Learn how javac, javap, jstat, jdeps, and jar help developers compile code, inspect bytecode, troubleshoot JVM behavior, and manage archives.

Spring

Understanding Liskov Substitution in Java

This video explains why inheritance alone is not enough and how Java classes can remain behaviorally compatible under the Liskov substitution principle.

Spring

Build a Local Llama App with Python and Hugging Face

This video tutorial walks through installing dependencies, downloading a model from Hugging Face, and querying TinyLlama from Python.

AI

Build JAX-RS REST Services with Eclipse and Tomcat

Follow a practical walkthrough for adding Jersey to a Tomcat project, creating REST endpoints in Eclipse, and testing GET, POST, and PUT requests.

Spring

Build a Number-Guessing Robot with UiPath Studio

Follow a beginner-friendly UiPath example that introduces variables, do-while loops, conditional logic, user input, and error handling.

Other

How Scrum Teams Use Story Points and Time Estimates

Explore the differences between relative story point estimation and hours-based planning, plus how velocity can provide flexible timeline guidance.

Agile

Set Up MySQL on Windows for Development

This video walks through installing MySQL Community Edition, configuring the Windows service, and verifying the database with MySQL Workbench.

Spring

How to Use git reset --hard to Rewind Local Git History

This Git lesson demonstrates how to reset HEAD to an earlier commit and restore the working directory, with comparisons to revert and cherry-pick.

DevOps

A Practical Guide to Setting Up Maven on Windows

Download and extract Maven, update your Windows environment variables, and confirm that the Java build tool is ready to use.

Spring

How Spring Connects Inversion of Control and Dependency Injection

See how Spring manages components and injects dependencies without forcing business logic to reference the IoC container directly.

Spring

Deploy Java WAR Applications from Eclipse to Tomcat

Follow a five-step walkthrough for configuring Tomcat in Eclipse, adding server libraries, running a JSP project, and verifying the local deployment.

Spring

Deploy Spring Boot Applications on AWS with Fargate

Follow a video walkthrough for containerizing a Spring Boot app, running it with Amazon ECS and Fargate, and accessing it through a public IP address.

DevOps

Agile vs. Waterfall: Which Development Approach Fits?

Compare Agile and Waterfall methodologies, including their approaches to planning, feedback, changing requirements, and continuous software delivery.

Agile

Understanding Spring Component Scanning and Bean Management

See how @Component marks JavaBeans for management and how @ComponentScan discovers them for Spring dependency injection.

Spring

Deploy Spring Boot Microservices with Docker Hub and AWS ECS

This video tutorial walks through configuring an AWS ECS Fargate cluster and running a Docker Hub-hosted Spring Boot service on the public internet.

DevOps

Create Spring Boot Projects with Spring Initializr

Learn how Spring Initializr configures a starter project with your choice of build tool, language, Spring Boot version, and dependencies.

Spring

Understanding Jira Stories, Epics, and Tasks

Learn how Scrum teams use Jira stories for specific features and epics to organize larger bodies of work.

Agile

Build a Strong DevOps Stack With These Five Tool Types

Learn how version control, continuous integration, containers, configuration management, and data technologies support DevOps productivity.

DevOps

Git Stash Pop vs. Apply: Restoring Files and Handling Conflicts

Learn how git stash pop and git stash apply differ, including stash history, conflict resolution, and examples of restoring file changes.

DevOps

Printing Star Patterns with Python Loops

Explore nested loops for triangles, squares, rectangles, and other star patterns, with a look at how the examples also work in Mojo.

Spring

Understanding REST and RESTful APIs

Learn how REST architecture differs from RESTful API implementations, including resource-based URLs, HTTP methods, statelessness, caching, and HATEOAS.

Spring

How to Prompt Java Garbage Collection in Five Ways

Explore five methods that encourage the JVM to run garbage collection, plus guidance for investigating memory leaks and excessive allocation.

Spring

Why IBM Watson Content Hub Struggles from the Start

A critical look at Watson Content Hub exposes confusing branding, internationalization mistakes, and registration friction before users can even try the product.

AI

Understanding Common Programming Naming Conventions

Learn how camel, Pascal, snake, and kebab case differ, and why naming standards vary between programming languages.

Spring

Understanding Scrum as an Agile Framework

This video explains Scrum fundamentals, including sprint structure, core events, team roles, and the iterative approach to product development.

Agile

Deploy a Java WAR to Tomcat Using Maven

Follow five practical steps to configure Tomcat and Maven, run the Tomcat deployment plugin, and verify your web application.

DevOps

Installing the Eclipse IDE on Ubuntu

Follow a five-step installation process, then create a Maven project and test Java development with Eclipse on Ubuntu.

Spring

Build Standalone Console Applications with Spring Boot

This video explains how CommandLineRunner lets Spring Boot console apps use dependency injection and access configured application resources.

Spring

Understanding Java Constructors and Object Initialization

Explore constructor syntax, default behavior, custom parameters, and overloaded constructor examples in Java.

