Change global setting for Logger instances

Question

I\'m using java.util.logging.Logger as the logging engine for my application. Each class uses it\'s own logger, i.e., each class has:

private final Logger lo         


        

Answer 1

JUL(java.util.logging) is java default logger within jvm.

Java Logging Technology--see Overview

So you may find that there is a default config file already in C:\Program Files\Java\jre1.8.0_221\lib\logging.properties

I recommend that you create a new config file under your project to override the default setting, do as following:

config file name, logging.properties, all log level can be found in Class Level

handlers= java.util.logging.ConsoleHandler
.level= INFO
java.util.logging.ConsoleHandler.level = ALL
java.util.logging.ConsoleHandler.formatter = java.util.logging.SimpleFormatter
java.util.logging.SimpleFormatter.format= [%1$tF %1$tT] [%4$-7s] %5$s %n

# your specific logger level
com.xyz.foo.level = SEVERE

Then add jvm option to enable the config

java -Djava.util.logging.config.file="logging.properties" -Duser.country=CN -Duser.language=en

user.country and user.language may have an effect on log message localization