What does the '#' symbol mean in a UML class diagram?

uml
troyal picture troyal · Jan 6, 2009 · Viewed 93.4k times · Source

I was reading Algorithms in a Nutshell (O'Reilly) and came across this symbol in a class diagram. My guess is that it means the member is protected, but I wanted to see if anyone knows for sure what it means.

Answer

Mike Hofer picture Mike Hofer · Jan 6, 2009

It indicates a protected member of a class or other data type.

- Indicates private

+ Indicates public

# Indicates protected