Question

This will be easy for your guys!

How do I prevent SLF4J from displaying fully qualified class names (e.g. com.mycompany.mypackage.MyObject) and just output MyObject?

I generally prefer this:

1)

private static final Logger LOGGER = LoggerFactory
        .getLogger(MyObject.class);

to this:

2)

private static final Logger LOGGER = LoggerFactory
        .getLogger("MyObject");

so that when I refactor/rename MyObject to MyThing the reference gets updated automatically for me.

Yet.. with 1) I get unwieldy output: com.mycompany.mypackage.MyObject

I just need to see MyObject in the log…

Optionally: if you know how to selectively colour output (e.g. \e[0;33m for example) based on log level, that would be great to know.

Answer 1

According to the API for the SimpleLogger, you could try setting the org.slf4j.simpleLogger.showShortLogName property of your LOGGER instance to true.

From the API:

org.slf4j.simpleLogger.showShortLogName – Set to true if you want the
last component of the name to be included in output messages. Defaults
to false.