jd-core

JD-Core is a Java decompiler library designed to convert Java bytecode back to readable Java source code, supporting versions from Java 1.1.8 to Java 12. Key features include the ability to handle modern Java constructs like lambda expressions and method references, and it serves as the core engine for the JD-GUI application. It provides a flexible API that allows users to implement custom loaders and printers for decompilation tasks.