Do you want to become a better developer?
I digest complex topics (mainly) in the Java/JVM programming world and write them up as fun and easily understandable guides & courses. So that you save time, frustration and do a better job. 👨💻👩💻
Courses
Java Guides
Java Versions & Features
How to install the latest Java. Differences between Java distributions (Adoptium, AdoptOpenJDK, OpenJDK etc.). Overview of language features: Java 8-17.
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Java Microservices: A Practical Guide
Understand what Java microservices are, how you architect and build them. Also: A look at Java microservice libraries & common questions.
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JDBC - a short guide
You can use this guide to learn the basics of JDBC: How to connect to any database and execute SQL queries. Including JDBC drivers & connection pools.
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Java & Databases: An Overview of Libraries & APIs
Overview of all popular database libraries & APIs in Java. Covers JDBC, Hibernate, JPA, jOOQ, Spring Data and more.
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How To Work With Files In Java
How to work with files in Java through the Path API. From reading and writing files, to watching directories & using in-memory file systems.
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How To Do Logging In Java
Discover, understand and use the right Java logging library for your applications, like Log4j2, Logback, or java.util.logging.
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Intermediate Java - A Learning Path | Part1
In this fun guide you will build a mp3-archiving project from scratch, learning a lot about Core Java, JDBC, servlets and much more.
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mvn clean install - a short guide to Maven
Use this guide to understand what a 'mvn clean install' really does. Also: A crash-course on Maven and workarounds for its most common pitfalls.
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jOOQ - a short guide
Use this guide to understand what jOOQ is, how to get started with it quickly and how jOOQ integrates with or compares to libraries like Spring and Hibernate.
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Spring Guides
What is Spring Framework? An Unorthodox Guide
You can use this guide to understand what Spring framework is and how its core features like dependency injection or aspect-oriented programming work. Also, a comprehensive FAQ.
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What is Spring MVC: @Controllers & @RestControllers
You can use this guide to understand what Spring MVC is, how its @Controllers, @RestControllers and DispatcherServlet work. Also, how it compares to Spring Boot.
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How Spring Boot's Autoconfigurations Work
You can use this guide to get an in-depth understanding of what Spring Boot's Autoconfigurations are and how they work.
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Spring Transaction Management: @Transactional In-Depth
You can use this guide to get a simple and practical understanding of how Spring's transaction management with the @Transactional annotation works.
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11 Spring Boot Interview Questions That Make You Think
Here are 11 Spring Boot interview questions that don't focus on trivial details, but rather make you think and thus learn a lot along the way.
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Spring And Spring Boot Versions
A short guide to the latest Spring and Spring Boot versions, as well as information on the release cycle and maintenance windows.
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Spring Security: Authentication and Authorization In-Depth
You can use this guide to understand what Spring Security is and how its core features like authentication, authorization or common exploit protection work.
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Spring Security & OAuth 2.0 - In-Depth
You can use this guide to get a deep understanding of OAuth 2.0 and how you integrate Spring Security with it.
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