Spring

Build a Minimal JPA and Hibernate Setup

Set up the essential Java tools, compile a JPA-annotated entity, and verify that Hibernate and JPA are configured correctly.

Spring

Java Deployment Tools Worth Considering for Your Next Project

Compare Maven, Gradle, Jenkins, CA Release Automation, and low-level utilities used to build, package, orchestrate, and deploy Java applications.

DevOps

How to Write Clearer Git Commit Messages

This video explains conventions for concise, consistent Git commit subjects and bodies, with examples from major open source projects.

DevOps

How Git Tracks Files from Working Tree to Commit History

See how the working tree, staging index, and commit history interact through practical git status examples.

DevOps

Configure Spring Boot Environments with Profiles

This video explains how profile-specific properties, @Profile annotations, and runtime settings help Spring Boot applications adapt across environments.

Spring

Learn Java Records for Concise, Immutable Data

See how Java records simplify constructors and accessors while helping the JVM optimize immutable data structures.

Spring

Manage Multiple AWS Accounts with AWS CLI Profiles

See how to add named AWS CLI profiles for separate IAM accounts and select the right credentials when running commands.

DevOps

Customize Jenkins CI Jobs with Build Parameters

This video demonstrates how to configure Jenkins String and Boolean parameters, use their values in Windows batch commands, and control Javadoc generation.

DevOps

Installing the Java JDK on Ubuntu

Follow this video guide to install OpenJDK, find its installation directory, and configure the JAVA_HOME environment variable.

Spring

Use Your Own Domain as a Bluesky Handle

Follow the DNS setup and verification steps required to connect a registered domain name to your Bluesky username.

Other

Set Up Visual Studio Code as a Java IDE

This video tutorial walks through installing the Java coding pack, configuring extensions, creating a Maven project, and running Java code.

Spring

Learn GitHub Copilot for AI-Assisted Development

This video tutorial covers IDE integration, Copilot Chat, prompting, code generation, bug fixes, project setup, and automated unit tests.

AI

Understanding Jira Stories and Tasks

Learn how Agile teams use Jira stories to express product vision and tasks to track the implementation work required to deliver it.

Agile

Build a Java Web Scraper with JSoup

Follow a practical example that uses Maven, JSoup, and CSS selectors to collect structured content from a live webpage.

Spring

Five Jenkins Git Plugin Features to Improve Continuous Integration

Learn how to use Jenkins with Git for repository polling, multi-branch builds, automated merges, remote pushes, and sparse checkouts.

DevOps

Why Removing Python's GIL Could Drive Developers to Mojo

The video examines the risks of no-GIL Python, including compatibility work for libraries and dependencies, while arguing that Mojo offers a faster alternative.

Spring

Inside the Java HashMap: Buckets, Collisions, and Trees

This video tutorial explores HashMap storage, hashCode and equals behavior, bucket selection, collisions, and Java 8 performance improvements.

Spring

15 REST API URL Naming Best Practices

Learn how to design readable, secure, and maintainable RESTful API URLs using consistent naming conventions, HTTP methods, versioning, and query parameters.

Spring

Process Large Data Sets with Spring Batch

See how ItemReader, ItemProcessor, ItemWriter, Step, and Job components work together to transform records in Spring Boot.

Spring

Configure Git Credentials for Easier Repository Authentication

Set up Git's credential store, authenticate with access tokens, and troubleshoot conflicts with Git Credential Manager.

DevOps

Why a Standard Java Configuration API Matters for App Staging

Payara's Mike Croft discusses configuration across development, test, and production environments, plus containers and microservices.

Spring

Deploy Java and Spring Boot Apps with Elastic Beanstalk

Learn a straightforward approach to hosting server-side Java applications in AWS, from packaging and port configuration to scaling and load balancing.

DevOps

Design Better RESTful APIs in Java

Explore resource-based URL design, HTTP method semantics, idempotency, and common mistakes in RESTful web services.

Spring

Understanding the Roles of Git and GitHub

Compare local distributed version control with GitHub's cloud-based collaboration, security, and DevOps features.

DevOps

Build a Simple Spring Hello World Application

Learn how to configure a basic Spring project, register a JavaBean, retrieve it from the application context, and print a greeting.

Spring

Breaking Down Three Java Microservices Misconceptions

This video challenges assumptions about microservice front ends, Java frameworks, API choices, and container-based development.

Spring

Understanding Spring, Spring Boot, and the Spring Framework

Learn how the Spring Framework simplifies Java development, how Spring Boot provides autoconfiguration, and what the broader Spring ecosystem includes.

Spring

Create an OpenAI API Key to Access ChatGPT Programmatically

Follow the steps to generate an OpenAI secret key, use it in software, and pay for the API token credits required for access.

AI

How Spring Boot Auto-Configuration Works

Learn how Spring Boot detects dependencies, applies sensible defaults, and lets you create custom auto-configuration components.

Spring

Creating Maven Projects in Eclipse for Java Development

Follow the project setup process and explore Eclipse tools for Maven builds, dependencies, testing, packaging, and repository management.

