🚧 Work in Progress! 🚧

A Prettier plugin must first parse the source code of the target language into a traversable data structure (Usually an Abstract Syntax Tree) and then print out that data structure in a "pretty" style.

Prettier-Java uses a Java-Parser implemented in JavaScript using the Chevrotain Parser Building Toolkit for JavaScript. What this means is that unlike many other Prettier plugins, prettier-java has no additional runtime pre-requisites (e.g: Python executable). It could even be used inside a browser.

This project contains 2 packages:

• prettier-plugin-java A plugin for Prettier to format Java code

  

• java-parser A Java Parser using Chevrotain which output a Concrete Syntax Tree

  

• Parser package alpha version done, it can parse most of Java code. However, we still need to make some tweaks and improvements.
• The printer (actually prettier-java package) is mostly done, it can output formatted code but needs to be improved on some cases.

Since the plugin is meant to be used with Prettier, you need to install it:

npm install -g prettier

or

yarn global add prettier

npm install -g prettier-plugin-java

or

yarn global add prettier-plugin-java

prettier --write MyJavaFile.java

If the plugin is not automatically loaded:

# Example where the plugin is locate in node_modules
prettier --write MyJavaFile.java --plugin=./node_modules/prettier-plugin-java

Contributions are very welcome. See the contribution guide to get started. And the Help Wanted issues.

Special thanks to @thorbenvh8 for creating the original prettier-java plugin and the associated Java Parser implemented in JavaScript.