/usr/ is in libehcache-java 2.6.11-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/java/
/usr/share/java/ehcache-core-2.6.11.jar
/usr/share/maven-repo/
/usr/share/maven-repo/net/
/usr/share/maven-repo/net/sf/
/usr/share/maven-repo/net/sf/ehcache/
/usr/share/maven-repo/net/sf/ehcache/ehcache-core/
/usr/share/maven-repo/net/sf/ehcache/ehcache-core/2.6.11/
/usr/share/maven-repo/net/sf/ehcache/ehcache-core/2.6.11/ehcache-core-2.6.11.pom
/usr/share/maven-repo/net/sf/ehcache/ehcache-core/debian/
/usr/share/maven-repo/net/sf/ehcache/ehcache-core/debian/ehcache-core-debian.pom
/usr/share/doc/
/usr/share/doc/libehcache-java/
/usr/share/doc/libehcache-java/changelog.Debian.gz
/usr/share/doc/libehcache-java/README
/usr/share/doc/libehcache-java/copyright
/usr/share/java/ehcache-core.jar
/usr/share/java/ehcache.jar
/usr/share/maven-repo/net/sf/ehcache/ehcache-core/2.6.11/ehcache-core-2.6.11.jar
/usr/share/maven-repo/net/sf/ehcache/ehcache-core/debian/ehcache-core-debian.jar