August 10, 2026 Build a Spring Boot 4 File Uploader with Java 26 Use Spring MVC MultipartFile, Java Path APIs and the browser fetch API to upload files asynchronously and save them safely on the server. How Java Constructor Overloading Works See how overloaded constructors provide flexible initialization and how the this() method reduces duplicate code in a Java class. Understanding Brackets, Braces, and Parentheses in Code Explore the correct terminology and common programming uses for round parentheses, square brackets, and curly braces. Set Up the Java 21 JDK on Windows Follow the essential steps to download Java 21, configure Windows environment variables, update PATH, and confirm that the JDK is working. Opening and running Java JAR files Learn how JAR files relate to ZIP archives, how to extract their contents, and how to run them with Java commands. A Practical Guide to HTTP Verbs in REST APIs Understand what each major HTTP method does, how safe and idempotent operations differ, and which verbs REST API developers use most often. Installing the Java JDK on Windows Follow five practical steps to download the JDK, configure Windows environment variables, and confirm Java works from the command line. Understanding Java Array Length, Capacity, and Loops See how to read an array's length, define its fixed size, compare arrays with ArrayList and String, and use length in loops. Understanding PUT and POST HTTP Methods Compare how PUT and POST handle resources, URLs, payloads, idempotence, creation, updates, and other REST API operations. 11 Programmer Jokes for Java Developers and Tech Teams Share these playful programming jokes, complete with explanations of the Java, Linux, recursion, and developer references behind each punchline. Install Java 21 and configure JAVA_HOME on Ubuntu Use apt to install the JDK, verify Java 21 on Ubuntu, and configure the JAVA_HOME environment variable for system-wide use. How the Actor Model Supports Scalable Java Systems Explore actor principles, messaging patterns, Akka implementation concepts, use cases, tradeoffs, and debugging challenges. Build a Tic-Tac-Toe Game with Java 25 Build a modern console game with Java 25 compact source files, IO.readln, arrays, input validation, player turns, win detection and tie handling. Fixing Java Not Recognized Errors on Windows and Linux Resolve command-line Java errors by checking your installation, configuring the JDK or JRE PATH, and restarting your terminal. Resolve Missing, Invalid, and Misconfigured JAVA_HOME Settings This guide explains how to point JAVA_HOME to the correct JDK, avoid the bin directory, and troubleshoot conflicts with JRE and PATH settings. Understanding Common Programming Naming Conventions Learn how camel, Pascal, snake, and kebab case differ, and why naming standards vary between programming languages. Understanding Precision in Java double Values See how the JVM represents double values, how printf controls displayed decimals, and when BigDecimal is a better choice for accurate calculations. 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. Learn Java Recursion Through Five Practical Examples Explore recursive methods for sums, factorials, Fibonacci numbers, and palindrome checks, then consider recursion’s performance and stack limitations. Integrating Swagger and OpenAPI into Spring Boot Add SpringDoc OpenAPI with Maven or Gradle, access Swagger UI, and simplify REST API testing, documentation, validation, and code generation. Java Integer vs. int: Types, Performance, and Usage Understand how Java's primitive int differs from the Integer wrapper class, including initialization, methods, autoboxing, memory use, and performance. Installing Java and the JDK on Windows, macOS, and Ubuntu Learn how to choose a Java distribution, install the JDK or JRE, configure JAVA_HOME and PATH, and verify your setup. Build Java File Uploads with Servlets and Ajax This example covers HTML5 upload forms, Servlet multipart processing, JSP applications, and asynchronous Ajax uploads to a Java server. Understanding Java’s length Property and length() Method See how Java handles array sizes and String character counts, why the syntax differs, and which compile errors result from mixing them up. Understanding REST and RESTful APIs Learn how REST architecture differs from RESTful API implementations, including resource-based URLs, HTTP methods, statelessness, caching, and HATEOAS. 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. Create a MySQL Database Schema with Workbench Learn how to create a schema in MySQL Workbench and connect it to Java applications through JDBC, Hibernate, or JPA. Deprecated and depreciated: Understanding the distinction Learn how deprecated software components differ from depreciated assets in accounting, including when to use each term. Spring @Bean vs @Component Explained Use @Component for classpath-scanned application components and @Bean on configuration methods when you need explicit control over object creation. 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. 