log4j.appender.console=org.apache.log4j.ConsoleAppender log4j.appender.console.layout=org.apache.log4j.PatternLayout log4j.appender.console.layout.conversionPattern=%d{yyyy-MM-dd HH:mm:ss} [%t] %-5p %c{1}:%L - %m%n log4j.rootLogger=INFO, console log4j.logger.com.example.myapp=ERROR import java.util.logging.Logger; public class ExampleClass { private static final Logger LOGGER = Logger.getLogger(ExampleClass.class.getName()); public void doSomething() { LOGGER.info("Doing something..."); try { } catch (Exception e) { LOGGER.severe("An error occurred: " + e.getMessage()); } } }