This error message is indicating that the Log4j2 library is unable to find a logging implementation, such as log4j-core, on the classpath.

To resolve this issue, you need to add the log4j-core library to your project's classpath. Here are the steps to do that:

  1. Identify the version of log4j-core you want to use. You can find the latest version on the Log4j2 website or by searching for it on Maven Central.

  2. If you are using a build tool like Maven or Gradle, add the log4j-core dependency to your project's configuration file. For example, in Maven, you would add the following code to your pom.xml file:

<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-core</artifactId>
    <version>2.x.x</version>
</dependency>

Replace "2.x.x" with the desired version of log4j-core.

  1. If you are not using a build tool, you can manually download the log4j-core JAR file from the Log4j2 website or Maven Central, and add it to your project's classpath.

  2. After adding the log4j-core dependency, rebuild your project and run it again. The error message should no longer appear, and Log4j2 will use the log4j-core library for logging.

Note: If you are using an IDE, make sure to refresh the project or restart the IDE after making these changes to ensure that the classpath is updated correctly

ERROR StatusLogger Log4j2 could not find a logging implementation Please add log4j-core to the classpath Using SimpleLogger to log to the console

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