Java Week Day getPreviousFriday(String date)

Description

get Previous Friday

License

Open Source License

Declaration

public static String getPreviousFriday(String date) 

Method Source Code

//package com.java2s;

import java.text.DateFormat;

import java.text.SimpleDateFormat;
import java.util.*;

public class Main {
    public static final String dateFormat = "yyyy-MM-dd";

    public static String getPreviousFriday(String date) {
        Date d = strToDtSimpleFormat(date);
        Calendar cal = Calendar.getInstance();
        cal.setTime(d);/*from w ww  .j  a va2 s .co m*/
        cal.add(Calendar.WEEK_OF_YEAR, -1);
        cal.set(Calendar.DAY_OF_WEEK, Calendar.FRIDAY);
        return dateFormat(cal.getTime());
    }

    public static final Date strToDtSimpleFormat(String strDate) {
        if (strDate == null) {
            return null;
        }

        try {
            return getFormat(dateFormat).parse(strDate);
        } catch (Exception e) {
        }

        return null;
    }

    public static final String dateFormat(Date date) {
        if (date == null) {
            return "";
        }
        return getFormat(dateFormat).format(date);
    }

    public static final DateFormat getFormat(String format) {
        return new SimpleDateFormat(format);
    }

    public static final String format(Date date, String formate) {
        if (date == null) {
            return "";
        }
        return getFormat(formate).format(date);
    }

    public static final String format(Long dateTmie, String formate) {
        Date date = new Date(dateTmie);
        return getFormat(formate).format(date);
    }
}

Related

1. getMondayAfter(Date date)
2. getMondayOfThisWeek()
3. getNextDayOfweek()
4. getPreDay()
5. getPreviousDay(long date, int startOfWeek)
6. getPreviousMonday(Date date, int days)
7. getPreviousOrNextDay(String time, int dayNum)
8. getPreWeekLastDay()
9. getShortWeekday(int dayOfWeek)