Open JP File
JP files store data in a Java natural Japanese font properties file type. Java is an extended, concurrent, general-purpose computational programming language, primarily class-based, object-oriented, and specifically designed to have as few dependencies as possible during implementation.
JP extension files contain the information and data necessary for the proper representation of a specific Japanese font style, therefore JP files are cataloged as font files.
The source type files are not intended to be opened manually, therefore such action is not recommended, however, to operate on a source type file, it is necessary to have a JDK installed that is compatible with your operating system.
Note: this file extension should not be confused with the .jp internet top level domain, which is the one corresponding to Japan.