sudo dpkg -r jre1.8.0-101
(Reading database ... 394521 files and directories currently installed.)
Removing jre1.8.0-101 (1.8.0101-1) ...
find: ‘/usr/java/*’: No such file or directory
/var/lib/dpkg/info/jre1.8.0-101.postrm: line 586: /usr/sbin/alternatives: No such file or directory
dpkg: error processing package jre1.8.0-101 (--remove):
 subprocess installed post-removal script returned error exit status 127
Errors were encountered while processing:
 jre1.8.0-101