/usr/share/maven-repo/org/apache/poi/ is in libapache-poi-java 3.6+dfsg-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/maven-repo/org/apache/poi/poi/
/usr/share/maven-repo/org/apache/poi/poi-contrib/
/usr/share/maven-repo/org/apache/poi/poi-contrib/3.6/
/usr/share/maven-repo/org/apache/poi/poi-contrib/3.6/poi-contrib-3.6.jar
/usr/share/maven-repo/org/apache/poi/poi-contrib/3.6/poi-contrib-3.6.pom
/usr/share/maven-repo/org/apache/poi/poi-contrib/debian/
/usr/share/maven-repo/org/apache/poi/poi-contrib/debian/poi-contrib-debian.jar
/usr/share/maven-repo/org/apache/poi/poi-contrib/debian/poi-contrib-debian.pom
/usr/share/maven-repo/org/apache/poi/poi-scratchpad/
/usr/share/maven-repo/org/apache/poi/poi-scratchpad/3.6/
/usr/share/maven-repo/org/apache/poi/poi-scratchpad/3.6/poi-scratchpad-3.6.jar
/usr/share/maven-repo/org/apache/poi/poi-scratchpad/3.6/poi-scratchpad-3.6.pom
/usr/share/maven-repo/org/apache/poi/poi-scratchpad/debian/
/usr/share/maven-repo/org/apache/poi/poi-scratchpad/debian/poi-scratchpad-debian.jar
/usr/share/maven-repo/org/apache/poi/poi-scratchpad/debian/poi-scratchpad-debian.pom
/usr/share/maven-repo/org/apache/poi/poi/3.6/
/usr/share/maven-repo/org/apache/poi/poi/3.6/poi-3.6.jar
/usr/share/maven-repo/org/apache/poi/poi/3.6/poi-3.6.pom
/usr/share/maven-repo/org/apache/poi/poi/debian/
/usr/share/maven-repo/org/apache/poi/poi/debian/poi-debian.jar
/usr/share/maven-repo/org/apache/poi/poi/debian/poi-debian.pom