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 }
