Hex

The hex mode is a very basic hex editor implementation. This will allow for precision editing of files. There is no contextual actions here, its just pure hex editing.

Pros:

• True lossless/precision editing.
  • In other modes, making changes will reorganize the class file's constant pool due to the usage of the ASM bytecode library.
• Works regardless of obfuscation.

Cons:

• Difficult if you are not familiar with hex editors and the class file format.
  • You can interactively learn the format by using Kaitai struct's web IDE
    • Select kaitai.io/formats/executable/java_class.ksy
    • At the bottom left corner, click the upload button and select a class file to analyze.