在Java中跨类实现Logger的标准方法？

Question

I'm building a Javafx application with many classes. I'd like to use java logging from all the classes. But all options seem to come with excessive or repetitive code. These are the ones I can think of:

1. declare Logger as a private static final field in each class ie

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

This option seems kind of annoying having to do this in each class.

2. pass the Logger from the main class to each constructor

Again does not seem elegant

3. create a class just for the logger, and then call static methods on that class for each log item. Seems like creating an additional class just for the logger is excessive.

So how do you guys deal with this situation ? Is it just a matter of choosing the least bad option ?

Answer 1

Option 1 coupled with option 3 (like folks mentioned using a wrapper like slf4j) which will allow switching between implementations is widely used.

declare Logger as a private static final field in each class i.e.

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

Declaring a logger isn't such a big deal and you should be able to define a new class template in your IDE which auto generates the logger code.

Answer 2

I disagree about the "excessiveness" of the third option: the "wrapper" option is actually quite elegant because it has a dedicated class for logger ( SRP ) and it allows you to switch implementations ( log4j , apache-commons-logging , java.util.logging etc) "under the hood" without coupling the rest of the code to that implementation.

As Luiggi mentioned in the comments below SLF4J is such implementation.