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. Build a Recursive Palindrome Checker in Java Explore recursive String comparisons, palindrome test cases, and alternative Java approaches using loops, arrays, and user input. Build a Formatted Console Table in Java with printf Use Java printf field specifiers, spacing, pipelines, and dashes to create a readable table of primitive type details. Resolve Eclipse's Missing Java Virtual Machine Error Update the Eclipse installer configuration so it can find the Java executable in your JDK installation on Ubuntu or Windows. Understanding Records in Java 17 See how Java records create concise, immutable data classes while supporting methods, interfaces, annotations, and serialization. A Practical Introduction to Scala for Java Developers Explore Scala syntax, functional programming concepts, Java interoperability, collections, classes, traits, and the sbt build tool. Force Java 8 or Java 21 Compliance in Maven Learn how to configure Maven compiler settings in the POM so Eclipse consistently uses Java 8, Java 11, or another specified JDK release. 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. How to Detect Duplicates in Python Lists Explore increasingly efficient Python solutions for identifying repeated list items, including hash-based set lookups and a concise one-line method. Build Desktop Applications with JavaFX Learn JavaFX fundamentals through a practical video covering GUI components, event handling, layouts, Maven, Gradle, and Eclipse. Sign and Verify Java JAR Files with jarsigner This practical example shows how keytool and jarsigner work together to create certificates, digitally sign JAR archives, and validate signatures. Build Your First Spring Boot 3 REST Application Follow a quick, practical walkthrough to create, configure, run, and test a Spring Boot 3 web service with Java and STS. 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. The Correct Pronunciation of 11 Common Tech Terms Explore the accepted pronunciations of familiar programming, Unix, cloud, data, and developer tools, from JSON and GIF to Nginx and Udemy. Deploying JAR Dependencies in Apache Tomcat Understand why Tomcat deploys WAR files, where application JARs should be placed, and how to configure shared libraries without creating classloader conflicts. 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. The Top 10 Benefits of Java for Modern Development Explore why Java remains popular, including its performance, portability, static typing, object-oriented design, functional programming support, and compatibility. How Spring Boot Auto-Configuration Works Learn how Spring Boot detects dependencies, applies sensible defaults, and lets you create custom auto-configuration components. 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. Build a Number Guessing Game in Mojo Learn Mojo fundamentals by creating a number guessing game with variables, control flow, exception handling, and Python API integration. 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. Three Ways to Store Multiple Values per Java Map Key See how ArrayList, Apache Commons, and Google Guava can solve the multiple-values-per-key limitation in Java maps. Simplify Java Console Input and Output Learn how to use Java's Console class for readLine, readPassword, and formatted printf output, plus understand Eclipse console limitations. Understanding Java’s Biggest Drawbacks A practical look at Java limitations, from runtime performance and pointer access to licensing concerns and the growing JDK ecosystem. Managing Spring Boot Configuration with Profiles See how to organize environment-specific settings, activate profiles, and customize dependency injection with Spring properties, YAML, and @Profile. Configure Spring Boot Applications with Properties Files Explore practical ways to manage Spring Boot settings, profiles, logging, server ports, YAML files, and deployment overrides. Build a Java 25 Database App with JDBC and HSQLDB Build a modern JDBC example with Java 25, HSQLDB, prepared statements, try-with-resources, SQL inserts and queries. Understanding Deprecated and Obsolete Software See how deprecated components differ from obsolete ones, and review examples from Java, HTML, iOS, and other technologies. 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. 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. 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. Use Midnight and Noon Instead of 12am and 12pm Clear time labels improve user experience and help developers avoid confusing date and time terminology in software. 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. Understanding SQL Transaction Isolation Levels Learn how read uncommitted, read committed, repeatable read, serializable, and none affect database consistency and performance. Find the Size of an Array in Java Use Java's length property correctly, distinguish it from String length(), and avoid common compile-time and runtime errors. 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. 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. Enabling Preview Features in Java 21 Learn the compile-time and runtime flags required to test Java 21 preview features, including unnamed classes and instance main methods. Understanding Java's main Method with Practical Examples Explore Java's application entry point, including its syntax, static keyword, String array arguments, and role in Spring Boot microservices. 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. Learn Java Records for Concise, Immutable Data See how Java records simplify constructors and accessors while helping the JVM optimize immutable data structures. 