How to use slf4j

Java의 주요 Logging Framework

• java.util.logging : Not used recently
• Log4J : Generally used
• Logback : Similar to Log4J (same developer)
• SLF4J : facade pattern
• tinylog : 75KB Jar framework

Apache logging service

SLF4J(Simple Logging Facade for Java) org.slf4j.LoggerFactory

Add jar files

• log4j-1.2.17.jar
• slf4j-api-1.8.28.jar
• slf4j-log4j12-1.7.28.jar

#pom.xml
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api</artifactId>
    <version>1.7.7</version>
</dependency>

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class Sample {
    final Logger logger = LoggerFactory.getLogger(Sample.class);
    public void run() {
        logger.debug("debug");
        logger.info("info");
    }
}