A jeff file extension is related to the Java Explanation Facility Framework and used for its data files.
Software that open jeff file
JEFF file extension - Java Explanation Facility Framework data
What is jeff file? How to open jeff files?
File type specification:
The jeff file extension is associated with the Java Explanation Facility Framework (JEFF) written in Java programming language.
The jeff file stores some kind of data used by Java Explanation Facility Framework.
This jeff file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.
The default software associated to open jeff file:
Company or developer:
Oracle Corporation
Java is a set of developing applications and specifications used to create software in Java programming language. Java is used on many computing platforms from desktop computers to mobile phones.
Java source code derives much syntax from C and C++ programming language but has a simpler object model. To run applications written in Java the Java runtime environment must be installed on a device.
List of recommended software applications associated to the .jeff file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open jeff file, edit jeff file, convert jeff file, view jeff file, play jeff file etc. (if exist software for corresponding action in File-Extensions.org's database).
Unspecified and all other actions for computer programs working with jeff file - Java Explanation Facility Framework data
Click on the software link for more information about Java. Java uses jeff file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).