看看这段代码，给出你们的算法吧

[chinese9]

从m月的d天到下月的d-1天算是一个月，取系统当前时间，若在这个时间段内，则返回年月，格式为year&month,比如当前月返回“200409”,给出你们的算法

源代码：
public String getNowMonth(int dayfrom){
String retYearAndMonth = null;
String retMonth = null;
java.util.Date date = new java.util.Date();
int day = date.getDate();
int month = date.getMonth();
int year = date.getYear()+1900;
if (day<dayfrom) {
if((month+1)<10){
retMonth = "0".concat(String.valueOf(month+1));
retYearAndMonth = String.valueOf(year).concat(retMonth);
}else{
retMonth = String.valueOf(month+1);
retYearAndMonth = String.valueOf(year).concat(retMonth);
}
}
else
{
if((month+1)<10){
retMonth = "0".concat(String.valueOf(month+2));
retYearAndMonth = String.valueOf(year).concat(retMonth);
}else{
retMonth = String.valueOf((month+2)%12);
if((month+2)%12<10){
retMonth = "0".concat(String.valueOf((month+2)%12));
}
retYearAndMonth = String.valueOf(year+(month+2)/12).concat(retMonth);
}

}
return retYearAndMonth;
}

[takecare]

都发了2贴了，为什么不用Calendar!

[newsnews]

Calendar CurCal = Calendar.getInstance();
int CDay = CurCal.get(Calendar.DATE);
int CMonth = CurCal.get(Calendar.MONTH);
int CYear = CurCal.get(Calendar.YEAR);

象这样你一但分开了，随便你怎么用拉

[lixiang823517]

Calendar ca= new GregorianCalendar();
int month= ca.get(Calendar.MONTH) + 1;
int year= ca.get(Calendar.YEAR);
String year1, month1;
for (int i= 0; i < 12; i++)
{
year1= "" + year;
month1= "" + (month - i);
if ((month - i) <= 0)
{
month1= "" + (month - i + 12);
year1= "" + (year - 1);
}

if (month1.length() == 1)

{

month1= "0" + month1;

}

String str= year1 + month1 ;
}

[baffling]

gz

[haroyy]

java.util.Date date = new Date();
int day = date.getDate();
int month = date.getMonth();
int year = date.getYear()+1900;
if (day<dayfrom) {
java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat("yyyyMM");
retYearAndMonth = sdf.format(date);
}
else {
month+=2;
if(month>12){
year++;
month = 1;
}
retYearAndMonth = year+""+(month>9 ? ""+month : "0"+month);

[chinese9]

我最后的算法：
public int getNowMonth(int dayfrom){
String retYearAndMonth = null;
String retMonth = null;
java.util.Date date = new java.util.Date();
int day = date.getDate();
int month = date.getMonth();
int year = date.getYear()+1900;
if (day<dayfrom) {
return year*100+month+1;
}
else
{
return (year+(month+1)/12)*100+(month+1)%12+1;
}
}