campbell@campbellsComputer:~$ find /dev/fd/3
/dev/fd/3
Let's see what I can find in my O'Reilly book
Linux in a Nutshell (Siever Figgins Love and Robbins) page 139
It says find takes pathname followed by tags for the conditions, defaulting to starting from the current directory. If you start a pathname with / it obviously goes to the filesystem root, otherwise it assumes your path starts from the current directory. So when I went to ~, this:-
find java/ -name Char*.java
gave me quite a lot of files with names beginning Char.
I suggest you try
cd /var/lib
ls j*
to see whether the jenkins folder is there at all. I haven't got one myself, but I am not using Jenkins.
find /home/ -name Char*Printer.java -type f
works for me, finding about 6 kind sof CharacterPrinter files.