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. Understanding Java var and Type Inference See how var simplifies local variable declarations while retaining Java's strong typing and learn when the reserved word cannot be used. Customize or Remove the Spring Boot Startup Banner Use a configuration property to hide the default banner, or create a custom banner.txt file with application details and ASCII art. 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. 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. Python and Java Put to the Hello World Test See how each language handles console output, newline characters, standard APIs, and simple graphical dialogs. Boost CPU-Bound Python Workloads with Multiprocessing Explore how separate processes enable parallel execution in Python, along with the tradeoffs of IPC, serialization, process pools, and shared state. Can You Explain Eclipse’s Java Error Marker? Explore a deceptively tricky core Java interview question involving Eclipse, unreachable code, and the meaning of its red-circled white x. Configure Spring Applications with XML Explore the benefits and limitations of XML wiring, dependency injection with beans.xml, and Spring Boot integration using ClassPathXmlApplicationContext. Comparing Apache Tomcat and JBoss EAP Explore how Tomcat and JBoss differ in enterprise Java support, licensing, administration tools, and production support. 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. How Spring Handles Dependency Injection Explore the dependency injection pattern through Spring IoC, annotations, and a practical example of wiring an Atari game console. 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. Where Java Applications Are Used Today See how Java powers gaming, desktop software, mobile platforms, enterprise systems, microservices, IoT devices, and browser applications. Understanding Spring Controller and RestController See how response rendering and the implicit @ResponseBody annotation determine which Spring stereotype fits your application. 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. Understanding Reactive System Architecture Learn how reactive systems use message-driven communication, resilience, elasticity, and architectural patterns to support highly available applications. 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. 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. Design Better RESTful APIs in Java Explore resource-based URL design, HTTP method semantics, idempotency, and common mistakes in RESTful web services. 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. Process Large Data Sets with Spring Batch See how ItemReader, ItemProcessor, ItemWriter, Step, and Job components work together to transform records in Spring Boot. 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. 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. How Java Autoboxing Affects JVM Performance Learn how primitive-to-object conversions can increase garbage collection and how Java Flight Recorder and JDK Mission Control help identify the problem. 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. Understanding Java Constructors and Object Initialization Explore constructor syntax, default behavior, custom parameters, and overloaded constructor examples in Java. JPA and Hibernate: What Java Developers Need to Know This video clarifies the relationship between the JPA specification and Hibernate, including their history, features, and role in ORM development. Understanding the Meaning Behind JDBC Explore why JDBC is commonly expanded as Java Database Connectivity, while its trademark history gives the term a different legal interpretation. 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. Before Java, There Was Oak Discover how Sun Microsystems selected Java after its original language name, Oak, conflicted with an existing trademark. 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. Why Java Lambda Expressions Make Newer JDKs Worthwhile See how lambdas simplify functional interfaces, reduce code bloat, improve variable scope, and open the door to more concise Java development. Understanding Java Lambda Expressions and Their Origins Explore the mathematical roots of lambda functions and see how Java 8 makes functional interface implementations more concise. Understanding Spring Component Scanning and Bean Management See how @Component marks JavaBeans for management and how @ComponentScan discovers them for Spring dependency injection. Master Logging Configuration in Spring Boot Explore SLF4J setup, log levels, output formatting, custom banners and profile-based configuration for effective application monitoring. Five Java Web Frameworks for Server-Side Applications Explore the strengths and use cases of Vaadin, Spring MVC, JSF, Java MVC, Servlets, and JSPs for browser-based web development. 11 Quirky Terms Every Software Developer Should Know Explore the informal names developers use for programming operators, symbols, syntax, and common computer science concepts. Bring GitHub Maven Projects into Eclipse Follow a straightforward Eclipse workflow to clone a Maven repository from GitHub and import one or more projects into your workspace. 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. Fixing the HttpServlet Error in Eclipse Follow three steps to connect an Eclipse web project with its application server runtime and resolve the missing HttpServlet class. 