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/...
The way of getting size of ResultSet, No need of using ArrayList etc. int size =0; if (rs != null) { rs.beforeFirst(); rs.last(); size = rs.getRow(); } Now You will get size, And if you want print the ResultSet, before printing use following line of code too, rs.beforeFirst();