Java Hour getHourBeforeTime(int hour)

Description

get Hour Before Time

License

Open Source License

Declaration

public static Date getHourBeforeTime(int hour) 

Method Source Code

//package com.java2s;

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

public class Main {

    public static Date getHourBeforeTime(int hour) {

        Calendar now = Calendar.getInstance();
        now.set(Calendar.HOUR_OF_DAY, now.get(Calendar.HOUR_OF_DAY) - hour);
        return now.getTime();
    }/*from  ww  w  .j  av  a  2s  .  c o m*/

    public static String getTime(Calendar c) {
        return getDate(c.getTime(), "HH:mm:ss");
    }

    public static String getDate() {
        return getDate(getCurDate(), "yyyy-MM-dd");
    }

    public static String getDate(Date date, String format) {

        String dtstr = "";
        if (date == null) {
            return dtstr;
        }

        if (format == null || "".equals(format.trim())) {
            format = "yyyy-MM-dd";
        }

        SimpleDateFormat sdf = new SimpleDateFormat(format);
        dtstr = sdf.format(date);
        return (dtstr == null ? "" : dtstr);

    }

    public static String getDate(Date date) {
        return getDate(date, "yyyy-MM-dd");
    }

    public static Date getDate(long time) {

        Calendar c = getCurCalendar();
        c.setTimeInMillis(time);

        return c.getTime();
    }

    public static Date getCurDate() {
        return getCurCalendar().getTime();
    }

    public static Calendar getCurCalendar() {
        return Calendar.getInstance();
    }
}

Related

1. getHour12(Date date)
2. getHourAfter(Date date, int hour)
3. getHourAfter(final Date _from, final int _hours)
4. getHourAndMin(long time)
5. getHourAndMinutes(Date dt)
6. getHourByZore(int hour)
7. getHourDetails(int timeInfo)
8. getHourFormatedTwoDigit()
9. getHourFromDate(Date date)