How to Decompile a Java .exe File

A Java .exe is usually a wrapper around a JAR (Launch4j, exe4j, jpackage). Learn how to find the embedded JAR and decompile it back to readable Java source.

Why You Can't Decompile the .exe Directly

Step 1: Find the JAR

Step 2: Extract an Embedded JAR (If There's No Separate JAR)

Step 3: Decompile the JAR

A Note on Legality

Summary