Java Month Day getFirstDayOfMonth(Long date)

Description

get First Day Of Month

License

Apache License

Declaration

public static Long getFirstDayOfMonth(Long date) 

Method Source Code

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

import java.util.*;

public class Main {
    public static Long getFirstDayOfMonth(Long date) {
        Calendar cal = Calendar.getInstance();
        cal.setTimeInMillis(date);/*from  w w  w. j  a v  a 2 s. c  o  m*/
        cal.set(Calendar.HOUR_OF_DAY, 0);
        cal.clear(Calendar.MINUTE);
        cal.clear(Calendar.SECOND);
        cal.clear(Calendar.MILLISECOND);
        cal.set(Calendar.DAY_OF_MONTH, Calendar.getInstance().getActualMinimum(Calendar.DAY_OF_MONTH));
        return cal.getTimeInMillis();
    }

    public static Date getFirstDayOfMonth(Date date) {
        long time = getFirstDayOfMonth(date.getTime());
        return new Date(time);
    }
}

Related

1. getFirstDayOfMonth(Date date)
2. getFirstDayOfMonth(Date date)
3. getFirstDayOfMonth(Date date)
4. getFirstDayOfMonth(Date date)
5. getFirstDayOfMonth(Date date)
6. getFirstDayOfNextMonth()
7. getFirstDayStringOfMonth(Date date)
8. getFirstDayStrOfMonth(Date date)
9. getLastMonthDay()