用map返回一年中所有的日期 

 1 public static Map<String, String> getDayOfYear(){
 2         Map<String,String> map=new HashMap<String,String>();
 3         SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
 4         List<String> fullDayList = new ArrayList<String>(32);
 5         Calendar ca = Calendar.getInstance();
 6         ca.clear();
 7         ca.set(Calendar.YEAR, 2019);
 8         ca.set(Calendar.MONTH,0);
 9         ca.set(Calendar.DAY_OF_MONTH, 0);
10         int count = ca.getActualMaximum(Calendar.DAY_OF_YEAR);
11         for (int j = 1; j <= count ; j++) {
12             fullDayList.add(sdf.format(ca.getTime()));
13             ca.add(Calendar.DAY_OF_MONTH,1);
14             //星期
15             Locale.setDefault(Locale.CHINA);
16             String[] dayStringOfWeek = {"星期日","星期一","星期二","星期三","星期四","星期五","星期六"};
17             int d = ca.get(Calendar.DAY_OF_WEEK);
18             String day=sdf.format(ca.getTime())+dayStringOfWeek[d-1];
19             map.put("time", day);
20             for (Object value : map.values()) {
21                 System.out.println(value);
22             }
23         }
24         return map;
25     }
26     public static void main(String[] args){
27         Map<String, String> map=getDayOfYear();
28     }

 

posted @ 2020-08-05 15:25  G招财进宝Y  阅读(255)  评论(0)    收藏  举报