java - Should a "static final Logger" be declared in UPPER-CASE?

Question

In Java, static final variables are constants and the convention is that they should be in upper-case. However, I have seen that most people declare loggers in lower-case which comes up as a violation in PMD.

e.g:

private static final Logger logger = Logger.getLogger(MyClass.class);

Just search googleor SO for "static final logger" and you will see this for yourself.

Should we be using LOGGER instead?

Answer 1

The logger reference is not a constant, but a final reference, and should NOT be in uppercase. A constant VALUE should be in uppercase.

private static final Logger logger = Logger.getLogger(MyClass.class);

private static final double MY_CONSTANT = 0.0;