最近项目中有个需求是要添加倒计时的功能,需要在原日期的基础上加上一天。
import java.text.Format;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
public class KXX {
public static void main(String[] args) {
SimpleDateFormat f = new SimpleDateFormat("yyyy-MM-dd");
Date today = new Date();
System.out.println("今天是:" + f.format(today));
Calendar c = Calendar.getInstance();
c.setTime(today);
c.add(Calendar.DAY_OF_MONTH, 1);// 今天+1天
Date tomorrow = c.getTime();
System.out.println("明天是:" + f.format(tomorrow));
}
}
/*
* 将时间转换为时间戳
*/
public static long dateToStamp(String s) throws ParseException {
String res;
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = simpleDateFormat.parse(s);
long ts = date.getTime();
res = String.valueOf(ts);
return ts;
}
/*
* 将时间戳转换为时间
*/
public static String stampToDate(String s){
String res;
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
long lt = new Long(s);
Date date = new Date(lt);
res = simpleDateFormat.format(date);
return res;
}
/**
* long转换时分秒
* @param l
* @return
*/
public static String formatLongToTimeStr(Long l) {
int hour = 0;
int minute = 0;
int second = 0;
second = l.intValue() ;
if (second > 60) {
minute = second / 60; //取整
second = second % 60; //取余
}
if (minute > 60) {
hour = minute / 60;
minute = minute % 60;
}
String strTime = hour+":"+minute+":"+second;
return strTime;
}