Libraries provided by Derby

Engine library: Library Name Use derby.jar For embedded databases.
You always need this library for embedded environments. For client/server environments, you only need this library on the server.
Tools libraries: For embedded environments, you need a library in the classpath to use a tool. For a client/server environment, you need a library on the client only. Library Names Use derbytools.jar Required for running all the tools (such as ij, dblook, and import/export). derbyrun.jar Executable jar file that can be used to start the tools.
The Network Server library: Library Name Use derbyclient.jar Required to start the Network Server.
The network client library: Library Name Use derbyclient.jar Required to use the network client driver.
The locale libraries: Library Names Use

derbyLocale_cs.jar

derbyLocale_de_DE.jar

derbyLocale_es.jar

derbyLocale_fr.jar

derbyLocale_it.jar

derbyLocale_hu.jar

derbyLocale_ja_JP.jar

derbyLocale_ko_KR.jar

derbyLocale_pl.jar

derbyLocale_pt_BR.jar

derbyLocale_ru.jar

derbyLocale_zh_CN.jar

derbyLocale_zh_TW.jar

Required to provide translated messages for the indicated locales.