Removed WW

WW was not used and did not determine anything and was therefore
unnecessary and needed to be removed
Changed name of MULT[] to nonPrimes[]

This new name is more descriptive and tells what numbers are going
inside the array
changed ORD --> order

Names should not be abbreviated.
changed j to currentNumber

This gives a descriptive and meaningful name
changed SQUARE --> square

It's better convention in java for variable to be in lowerCamelCase and
only constants to be in all uppercase