/usr/share/doc/libjets3t-java/api/org/apache/commons/ is in libjets3t-java-doc 0.8.1+dfsg-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/libjets3t-java/api/org/apache/commons/httpclient/
/usr/share/doc/libjets3t-java/api/org/apache/commons/httpclient/contrib/
/usr/share/doc/libjets3t-java/api/org/apache/commons/httpclient/contrib/proxy/
/usr/share/doc/libjets3t-java/api/org/apache/commons/httpclient/contrib/proxy/PluginProxyTestApplet.html
/usr/share/doc/libjets3t-java/api/org/apache/commons/httpclient/contrib/proxy/PluginProxyUtil.html
/usr/share/doc/libjets3t-java/api/org/apache/commons/httpclient/contrib/proxy/ProxyDetectionException.html
/usr/share/doc/libjets3t-java/api/org/apache/commons/httpclient/contrib/proxy/package-frame.html
/usr/share/doc/libjets3t-java/api/org/apache/commons/httpclient/contrib/proxy/package-summary.html
/usr/share/doc/libjets3t-java/api/org/apache/commons/httpclient/contrib/proxy/package-tree.html