> For the complete documentation index, see [llms.txt](https://joungkyun.gitbook.io/annyung-3-user-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://joungkyun.gitbook.io/annyung-3-user-guide/annyung3-package-catalog/annyung3-base-packages/pkg-base-ecj.md).

# ecj

## Descriptions:

ECJ is the Java bytecode compiler of the Eclipse Platform. It is also known as the JDT Core batch compiler.

## Changes on AnNyung:

1. 4.5.1 upgrade

## Sub packages: