Java NIO: How to Avoid Overwriting an Existing File When Creating a New File Protect your file with a single enum.
Java: How to Convert Integer, String, Float, and Double to BigDecimal If you haven't yet needed this, you will eventually.
Java: How to Easily Match RegEx Patterns That Include Metacharacters Isn't a pain to search for strings with metacharacters?
Spring Boot and Kubernetes: How to Use an External JSON Configuration It's not always a great idea to tie your configuration to your application.
Spring Boot: How to Add Conditional Annotations Because sometimes you need a Spring-managed component, and sometimes you don't.
Spring Boot and Kubernetes: How to Check Logs in a Pod Kubernetes makes things easy. Except when it doesn't.
Spring Boot and Jackson: How to Format a Date With @JsonFormat This is useful if you store the date as a number.
Spring Boot and Jackson: How to Add a Naming Strategy for Serialization with @JsonNaming Sometimes you want the snake. Sometimes you want the kebab.