<dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.7.32</version> </dependency> import org.slf4j.Logger; import org.slf4j.LoggerFactory; Logger logger = LoggerFactory.getLogger(YourClassName.class); logger.debug("This is a debug message."); logger.info("This is an info message."); logger.warn("This is a warning message."); logger.error("This is an error message.");