ClassInJar

ClassInJar is an identifier for a class located inside a jar. For plain class files it is enough to simply use the actual file system path. A class in a jar is identified as a path to the jar and path to the class within that jar (RelClass). Those two values are held in one string separated by !. Slashes in both paths are consistent with File.separatorChar as the actual string is usually kept in File object.

As an example: given a jar file "C:\develop\zinc\target\output.jar" and a relative path to the class "sbt/internal/inc/Compile.class" The resulting identifier would be: "C:\develop\zinc\target\output.jar!sbt\internal\inc\Compile.class"