Introduction - If you have any usage issues, please Google them yourself
This a java program conceived to calculate a person s age in day and
in second as taking the year 2012 like year references.
The person is asked to enter her date of birth, then the month and the
year. A test is done to verify each year situated between the year of
birth and the reference year are bissextile or no in order to calculate
her number of days respective. The program is composed of 4 classes
including the main class, the JOptionPane class of the swing package is
imported to generate graphic windows.