I was first exposed to perl at Sun Microsystems in 1989, I started working on Java in 1992.
http://stuff.mit.edu/afs/sipb/user/marc/hotjava/doc/people.h... (top left corner)
http://stuff.mit.edu/afs/sipb/user/marc/hotjava/doc/people.h... (top left corner)
http://perldoc.perl.org/perlhist.html