Java Class File Decompiler -

| Use Case | Recommended Tool | | :--- | :--- | | | Built-in IntelliJ Decompiler (Fernflower) | | General Developer (Eclipse/VS Code) | Enhanced Class Decompiler plugin (uses CFR/Fernflower) | | Security Researcher / Auditor | Bytecode Viewer (GUI) or CFR (CLI) | | Android / APK Analysis | JADX | | Legacy Java (Java 1.4) | JD-GUI |

Java class files are compiled from Java source code and contain the platform-independent bytecode that can be executed by the Java Virtual Machine (JVM). However, sometimes it is necessary to recover the original source code from a class file, for example, when: java class file decompiler

Using is the most direct method.