import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;
public class 距离指定时间还有多少天 {
/**
* 默认时区为北京时间
*/
public static TimeZone DEFAULT_SERVER_TIME_ZONE = TimeZone.getTimeZone("GMT+08:00");
public static void main(String[] args) {
// 输入指定日期
long timeMillis = getTimeInMillis(, 2, 5, 0, 0, 0);
Calendar current = Calendar.getInstance(TimeZone.getDefault());
current.setTimeInMillis(System.currentTimeMillis());
Calendar date = Calendar.getInstance(TimeZone.getDefault());
date.setTimeInMillis(timeMillis);
long time = date.getTimeInMillis() - current.getTimeInMillis();
// 天
int day = Math.round(time / 1000 / 60 / 60 / 24);
// 时
int hour = Math.round(time / 1000 / 60 / 60 % 24);
// 分
int minute = Math.round(time / 1000 / 60 % 60);
// 秒
int second = Math.round(time / 1000 % 60);
System.out.println(String.format("%s天%s时%s分%s秒", day, hour, minute, second));
}
/**
* 设置年、月、日、时、分、秒，并转换成时间戳
*
* @param year
* 年
* @param month
* 月
* @param day
* 日
* @param hours
* 时
* @param minutes
* 钟
* @param seconds
* 秒
*/
public static long getTimeInMillis(int year, int month, int day, int hours, int minutes, int seconds) {
Calendar calendar = Calendar.getInstance();
calendar.setTimeZone(DEFAULT_SERVER_TIME_ZONE);
calendar.set(year, month - 1, day, hours, minutes, seconds);
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.getDefault());
format.setTimeZone(DEFAULT_SERVER_TIME_ZONE);
try {
return format.parse(format.format(calendar.getTime())).getTime();
} catch (ParseException e) {
e.printStackTrace();
return 0;
}
}
}
