Q:

cursor.getLong(1) not throwing Exception

I have an field in database that is null
When I retrieve it in a cursor it is null.
I can tell that from the 

cursor.isNull(1) is true
  So when I do cursor.getLong(1) it should throw an exception according to the documentation. but it actually retrieves 0 without and exception.
  any ideas why? 

A:

If you take a look at the implementation of the method getLong() in MatrixCursor , you can see the following code:
    @Override
public long getLong(int column) {
    Object value = get(column);
    if (value == null) return 0;
    if (value instanceof Number) return ((Number) value).longValue();
    return Long.parseLong(value.toString());
}

If the value is null, then 0 is returned.

