# Environment setup and the Derby tools

The tools `ij`, `sysinfo`, `dblook`, and `SignatureChecker` can all be used in either an embedded or a client/server environment.

- Java Platform, Standard Edition 9
  All Derby tools require Java Platform, Standard Edition (Java SE) 9 or later.
- Classpath
  The jar file derbyrun.jar simplifies the process of setting up the CLASSPATH environment variable to run Derby and the tools.

Parent topic: Overview