.level = DEBUG handlers = java.util.logging.ConsoleHandler java.util.logging.ConsoleHandler.level = INFO java.util.logging.ConsoleHandler.formatter = java.util.logging.SimpleFormatter handlers += java.util.logging.FileHandler java.util.logging.FileHandler.level = ALL java.util.logging.FileHandler.pattern = logs/myapp.log java.util.logging.FileHandler.formatter = java.util.logging.SimpleFormatter java.util.logging.FileHandler.append = true import java.io.FileInputStream; import java.io.IOException; import java.util.logging.LogManager; public class MyApp { public static void main(String[] args) throws IOException { LogManager.getLogManager().readConfiguration(new FileInputStream("logging.properties")); } } import java.util.logging.Logger; public class MyLibrary { private static final Logger logger = Logger.getLogger(MyLibrary.class.getName()); public void doSomething() { } }