Class Editor

Class Editor is, as its name implies, a lightweight application designed to assist you in exploring and editing the internal structure of any Java class binary file, as well as create classes from scratch.
The interface is simple and well-organized, enabling you to view details about class properties, contant pools, fields and methods, in separate tabs. Class Editor can read the Java class file and display its category, the version, access restrictions and interfaces, which you can modify according to your preferences.
You can use this application to view and edit field and method attributes, delete interfaces, modify their name and even add new ones to the class. A list of the included constant pools is also available, together with their type, string, name index, descriptor and value. The navigation tools, the search section and the filtering options are designed to help you easily find the entry that you are looking for.
One of its advantages is the ability to detect cascading changes, which means that when a portion of the structure is modified, the class is scanned for dependencies and connections to other fields, in order to prevent errors.
Additionally, it can check the class for consistency to help you create valid files. For instance, deleting a method results in the removal of the referenced constant pool entry, which is no longer needed.
The application can also display the related classes, analyze compiler specific attributes, as well as generate complete readable reports regarding the class functioning. It also comes in handy if you want to create new classes, which can help you learn Java instructions and class file internals.
All in all, Class Editor is an easy to use tool that developers can use to examine the insight of Java class binary files and make quick modifications to properties, fields, methods and attributes.