# Package org.jfree.date

- Interface Summary
  Interface | Description
  --- | ---
  MonthConstants | Useful constants for months.

- Class Summary
  Class | Description
  --- | ---
  SerialDate | An abstract class that defines our requirements for manipulating dates, without tying down a particular implementation.
  SpreadsheetDate | Represents a date using an integer, in a similar fashion to the implementation in Microsoft Excel.