e2immu is a static code analyser for Java. It offers practical definitions of modification and immutability, to help you write code that lasts longer. This project is archived — development continues as maddi.
Continue to maddi Read the e2immu docsThe real purpose of a code analyser is to help you write better code, either by correcting you, or inspiring you.
Read about some of the concepts introduced by e2immu in The Road to Immutability, whether you are a novice at Java, or a life-long enthousiast.
e2immu provides practical definitions for immutability, and helps you maintain a balance between object orientend and functional paradigms.
Bend, or sharpen, the modification rules yourself: Annotated APIs determine how you view library code.
A plugin for IntelliJ lets you see the immutability status of your classes in your IDE. The Gradle plugin runs the analyser.
Learn the concepts and use the support classes. The analyser is there to help, but it is not required.