gistfile1.txt

import java.util.Objects;

public class TestHashPerformance {
  private static final int N = 10000000;

  public static void main(String args[]) {
    int r[] = new int[N];
    long start = System.currentTimeMillis();
    long n1=0, n2=N;
    for (int i = 0; i < N; i++) {
      r[i] = Objects.hash(Long.valueOf(n1), Long.valueOf(n2));
      n1++;
      n2--;
    }
    System.out.println(
        "hashing two Long casted from long "
            + N
            + " times took "
            + (System.currentTimeMillis() - start)
            + " mills");
    n1=0; n2=N;
    start = System.currentTimeMillis();
    for (int i = 0; i < N; i++) {
      r[i] = (int) (n1 ^ n2);
      n1++;
      n2--;
    }
    System.out.println(
        " XORing two longs "
            + N
            + " times took "
            + (System.currentTimeMillis() - start)
            + " mills");
  }
}