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SLF4J Binding to Simple Logger Example
How to use SLF4J API with SLF4J Simple Logger?
✍: Guest
If you want to use SLF4J API with SLF4J Simple Logger, you need specify slf4j-api-*.jar and slf4j-simple-*.jar in Java classpath as shown in this tutorial.
1. Write a simple Java program, Hello.java, to use SLF4J API:
// Copyright (c) FYIcenter.com import org.slf4j.Logger; import org.slf4j.LoggerFactory; public class Hello { private static final Logger log = LoggerFactory.getLogger("fyiLog"); public static void main(String[] args) { System.out.println("Log class: "+log.getClass().getName()); log.error("Hello - error"); log.warn("Hello - warn"); log.info("Hello - info"); log.debug("Hello - debug"); log.trace("Hello - trace"); } }
2. Run Hello.java with slf4j-api-1.7.31.jar and slf4j-simple-1.7.31.jar.
$ java -version java version "15" 2020-09-15 $ java -cp slf4j-api-1.7.31.jar:slf4j-simple-1.7.31.jar Hello.java Log class: org.slf4j.impl.SimpleLogger [main] ERROR fyiLog - Hello - error [main] WARN fyiLog - Hello - warn [main] INFO fyiLog - Hello - info
3. Review the output:
⇒ SLF4J Binding to JDK Loger Example
2021-12-23, 564🔥, 0💬
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