Array element reverse

import java.util.Arrays;
//from  j a v a2 s  .c om
public class Main {
  public static void reverse(byte[] array) {
    if (array == null) {
      return;
    }
    int i = 0;
    int j = array.length - 1;
    byte tmp;
    while (j > i) {
      tmp = array[j];
      array[j] = array[i];
      array[i] = tmp;
      j--;
      i++;
    }
  }

  public static void main(String[] args) {
    byte[] b1 = new byte[] { 3, 2, 5, 4, 1 };
    for (byte b : b1) {
      System.out.println(b);
    }

    reverse(b1);
    for (byte b : b1) {
      System.out.println(b);
    }

  }

}

public class Main {
  public static void reverse(long[] array) {
      if (array == null) {
          return;
      }/*  j  a v  a2s .  co  m*/
      int i = 0;
      int j = array.length - 1;
      long tmp;
      while (j > i) {
          tmp = array[j];
          array[j] = array[i];
          array[i] = tmp;
          j--;
          i++;
      }
  }
}