Java中的ORACLE函数MONTHS_BETWEEN的模拟

您可以使用：

public static int monthsBetween(Date minuend, Date subtrahend){    Calendar cal = Calendar.getInstance();       cal.setTime(minuend);      int minuendMonth =  cal.get(Calendar.MONTH);      int minuendYear = cal.get(Calendar.YEAR);      cal.setTime(subtrahend);      int subtrahendMonth =  cal.get(Calendar.MONTH);      int subtrahendYear = cal.get(Calendar.YEAR);    return ((minuendYear - subtrahendYear) * (cal.getMaximum(Calendar.MONTH)+1)) +        (minuendMonth - subtrahendMonth);  }

编辑：

根据此文档
MONTHS_BETWEEN返回小数结果，我认为此方法可以执行相同的操作：

public static void main(String[] args) throws ParseException {    SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");    Date d = sdf.parse("02/02/1995");    Date d2 = sdf.parse("01/01/1995");    System.out.println(monthsBetween(d, d2));}public static double monthsBetween(Date baseDate, Date dateToSubstract){    Calendar cal = Calendar.getInstance();       cal.setTime(baseDate);    int baseDayOfYear = cal.get(Calendar.DAY_OF_YEAR);      int baseMonth =  cal.get(Calendar.MONTH);      int baseYear = cal.get(Calendar.YEAR);    cal.setTime(dateToSubstract);      int subDayOfYear = cal.get(Calendar.DAY_OF_YEAR);    int subMonth =  cal.get(Calendar.MONTH);      int subYear = cal.get(Calendar.YEAR);    //int fullMonth = ((baseYear - subYear) * (cal.getMaximum(Calendar.MONTH)+1)) +        //(baseMonth - subMonth);      //System.out.println(fullMonth);    return ((baseYear - subYear) * (cal.getMaximum(Calendar.MONTH)+1)) +   (baseDayOfYear-subDayOfYear)/31.0;}