All matter is made of atoms. Atoms are the smallest particle of matter. They are so small that you cannot see them with your eyes or even with a standard microscope. A standard sheet of paper is about a million atoms thick.
Answer Wiki. The int type is a 4-byte signed integer. There are also tinyint (1 byte), smallint (2 bytes), and bigint (8 bytes), and unsigned versions of all of these. As Apostolos mentioned, the docs for all the numeric types are here: http://dev.mysql.com/doc/refman/...
Hence, arrays are usually declared with an initial size. Here is an example of how to declare an int array with initial size: int[] thisIsAnIntArray = new int[5]; Integer[] thisIsAnIntegerArray = new Integer[5]; Note that the int array above will not only create the array, but each item will have the value 0. This is because int is a primitive type.