lombok
Very spicy additions to the Java programming language.
Project Lombok is a Java library that automatically generates repetitive boilerplate code like getters, setters, equals, and builders from simple annotations on your classes.
Project Lombok is a Java library that cuts down on the repetitive code Java developers otherwise have to write by hand. In Java, even a simple data class typically needs a lot of boilerplate: methods to read each field, methods to write them, a way to compare two objects for equality, and so on. Lombok generates that code automatically, so your source files stay short and readable.
The way it works is that Lombok plugs into your code editor and build tools. You add a short annotation, a tag starting with the @ symbol, to a class or field, and Lombok fills in the corresponding methods when your code is compiled. The README names a few examples of what this replaces: getter methods, an equals method, a fully featured builder for constructing objects step by step, and automatic logging variable setup. It notes there is much more, but keeps the list short and points to the project website for the full picture.
This README is intentionally brief. It serves mostly as a set of pointers rather than a tutorial. It links to the project website at projectlombok.org for a proper introduction, download instructions, and usage guidance. It also links to the license, an authors file crediting everyone who has contributed, and a security policy. For organizations that want paid support, it mentions that Lombok is available through a Tidelift subscription.
Because the README is sparse on detail, anyone wanting to understand the specific annotations available and how each one behaves should follow the link to the official site. The short version is that Lombok is a productivity tool for Java: it takes a class of tedious, repetitive code and generates it from small annotations, leaving the programmer with cleaner source files and less to maintain.
Where it fits
- Add @Getter and @Setter to a Java class to auto-generate all accessor methods without writing them by hand.
- Use @Builder on a Java class to generate a fluent builder pattern for constructing objects step by step.
- Replace manual equals() and hashCode() methods with Lombok annotations to reduce code volume.
- Add automatic logging field setup to any Java class with a single annotation.