How do you configure log4j with XML?

This configuration of log4j with XML consists of following files:

a.XMLLog4jExample.java
b.log4j.xml

XMLLog4jExample.java

package com.iqjava.log4j;
import org.apache.log4j.Logger;
import org.apache.log4j.xml.DOMConfigurator;
public class XMLLog4jExample {
    static final Logger logger = Logger.getLogger(XMLLog4jExample.class);
    public static void main(String[] args) {
        DOMConfigurator.configure("log4j.xml");
        logger.debug("This is a debug message");
        logger.info("This is an info message");
        logger.warn("This is a warn message");
        logger.error("This is an error message");
        logger.fatal("This is a fatal message");
    }
}

log4j.xml looks like:

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j='https://jakarta.apache.org/log4j/'>
    <appender name="CA" class="org.apache.log4j.ConsoleAppender">
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%-4r [%t] %-5p %c %x - %m%n" />
        </layout>
    </appender>
    <root>
        <level value="debug" />
        <appender-ref ref="CA" />
    </root>
</log4j:configuration>

Here goes the output of the program:

0    [main] DEBUG com.iqjava.log4j.XMLLog4jExample  - This is a debug message
2    [main] INFO  com.iqjava.log4j.XMLLog4jExample  - This is an info message
2    [main] WARN  com.iqjava.log4j.XMLLog4jExample  - This is a warn message
2    [main] ERROR com.iqjava.log4j.XMLLog4jExample  - This is an error message
2    [main] FATAL com.iqjava.log4j.XMLLog4jExample  - This is a fatal message

Eclipse project structure is depicted as in diagram given below: