package DateUtil;

import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date;

import org.junit.Test;

public class DateUtils {     public static String getNextDayFirstTime(Date timeDate)     {         // SimpleDateFormat f = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");         // Date timeDate = f.parse(time);         Calendar calendar = Calendar.getInstance();         calendar.setTime(timeDate);         calendar.add(Calendar.DAY_OF_MONTH, 1);         SimpleDateFormat f2 = new SimpleDateFormat("yyyy-MM-dd");                  return f2.format(calendar.getTime()) + " 00:00:00";              }     //測試     @Test     public void test()         throws ParseException     {                  SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");         Date parse = sdf.parse("2018-07-31 14:53:45");         String nextDayFirstTime = this.getNextDayFirstTime(parse);         System.out.println(nextDayFirstTime);     } }