public int compare(Field a, Field b) {
if (a == b) return 0;
else if (a == null) return -1;
else if (b == null) return 1;
else if (a.equals(b)) return 0;
int cmp = a.getName().compareTo(b.getName());
if (cmp != 0) return cmp;
cmp = a.getDeclaringClass().getName().compareTo(b.getDeclaringClass().getName());
if (cmp != 0) return cmp;
return a.getType().getName().compareTo(b.getType().getName());
}
