Using a long as ArrayList index in java

Question

I am writing this java program to find all the prime numbers up to num using the Sieve of Eratosthenes, but when I try to compile, it says I can\'t use a long var as an arra

Answer 1

the jScience Library has a large vector called Float64Vector. While I have never used this Class it might fit your needs. No promises.

EDIT: Zach Scrivena pointed out in the comments that the Float64Vector is dimensioned to ints. I stand corrected.