Java Week Day getPreviousOrNextDay(String time, int dayNum)

Description

get Previous Or Next Day

License

Apache License

Declaration

public static String getPreviousOrNextDay(String time, int dayNum) throws ParseException 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.text.ParseException;
import java.text.SimpleDateFormat;

import java.util.Date;
import java.util.GregorianCalendar;

public class Main {
    public static final String DEFAULT_FORMAT = "yyyy-MM-dd HH:mm:ss";
    public static final String DEFAULT_FORMAT_NOHOUR = "yyyy-MM-dd";

    public static String getPreviousOrNextDay(String time, int dayNum) throws ParseException {
        SimpleDateFormat df = new SimpleDateFormat(DEFAULT_FORMAT_NOHOUR);
        Date date = df.parse(time);
        GregorianCalendar currentDate = new GregorianCalendar();
        currentDate.setTime(date);//from  ww  w . j  a va 2s. c o  m
        currentDate.add(GregorianCalendar.DATE, dayNum);

        Date monday = currentDate.getTime();
        String preMonday = df.format(monday);
        return preMonday;
    }

    public static long getTime(String dateStr, String formate) {
        Date date;
        try {
            date = getDate(dateStr, formate);
            return date.getTime();
        } catch (ParseException e) {
            return -1;
        }
    }

    public static long getTime(String dateStr) {
        return getTime(dateStr, DEFAULT_FORMAT);
    }

    public static String getDate(Date date, String formate) {
        SimpleDateFormat sf = new SimpleDateFormat(formate);
        return sf.format(date);
    }

    public static Date getDate(String dateStr, String formate) throws ParseException {
        SimpleDateFormat sf = new SimpleDateFormat(formate);
        return sf.parse(dateStr);
    }
}

Related

1. getNextDayOfweek()
2. getPreDay()
3. getPreviousDay(long date, int startOfWeek)
4. getPreviousFriday(String date)
5. getPreviousMonday(Date date, int days)
6. getPreWeekLastDay()
7. getShortWeekday(int dayOfWeek)
8. getShortWeekday(String day)
9. getSQLForWeekSunday(String weekString)