1 public static List<String> get6Month() { 2 3 List<String> list = new ArrayList<>(); 4 5 SimpleDateFormat sdf=new SimpleDateFormat("yyyyMM"); 6 for (int i = 6; i > 0; i--) { 7 8 Calendar calendar = Calendar.getInstance(); 9 //获取当前时间的前6个月 10 calendar.add(Calendar.MONTH,-i); 11 //将calendar装换为Date类型 12 Date date = calendar.getTime(); 13 14 System.out.println(sdf.format(date)); 15 list.add(sdf.format(date)); 16 17 } 18 19 return list; 20 }