import java.text.simple date format ; code example
Example: how to format ddmmmyyyy to ddmmyy in java
SimpleDateFormat format1 = new SimpleDateFormat("MM/dd/yyyy");
SimpleDateFormat format2 = new SimpleDateFormat("dd-MMM-yy");
Date date = format1.parse("05/01/1999");
System.out.println(format2.format(date));