title: Convert Apple's Cocoa framework Epoch (reference_date) to Java Date
body: <p>an iPhone client send a date to a Java server as Apple's Cocoa framework Epoch (which the ms since 2001) and when you converted to java date (since 1970) it convert as 1980 for the year 2011, is adding 30 year to Cocoa date will converted ? or is there any other methode that i could use for this conversion ?</p>