((top)) - Java Decompiler
If you are writing a report or paper and need a summary of the landscape without reading 30 pages, the standard academic consensus is:
You have a JAR from Maven Central. The docs are wrong. Your code throws a NullPointerException at line 147 of com.example.MagicBox . A decompiler lets you step into that library's decompiled source in your debugger to see the real logic. This is standard practice for senior Java devs. java decompiler
Are you looking at this as a developer who lost source code, a security researcher, or just someone fascinated by the philosophical idea that "compilation is not protection"? If you are writing a report or paper