JAVA中获取到两个时间之间的中间月份

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package com.ext.web.report;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
public class Test {
/**
* 获取到两个时间相差的月份,不包含enddate所在的月份
* @param begindate
* @param enddate
* @throws ParseException
*/
private static List<Integer> getMonth(String begindate, String enddate) throws ParseException {
SimpleDateFormat date = new SimpleDateFormat("yyyy-MM-dd");
Date d1 = date.parse(begindate);
Date d2 = date.parse(enddate);
Calendar c1 = Calendar.getInstance();
Calendar c2 = Calendar.getInstance();
c1.setTime(d1);
c2.setTime(d2);
int a =(c2.get(Calendar.YEAR)-c1.get(Calendar.YEAR))*12+c2.get(Calendar.MONTH)-c1.get(Calendar.MONTH);
String[] str = begindate.split("-");
String month = str[1];
int monthnum = Integer.valueOf(month);
List<Integer> lists = new ArrayList<Integer>();
lists.add(monthnum);
int t = 1;
for(int i=1;i <a;i++){
int num = monthnum + i;
if(num < 13){
lists.add(num);
}else{
int mnum = num-12*t;
lists.add(mnum);
if(mnum == 12){
t = t+1;
}
}
}
return lists;
}
/**
* 获取到两个时间相差的年份,例如
2000-2020，返回回来的是一个2000（包含）-2020（包含）的所有年份
* @param begindate
* @param enddate
* @throws ParseException
*/
private static List<String> getYear(String begindate, String enddate) throws ParseException {
List<String> lists = new ArrayList<String>();
String benginYear = begindate;
String endYear =enddate;
int a = Integer.valueOf(endYear) - Integer.valueOf(benginYear);
for(int i = 0;i<=a;i++){
String date = String.valueOf(Integer.valueOf(benginYear)+i) ;
lists.add(date);
}
return lists;
}
public static void main(String[] args) throws ParseException {
String begindate = "2020-01-01";
String enddate = "2030-01-01";
//System.out.println(Test.getMonth(begindate, enddate));
/*List<String> list =Test.getYear(begindate, enddate);
for(int i =0 ;i<list.size();i++){
System.out.println(list.get(i));
}*/
}
}