How to copy the contents of a table in Excel Web App while maintaining the structure?

Question

excel

Good day.
Started using Excel Web App in an organization and ran into a problem.
When you copy the contents of cells from Excel Web App, the structure of the table is not preserved, only the text is copied.
Question: How can I copy the contents of cells from Excel Web App while maintaining the structure of the table?
The question is very relevant.
Thank you.

Answer 1

If A and B implement a single interface or are inherited from the same class, then it is very easy. If they have fundamentally different types at the root, then only through Object.
For the options listed above, it would be something like this:
or so

bList = (ArrayList<Интерфейс\класс родителя>)aList.clone();