下面一段实例代码给大家介绍java日期格式加上指定月数得到一个新日期,具体代码如下所示:

public static Date getnewDate(Date olddate, String recordDate) throws ParseException {
Date date = olddate;
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
String data = format.format(date);
String dataStr[] = data.split("-");
//年份
int year = (Integer.parseInt(dataStr[1]) + Integer.parseInt(recordDate))/12;
//月份
int yue = (Integer.parseInt(dataStr[1]) + Integer.parseInt(recordDate))%12;
String a = "";
if(yue<10){
if(yue<1){
a = "12";
}else{
a = "0"+yue;
}
}else {
a = yue+"";
}
dataStr[0]=String.valueOf(Integer.parseInt(dataStr[0]) + year);
dataStr[1]=a;
String newdata = dataStr[0]+"-"+dataStr[1]+"-"+dataStr[2];
Date newDate = format.parse(newdata);
return newDate;
}