Spring

Testing and Documenting Spring Boot REST APIs with Swagger

Learn how SpringDoc OpenAPI adds Swagger UI, API documentation, and browser-based testing for Spring Boot REST endpoints.

Spring

Build and Run Your First React Hello World App

Follow the basic setup for a React application, then discover how the example can lead to state, events, variables, and TypeScript.

Spring

Build Desktop Applications with JavaFX

Learn JavaFX fundamentals through a practical video covering GUI components, event handling, layouts, Maven, Gradle, and Eclipse.

Spring

A Practical Beginner's Guide to Git and GitLab

Follow a 10-step walkthrough covering repositories, commits, branches, merge requests, local Git commands, authentication, and collaboration.

DevOps

Run Jenkins Pipelines Inside a Docker Container

Use Docker to launch Jenkins LTS locally without a full Jenkins installation, while preserving configuration and exposing the required ports.

DevOps

Master the Basics of Git and GitHub

This beginner-friendly video explains essential Git commands, repository workflows, branching, and GitHub features for collaborative software development.

DevOps

Practice Questions for the Certified Scrum Master Exam

Explore 80 Scrum certification questions covering Agile principles, Scrum roles, events, values, and the nuances of the Scrum Guide.

Skills

Understanding the MVC Design Pattern

Explore how controllers process requests, models manage data, and views render responses across web, REST, and desktop applications.

Spring

Understanding Java's Ten Constructor Variations

Learn how Java constructors create objects, initialize state, support inheritance, and differ across default, canonical, generic, private, and overloaded forms.

Spring

Understanding Records in Java 17

See how Java records create concise, immutable data classes while supporting methods, interfaces, annotations, and serialization.

Spring

Host a Website for Free Using GitHub Pages

This tutorial demonstrates GitHub Pages deployment and explains how to connect a GoDaddy domain to the hosted site.

DevOps

Build Agentic AI Applications with Amazon Bedrock

This beginner-friendly video explores Bedrock capabilities, including foundation models, generative AI APIs, AWS service integrations, security, and customization.

AI

A Step-by-Step Guide to Java SOAP Services with Jakarta EE

Learn how to create a Jakarta EE Maven project, implement SOAP endpoints in Eclipse, deploy them to WildFly, and test them with SoapUI.

Spring

Installing Python 3.13 on a Windows 11 PC

Follow the installation steps, configure PATH, and test your new Python setup with built-in tools and a Hello World program.

Spring

Build a Spring Boot App with Hibernate, JPA and MySQL

Learn how to map Java objects to MySQL tables, expose CRUD operations through REST, and test APIs with Swagger UI.

Spring

Stashing Untracked Files with Git Push

See how Git stash options preserve untracked files, include ignored resources, and why push is preferred over the deprecated save command.

DevOps

Master Logging Configuration in Spring Boot

Explore SLF4J setup, log levels, output formatting, custom banners and profile-based configuration for effective application monitoring.

Spring

Understanding Spring Controller and RestController

See how response rendering and the implicit @ResponseBody annotation determine which Spring stereotype fits your application.

Spring

Enforce Java Standards with Maven Checkstyle

See how Checkstyle integrates with Maven builds to detect formatting issues, missing Javadocs, shadow variables, and other Java quality violations.

Spring

Get started with SonarQube code quality inspection

Learn how SonarQube analyzes code coverage, security, maintainability, reliability, and defects across development workflows.

DevOps

Undoing Pushed Commits in Git Safely

Compare git revert with hard reset and force push, including the risks to shared repositories and collaborators.

DevOps

How Spring Handles Dependency Injection

Explore the dependency injection pattern through Spring IoC, annotations, and a practical example of wiring an Atari game console.

Spring

Using Git Basics Through GitHub Desktop

See how GitHub Desktop handles repository setup, configuration, file staging, status checks, and commits without requiring an online account.

DevOps

Get Started with SQLite Databases

Follow a practical introduction to installing SQLite, creating tables, running CRUD operations, and connecting a database viewer.

Spring

Implementing CRUD in Spring Boot with JDBC and Spring Data

Compare SQL-driven JdbcTemplate with CrudRepository and see Java examples for creating, retrieving, updating, and deleting records.

Spring

Build PostgreSQL CRUD Applications with Java and JDBC

Learn the core steps for connecting Java to PostgreSQL, configuring the JDBC driver, and performing create, read, update, and delete operations.

Spring

Understanding Java Default Constructors

Learn how Java creates default constructors, initializes fields, and differs from explicit no-argument constructors.

Spring

How to Send SMS Messages with Amazon SNS

This video explains how to configure Amazon SNS and trigger SMS notifications from a Python-based AWS Lambda function.

DevOps

Build a Java REST API with JAX-RS, Eclipse, and TomEE Plus

Follow a practical example that develops, deploys, and tests a Java EE REST service with standard JAX-RS annotations and HTTP methods.

Spring

Push New Git Branches to a Remote Repository

This walkthrough explains the set-upstream push syntax and shows how push.autoSetupRemote can prevent upstream branch errors.

DevOps

Tech Videos

My videos on Java, AI and technology.