<Configuration>
	<Properties>
		<!-- the pattern we use for our log files -->
		<Property name="DefaultPattern">%d{DEFAULT} [%-5p] %c{1} - %m%n</Property>
		<!-- a header written of the beginning of every log file -->
		<Property name="DefaultHeader">*** HEADER ***${sys:line.separator}</Property>
	</Properties>

	<Appenders>
		<File name="file" fileName="file.log" append="false">
			<PatternLayout header="${DefaultHeader}" pattern="${DefaultPattern}" />
		</File>
		<RandomAccessFile name="randomaccessfile" fileName="randomaccessfile.log" append="false">
			<PatternLayout header="${DefaultHeader}" pattern="${DefaultPattern}" />
		</RandomAccessFile>
	</Appenders>

	<Loggers>
		<Root level="INFO">
			<AppenderRef ref="file" />
			<AppenderRef ref="randomaccessfile" />
		</Root>
	</Loggers>
</Configuration>

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

public class Test {
    private static final Logger LOG = LogManager.getLogger();

    public static void main(String[] args) {
        LOG.info("Test");
    }
}

*** HEADER ***
2023-11-30 16:54:04,898 [INFO ] Test - Test

2023-11-30 16:54:04,898 [INFO ] Test - Test