Arrays with different datatypes i.e. strings and integers. (Objectorientend)

Question

For example I have 3 books: Booknumber (int), Booktitle (string), Booklanguage (string), Bookprice (int).

Now, I

Answer 1

Notice the repetition of Book in Booknumber (int), Booktitle (string), Booklanguage (string), Bookprice (int)- it screams for a class type.

class Book {
  int number;
  String title;
  String language;
  int price;
}

Now you can simply have:

Book[] books = new Books[3];

If you want arrays, you can declare it as object array an insert Integer and String into it:

Object books[3][4]