Code Correctness: Invalid Call to Object.equals()

The program calls Object.equals() on an array instead of java.util.Arrays.equals().

Calling Object.equals() against an array is a mistake in most cases, since this will check the equality of the arrays' addresses, instead of the equality of the arrays' elements, and should usually be replaced by java.util.Arrays.equals().

Example 1: The following tries to check two arrays using the Object.equals() function.

...
  int[] arr1 = new int[10];
  int[] arr2 = new int[10];
  ...
  if (arr1.equals(arr2)){
    //treat arrays as if identical elements
  }
...

This will almost always result in code that is never executed, unless at some point there is an assignment of one array to the other.