Java Day of getBeforeDate(int day)

Description

get Before Date

License

Apache License

Declaration

public static Date getBeforeDate(int day) throws Exception 

Method Source Code

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

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

public class Main {

    public static Date getBeforeDate(int day) throws Exception {
        Calendar cl = Calendar.getInstance();
        Long clTemp = cl.getTimeInMillis() - day * 24 * 60 * 60 * 1000L;
        cl.setTimeInMillis(clTemp);//from  w  w w  . ja  v a  2s  .  c  om
        return getFormatDate(cl.getTime(), "yyyy-MM-dd");
    }

    public static Date getFormatDate(Date date, String format) throws Exception {
        String dateStr = getDate2String(date, format);
        return getString2Date(dateStr, format);
    }

    public static String getDate2String(Date date, String format) {
        SimpleDateFormat sformat = new SimpleDateFormat(format);
        return sformat.format(date);
    }

    public static Date getString2Date(String date, String format) throws Exception {
        SimpleDateFormat sformat = new SimpleDateFormat(format);
        return sformat.parse(date);
    }
}

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4. getAgeOfCalendar(String birthDayString)
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6. getBeforeOrAfterDay(Date date, String format, Integer days)
7. getBeginEndTimeOfDay(Date day)
8. getBeginOfDay(Date date)
9. getBeginTimeOfDay(Date date, int offset)