When does the logback configuration file load?

Question

How does loading logback.xml file work? in particular, when is it loaded?

I see this explanation all over the Internet:

• Logback tries to find a file called logback.groovy in the classpath.
• If no such file is found, logback tries to find a file called logback-test.xml in the classpath.
• If no such file is found, it checks the logback.xml file in the classpath.
• If no files are found, the log is automatically configured automatically using BasicConfigurator, which will cause the log to be displayed on the console.

But without mentioning when it is loaded. Is this the first call to a registration operator?

Answer 1

getILoggerFactory() initialization occurs the first time the getILoggerFactory() method is getILoggerFactory() in org.slf4j.LoggerFactory . This method is indirectly called by the LoggerFactory.getLogger() method. Thus, in practice, the first call to LoggerFactory.getLogger() will perform logarithmic classical initialization.