$ java Crypt
usage: java Crypt [-d] [-u] -kKEY source

$ java Crypt -kapple
usage: java Crypt [-d] [-u] -kKEY source

$ java Crypt -kapple short.txt
"Btxyk alpci ih bzve xbasripyx twpy fexcr wmpge"

Thxa Ueczhzr. Sprcid Wdzts: hetviijlp lthdsnh
dq e hpgoaods hergxzv. Hnepvidc Msozh, 1995.

$ java Crypt -kapple -u http://cs.ucsb.edu/~cs10/samplepage.html
<hibw>
<leps><emtat>L wabewi wtq aegt</itxlt></wped>
<qdoc>
Sdbp wabewi ttme - ahpi tw dxhapanto sn iwtw wtq aegt.
P 2yh lxcp sf itix, bji omsealc ddtd roi xygljsp e ntl wmnt.
<qc>E lxcp frtpv xav - szis sxdtlpn lw a cth pict.
Prd du demeap xemi.
</msdn>
</weql>

$ java Crypt -kapple short.txt > short-apple.txt

$ java Crypt -d -kapple short-apple.txt
"Being aware is more important than being smart"

Phil Jackson. Sacred Hoops: spiritual lessons
of a hardwood warrior. Hyperion Books, 1995.

$ java Crypt -kapple badfilename
Input/output error - java.io.FileNotFoundException: badfilename (No such file or directory)

$ java Crypt -kapple -u http://bad.web.address
Input/output error - java.net.UnknownHostException: bad.web.address

$ java Crypt -kapple -u cs.ucsb.edu/~cs10/samplepage.html
Input/output error - java.net.MalformedURLException: no protocol: cs.ucsb.edu/~cs10/samplepage.html

$ java Crypt -k short.txt
missing key string with -k option

$ java Crypt -x -kapple short.txt
bad option: -x

$ java Crypt -kapple short.txt longer.txt
extra input source: longer.txt