1、时间戳转为日期格式
public class Time{
public static void main(String args[]){
String time="1381730322000";
System.out.println(TimeStamp2Date(time, "yyyy-MM-dd HH:mm:ss"));
}
public static String TimeStamp2Date(String timestampString, String formats){
Long timestamp = Long.parseLong(timestampString);
String date = new java.text.SimpleDateFormat(formats).format(new java.util.Date(timestamp));
return date;
}
}
2、获取本周周一日期
Calendar cal = Calendar.getInstance();
cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
String MonDate = formatter.format(cal.getTime());
3、获取N天前的日期
/**
* 获取n天前的日期
* @param n
* @return
*/
public static String getNDayBefore(int n) {
Date date = new Date();
int year = Integer.parseInt(new SimpleDateFormat("yyyy").format(date));
int month = Integer.parseInt(new SimpleDateFormat("MM").format(date));
int day = Integer.parseInt(new SimpleDateFormat("dd").format(date)) - n;
if (day < 1) {
month -= 1;
if (month == 0) {
year -= 1;
month = 12;
}
if (month == 4 || month == 6 || month == 9 || month == 11) {
day = 30 + day;
} else if (month == 1 || month == 3 || month == 5 || month == 7
|| month == 8 || month == 10 || month == 12) {
day = 31 + day;
} else if (month == 2) {
if (year % 400 == 0 || (year % 4 == 0 && year % 100 != 0)) {
day = 29 + day;
} else {
day = 28 + day;
}
}
}
String y = year + "";
String m = "";
String d = "";
if (month < 10)
m = "0" + month;
else
m = month + "";
if (day < 10)
d = "0" + day;
else
d = day + "";
return y + "-" + m + "-" + d;
}
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转播
