package com.gk.firework.Domain.Vo; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Calendar; public class GenerateCode { public static String generateProduct(){ String code = ""; Calendar calendar = Calendar.getInstance(); String year = String.valueOf(calendar.get(Calendar.YEAR)); int month = calendar.get(Calendar.MONTH)+1; int day = calendar.get(Calendar.DATE); String two = year.substring(year.length()-2); String four = changeMd(month,day); code = two + four; return code; } private static String changeMd(int month, int day) { String three = ""; String four = ""; if (month < 10){ three = String.valueOf(month); }else { three = String.valueOf(ConvetInt2Char(month - 10)); } if (day < 10){ four = String.valueOf(day); }else { four = String.valueOf(ConvetInt2Char(day - 10)); } return three + four; } private static char ConvetInt2Char(int i){ return (char)(i + 'A'); } }