Fernflower

Uses control and data flow analysis to reconstruct semantically correct Java code, ensuring it can be recompiled, unlike pattern-based decompilers that may produce syntactically invalid output.

Offers over 30 command-line options for fine-tuning output, including handling generics, lambdas, enums, and obfuscated code, as detailed in the README's option list.

Accepts external library references via the -e= option to improve type analysis and identifier renaming, crucial for accurate decompilation of code with dependencies.

Reconstructs variable and parameter names from debug attributes when available, enhancing the readability and usability of decompiled source code for debugging purposes.