Hello, World! in J

Example for versions j602

1!:2 is the dyadic foreign conjunction for writing text, the left argument is the string to be written and the right argument specifies the file number, a file number 2 indicates that the text is to be written to the screen.

Alternatively we can use currying to convert the dyadic write conjunction into a monadic conjunction using the bond (&) operator and assign it to a named print function.

The printf library may also be used to print text to the screen. 

'Hello, World!' 1!:2]2

print=: 1!:2&2
print 'Hello, World!'

load 'printf'
'' printf 'Hello, World!\n'