Why does this code using random strings print "hello world"?

Описание

Why does this code using random strings print "hello world"?
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(stackoverflow.com/users/1031797/0x56794e)0x56794E
(stackoverflow.com/users/597657/eng-fouad)Eng.Fouad
(stackoverflow.com/users/1247781/fthompson)FThompson
(stackoverflow.com/users/143585/denis-tulskiy)Denis Tulskiy
(stackoverflow.com/users/458180/xdd)xDD
(stackoverflow.com/users/411022/ilmari-karonen)Ilmari Karonen
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random string java