When should I use the dollar symbol ($) in a variable name?
java, naming-conventions
Solution
From the Java Language Specification on identifiers:
The `$` character should be used only in mechanically generated source code or, rarely, to access pre-existing names on legacy systems.
Problem
The dollar symbol ($) is a valid character to name a variable, e.g. `String superSecretFormula$;`, but when we're talking about naming conventions, when should I use this symbol? Underscore for example is mostly used to separate words, as blank spaces can't be used.