//  Data Structures with Java by John R. Hubbard
//  Copyright McGraw-Hill, 2001
//  Problem 2.3 on page 41

import java.util.Arrays;
import java.util.Vector;

public class Pr0203
{ public static void main(String[] args)
  { double[] x = { Math.E, Math.PI };
    String[] s = { "North", "East", "South", "West" };
    Vector[] y = new Vector[0];
    Object[] a = { x, s, null, y };
    Object[] b = { x, s, null, y };
    System.out.println("b.equals(a) = " + b.equals(a));
    System.out.println("Arrays.equals(a,b) = " + Arrays.equals(a,b));
  }
}