Исключение при попытке десериализовать XML-файл

Проверить это,

public static int[] sumNeighbours(int[] values) {
int[] list = new int[(values.length)];
for (int i=0; i<values.length; i++) {
 if (values.length > 1) { //To Check if there are more than one values
    if(i==0) //It will check if it is first element
    {
        list[i]=values[i]+values[i+1]; //Add First value and second value to place it in first location. As first location has only one Neighbor 

    }
    else if (i==(values.length-1)) //TO check If its last value
    {
        list[i]=values[i]+values[i-1]; //As Last Location has only one Neighbor
    }
    else
    {
         list[i]=values[i]+values[i-1]+values[i+1]; //For All intermediate locations
  }
}
}
return list;
}