/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/ is in liblog4j1.2-java-doc 1.2.16-3ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/DOMConfigurator.html
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/Log4jEntityResolver.html
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/SAXErrorHandler.html
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/UnrecognizedElementHandler.html
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/XMLLayout.html
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/class-use/
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/class-use/DOMConfigurator.html
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/class-use/Log4jEntityResolver.html
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/class-use/SAXErrorHandler.html
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/class-use/UnrecognizedElementHandler.html
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/class-use/XMLLayout.html
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/doc-files/
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/doc-files/log4j.dtd.gz
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/examples/
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/examples/XMLSample.java
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/examples/doc-files/
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/examples/doc-files/XMLSample.java
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/examples/doc-files/sample1.xml
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/examples/doc-files/sample2.xml
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/examples/doc-files/sample3.xml
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/examples/doc-files/sample4.xml
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/examples/doc-files/sample5.xml
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/package-frame.html
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/package-summary.html
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/package-tree.html
/usr/share/doc/liblog4j1.2-java/api/org/apache/log4j/xml/package-use.html