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. Simplify TypeScript Constructors with Configuration Interfaces See how a single typed configuration object can replace unwieldy constructor parameter lists and make class initialization easier to manage. Choosing Between Java HashMap and Hashtable See how these Java map implementations differ in synchronization, null support, performance, and recommended usage. Installing Apache Tomcat for Java Web Development Follow the setup steps for Java, Tomcat downloads, Windows environment variables, server startup, and installation verification. Understanding JPA EntityManager and Hibernate Transactions See how EntityManagerFactory and EntityManager persist entities, commit changes, and roll back database transactions in Java applications. Understanding the MVC Design Pattern Explore how controllers process requests, models manage data, and views render responses across web, REST, and desktop applications. What Java Developers Need to Know About Servlet 6.0 The Jakarta EE 10 release modernizes the Servlet API with stronger URI security, durable request and response handling, flexible cookies, and simpler implementations. 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. Why Python's Global Interpreter Lock Still Matters An examination of Python's multicore threading limits, proposed GIL alternatives, Project Mojo, and Java's approach to parallelism. Installing the Java Mission Control 8 Plugin in Eclipse This walkthrough covers the prerequisites, Maven build commands, local repository setup, and Eclipse installation steps for JMC and JFR. 10 Ways to Improve JavaScript and JSON Performance Explore practical techniques for faster websites, from reducing event handlers and caching DOM lookups to lazy loading and removing unused code. 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. How JPA and Hibernate Can Generate Database Tables This video explains JPA schema-generation settings, Hibernate configuration options, and programmatic table creation with SchemaExport. Capturing Java Heap Dumps for Memory Diagnostics Use JDK tools and JVM settings to collect heap snapshots for investigating Java memory problems and OutOfMemoryError events. Five Ways to Modernize Java Portlet Applications Learn how to reduce portal-specific dependencies with microservices, REST APIs, client-side rendering, portlet bridges, and Servlet-based designs. Five JDBC Facts Every Java Beginner Should Know A concise introduction to JDBC terminology, database compatibility, connection pooling, ODBC integration, and API stability. Learn Spring Boot Actuator for Runtime Monitoring Configure Actuator dependencies and endpoints, inspect application metrics, enable the stop endpoint, and build custom Actuators. Why Java Deprecated Methods Rarely Disappear The deprecation of finalize highlights Java's long-standing approach to backward compatibility and its reluctance to remove deprecated APIs. Five Essential Practices for Better Software Development Learn how simplicity, consistency, testing, maintenance, and performance analysis can improve software projects and deployments. Resolve the MySQL MyISAM Error in Hibernate and JPA Update the Hibernate MySQL dialect to match your database version and prevent schema creation from failing with a type=MyISAM SQL syntax error. Bld Brings Java-Based Build Logic to Projects Learn how Bld uses Java classes for build logic and how it compares with Maven and Gradle. Choosing a Replacement for Concurrent Mark Sweep Explore the reasons behind CMS deprecation and evaluate G1, ZGC, or continued CMS use for your Java application's garbage collection needs. How Java SE 9 Changes Development and Operations Simon Maple discusses Java 9 modularity, release cadence, ecosystem support, and the effects on development, operations, and business teams. 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. How MVC 1.0 and JSR-375 Support Java Microservices Ivar Grimstad discusses MVC 1.0 for container-based admin interfaces and the standardized security capabilities introduced by JSR-375 in Java EE 8. How to Capture a Java Thread Dump Learn how to identify a Java process and capture thread dumps with jps, jstack, kill -3, or VisualVM on Linux and Windows. Making the Most of Oracle Code One 2019 A conference veteran shares practical advice on scheduling sessions, choosing talks, attending keynotes, and enjoying San Francisco. Breaking Down Three Java Microservices Misconceptions This video challenges assumptions about microservice front ends, Java frameworks, API choices, and container-based development. How LLVM Is Advancing Java Virtual Machine Performance Azul CTO Gil Tene discusses the Falcon JIT compiler, faster Java startup, hardware-aware optimization, and high-performance JVM workloads. Why Custom User Registries Often Create More Problems A look at the operational risks of consolidating LDAP servers and directories in custom authentication code, plus a safer alternative. Why Oracle Code One Belongs in Las Vegas Oracle’s move of Code One from San Francisco addresses the city’s hotel costs and limited capacity for large technology conferences. Rethinking the Law of Demeter in Object-Oriented Design A closer look at the distinction between the actual Law of Demeter and the overly strict one-dot interpretation.