Project Euler > Problem 1 > Multiples of 3 and 5 (Java Solution)

Problem:

If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23.

Find the sum of all the multiples of 3 or 5 below 1000.

Solution:

233168

Code:
The solution may include methods that will be found here: Library.java .

public interface EulerSolution{

public String run();

}

/* 
 * Solution to Project Euler problem 1
 * By Nayuki Minase
 * 
 * http://nayuki.eigenstate.org/page/project-euler-solutions
 * https://github.com/nayuki/Project-Euler-solutions
 */


public final class p001 implements EulerSolution {
 
 public static void main(String[] args) {
  System.out.println(new p001().run());
 }
 
 
 public String run() {
  int sum = 0;
  for (int i = 0; i < 1000; i++) {
   if (i % 3 == 0 || i % 5 == 0)
    sum += i;
  }
  return Integer.toString(sum);
 }
 
}