(Java) 2014年1月1日减一个月涉及时间与字符的转换

 1 import java.text.ParseException;

 2 import java.text.SimpleDateFormat;

 3 import java.util.Calendar;

 4 import java.util.Date;

 5 

 6 

 7 public class TestMinusOneMonth {

 8 

 9     public static void main(String[] args) {

10         String string = "2014-01-01";

11         SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

12         try {

13             Date date = sdf.parse(string);

14             Calendar calendar = Calendar.getInstance();

15             calendar.setTime(date);

16             calendar.add(Calendar.MONTH, -1);

17             date = calendar.getTime();

18             string = sdf.format(date);

19             System.out.println(string); //2013-12-01

20         } catch (ParseException e) {

21             e.printStackTrace();

22         }

23     }

24 }