Log4J is short for Apache Logging For Java

For more information, see:

• https://www.tutorialspoint.com/log4j/
• https://www.mkyong.com/logging/log4j-hello-world-example/
• https://www.tutorialspoint.com/log4j/log4j_logging_levels.htm

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Table of contents

• Log4J: SparkJava
• Log4J: Spring Boot

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