Changed variables names "RR" to "numbersOfRows" and "CC" to "numberOfColumns"

For clarify, variable names were changed since previous code was hard
to understand when it is really easy to understand that user wants 300
numberOfPrimes, 4 numberOfColumns and 50 numberOfRows for every page
Mistake in code fixed (posted on MyCourses)

The prof posted a mistake that was done in the code on MyCourses. This
mistake was fixed in the code.
Removed useless variable "WW"

Removed variable "WW" that was not used anywhere else in the class
other than in the constructor.
Change variable name from "JPRIME" to "isPrime"

Make it more understandable to the reader by changing the name of the
variable, and changing the way it is used in the method. For example,
when a number is prime, it should go in the while loop since the number
IS prime, however the way it was coded before made it hard to
understand since it was a double negative. (Before, the line read
itself as while the number isnt (isntPrime)) This way, it is much
clearer what the coder meant
Changed variables names

Changed variable names from numberOfRows and numberOfColumns to
"rowsPerPage" and "columnsPerPage" according to Java coding convention
(xPosition instead of positionX)
Change variable names

Changed "J" to "currentOddNumber" for clarity
Added comments
Changed variable names

"PAGEOFFSET" to "pageOffset" since not a class constant
"C" to "columnIndex" since it is more clear that "columnIndex"
represents the current column that is printed
Changed variables names "ROWOFFSET" to "rowIndex"
Added comment to the printPrimes() method
Fixed logic for the do-while loop
Added comments and changed variable name "SQUARE" to "square" since it is not a constant
Fixed some typos in comments
Fixed comments, added brackets, and changed the name of the printPrimes method

changed the name of the printPrimes method since it is bad convention
to name a method inside the class the same as the name of the class
(other than the constructor)