back

Rolls the date back by 1 day. It modifies both the Gregorian and Jewish dates accordingly. The API does not currently offer the ability to forward more than one day at a time, or to forward by month or year. If such manipulation is required use the java.util.Calendar class java.util.Calendar.add or java.util.Calendar.roll methods in the following manner.

`
Calendar cal = jewishDate.getTime(); // get a java.util.Calendar representation of the JewishDate
cal.add(Calendar.MONTH, -3); // subtract 3 Gregorian months
jewishDate.setDate(cal); // set the updated calendar back to this class
` *

See also