| Issue | Solution | |-------|----------| | Cant load class | JAR is incomplete; use --extraclasspath | | Garbled strings | Use CFR’s --stringdecode | | Java version error | Use CFR with --target 17 |
| Tool | Type | Best For | |------|------|----------| | | GUI | Quick, visual decompilation | | CFR | CLI | Modern Java (up to Java 21) | | Procyon | CLI | Handling obfuscated code | | FernFlower | CLI | IntelliJ’s built-in decompiler | | JADX | GUI/CLI | Android DEX → JAR decompilation | | Luyten | GUI | CFR-based UI | decompile jar file