256th day of programmer in this input year

public static String dayOfProgrammerGregorian(int year) {     if (!checkIsGregorianYear(year)) {         return null;     }     StringBuilder stringBuilder = new StringBuilder();     stringBuilder.append(year);     stringBuilder.append("-");     if (checkIsLeapYear(year)) {         // Jan31 Feb29 March31 April30 May31 June30 July31 August31 Sept30 Octor31 Norve30 Decem31         int daySum=0;         for (int i = 0; i < 12; i++) {             int yearMonth=i+1;             if(yearMonth==GregorianCalendarMonthEnum.JAN.getMonthVal()){                 daySum+=31;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<29){                     stringBuilder.append(GregorianCalendarMonthEnum.FEB.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             }else if(yearMonth==GregorianCalendarMonthEnum.FEB.getMonthVal()){                 daySum+=29;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<31){                     stringBuilder.append(GregorianCalendarMonthEnum.MAR.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             }else if(yearMonth==GregorianCalendarMonthEnum.MAR.getMonthVal()){                 daySum+=31;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<30){                     stringBuilder.append(GregorianCalendarMonthEnum.APR.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             }else if(yearMonth==GregorianCalendarMonthEnum.APR.getMonthVal()){                 daySum+=30;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<31){                     stringBuilder.append(GregorianCalendarMonthEnum.MAY.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             }else if(yearMonth==GregorianCalendarMonthEnum.MAY.getMonthVal()){                 daySum+=31;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<30){                     stringBuilder.append(GregorianCalendarMonthEnum.JUN.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             }else if(yearMonth==GregorianCalendarMonthEnum.JUN.getMonthVal()){                 daySum+=30;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<31){                     stringBuilder.append(GregorianCalendarMonthEnum.JUL.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             }else if(yearMonth==GregorianCalendarMonthEnum.JUL.getMonthVal()){                 daySum+=31;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<31){                     stringBuilder.append(GregorianCalendarMonthEnum.AUG.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             } else if(yearMonth==GregorianCalendarMonthEnum.AUG.getMonthVal()){                 daySum+=31;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<30){                     stringBuilder.append(GregorianCalendarMonthEnum.SEP.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             }else if(yearMonth==GregorianCalendarMonthEnum.SEP.getMonthVal()){                 daySum+=30;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<31){                     stringBuilder.append(GregorianCalendarMonthEnum.OCT.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             } else if (yearMonth==GregorianCalendarMonthEnum.OCT.getMonthVal()) {                 daySum+=31;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<30){                     stringBuilder.append(GregorianCalendarMonthEnum.NOV.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             } else if (yearMonth==GregorianCalendarMonthEnum.NOV.getMonthVal()) {                 daySum+=30;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<31){                     stringBuilder.append(GregorianCalendarMonthEnum.DEC.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             } else if (yearMonth==GregorianCalendarMonthEnum.DEC.getMonthVal()) {                 daySum+=31;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<31){                     stringBuilder.append(GregorianCalendarMonthEnum.DEC.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             }         }     }else {         int daySum=0;         for (int i = 0; i < 12; i++) {             int yearMonth=i+1;             if(yearMonth==GregorianCalendarMonthEnum.JAN.getMonthVal()){                 daySum+=31;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<28){                     stringBuilder.append(GregorianCalendarMonthEnum.FEB.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             }else if(yearMonth==GregorianCalendarMonthEnum.FEB.getMonthVal()){                 daySum+=28;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<31){                     stringBuilder.append(GregorianCalendarMonthEnum.MAR.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             }else if(yearMonth==GregorianCalendarMonthEnum.MAR.getMonthVal()){                 daySum+=31;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<30){                     stringBuilder.append(GregorianCalendarMonthEnum.APR.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             }else if(yearMonth==GregorianCalendarMonthEnum.APR.getMonthVal()){                 daySum+=30;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<31){                     stringBuilder.append(GregorianCalendarMonthEnum.MAY.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             }else if(yearMonth==GregorianCalendarMonthEnum.MAY.getMonthVal()){                 daySum+=31;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<30){                     stringBuilder.append(GregorianCalendarMonthEnum.JUN.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             }else if(yearMonth==GregorianCalendarMonthEnum.JUN.getMonthVal()){                 daySum+=30;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<31){                     stringBuilder.append(GregorianCalendarMonthEnum.JUL.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             }else if(yearMonth==GregorianCalendarMonthEnum.JUL.getMonthVal()){                 daySum+=31;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<31){                     stringBuilder.append(GregorianCalendarMonthEnum.AUG.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             } else if(yearMonth==GregorianCalendarMonthEnum.AUG.getMonthVal()){                 daySum+=31;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<30){                     stringBuilder.append(GregorianCalendarMonthEnum.SEP.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             }else if(yearMonth==GregorianCalendarMonthEnum.SEP.getMonthVal()){                 daySum+=30;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<31){                     stringBuilder.append(GregorianCalendarMonthEnum.OCT.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             } else if (yearMonth==GregorianCalendarMonthEnum.OCT.getMonthVal()) {                 daySum+=31;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<30){                     stringBuilder.append(GregorianCalendarMonthEnum.NOV.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             } else if (yearMonth==GregorianCalendarMonthEnum.NOV.getMonthVal()) {                 daySum+=30;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<31){                     stringBuilder.append(GregorianCalendarMonthEnum.DEC.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             } else if (yearMonth==GregorianCalendarMonthEnum.DEC.getMonthVal()) {                 daySum+=31;                 if (daySum>CalendarConstant.WHICHDAYOFPROGRAMMER){                     break;                 }                 int i1 = CalendarConstant.WHICHDAYOFPROGRAMMER - daySum;                 if (i1<31){                     stringBuilder.append(GregorianCalendarMonthEnum.DEC.getKey());                     stringBuilder.append("-");                     stringBuilder.append(i1);                     break;                 }                 continue;             }         }     }     String stringBuilderString = stringBuilder.toString();     String[] split = stringBuilderString.split("-");     //date format: dd.mm.yyyy     StringBuilder stringBuilder1 = new StringBuilder();     for (int i = split.length-1; i > 0; i++) {         stringBuilder1.append(split[i]);         stringBuilder1.append(".");     }     stringBuilder1.substring(0, stringBuilder1.length());     return stringBuilder1.toString(); }