find error

[Tapas Mishra]

I used find in following fashion to exclude find to search in directory /opt

find / -name java -prune  -o -name /opt -print

but I got following warning

find: warning: Unix filenames usually don't contain slashes (though
pathnames do).  That means that '-name `/opt'' will probably evaluate
to false all the time on this system.  You might find the '-wholename'
test more useful, or perhaps '-samefile'.  Alternatively, if you are
using GNU grep, you could use 'find ... -print0 | grep -FzZ `/opt''.

did I do some thing wrong?