Description: Use a set of procedures to install, replace, and remove jar files in a database. When you install a jar file in a database, you give it a Derby jar name, which is an SQL92Identifier.
Keywords: jar files, installing, removing, and replacing

# Add the jar file or files to the database

Use a set of procedures to install, replace, and remove jar files in a database. When you install a jar file in a database, you give it a Derby jar name, which is an `SQL92Identifier`.

Note: Once a jar file has been installed, you cannot modify any of the individual classes or resources within the jar file. Instead, you must replace the entire jar file.

- Jar file examples

Parent topic: Class loading overview
Previous topic: Create jar files for your application
Next topic: Enable database class loading with a property
Related concepts
Dynamic changes to jar files or to the database jar classpath
Signed jar files