Decompile

Read decompiled source for any dependency — cached as .java files.

One command decompiles an entire jar with Vineflower. Every class becomes a .java file under .jackknife/source/. Cached for instant re-reads. No extraction to /tmp, no javap.

mvn jackknife:decompile -Dclass=com.fasterxml.jackson.databind.ObjectMapper

The first decompile for a jar takes 3-5 seconds. After that, every class in that jar is a file on disk — read it directly, no Maven needed.

• Basic Usage
  Decompile a class from any indexed jar.
• Caching
  Decompile once, read forever — no Maven needed for subsequent reads.
• Source Structure
  How decompiled source files are organized.