What does '$' means in "int $value" in android or java?

Question

In the source, there are some '$'. I don't know about these '$' means. Where does these '$' come from? Java, or android?

public static synchronized PreferenceUtil instance(Context $context) {
  if (_instance == null)
     _instance = new PreferenceUtil($context);
  return _instance;
}

It is also difficult to find the answer of interest and search for $. Could you anyone help?

See this question http://stackoverflow.com/q/7484210/1741542 — Olaf Dietsche, Oct 02 '15 at 06:02

score 0 · Accepted Answer · answered Oct 02 '15 at 06:02

It means someone has a background in another language and is naming his variables according to its preferences (perhaps marking method parameters with a $ prefix).

Even though it's syntactically correct, it makes code harder to read for other Java developers, since Java has its own recommended styles.

What does '$' means in "int $value" in android or java?

1 Answers1