java获得两个日期之间的所有月份

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package enToCh;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;

public class Demo1 {
	public static List<String> getMonthBetween(String minDate, String maxDate) throws ParseException {
	    ArrayList<String> result = new ArrayList<String>();
	    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");//格式化为年月

	    Calendar min = Calendar.getInstance();
	    Calendar max = Calendar.getInstance();

	    min.setTime(sdf.parse(minDate));
	    min.set(min.get(Calendar.YEAR), min.get(Calendar.MONTH), 1);

	    max.setTime(sdf.parse(maxDate));
	    max.set(max.get(Calendar.YEAR), max.get(Calendar.MONTH), 2);

	    Calendar curr = min;
	    while (curr.before(max)) {
	     result.add(sdf.format(curr.getTime()));
	     curr.add(Calendar.MONTH, 1);
	    }
	    min = null;max = null;curr = null;
	    return result;
	  }
	
	public static void main(String[] args) throws ParseException {
		String minDate = "2018-01";
		String maxDate = "2018-06";
		List<String> list = getMonthBetween(minDate, maxDate);
		for(String s : list){
			System.out.println(s);
		}
	}
}

测试结果如下：

2018-01
2018-02
2018-03
2018-04
2018-05
2018-06

若起始日期相同minDate=maxDate=2018-01    则输出2018-01

若起始minDate>maxDate    则没有任何输出