Example usage for java.util Calendar set

Introduction

In this page you can find the example usage for java.util Calendar set.

Prototype

public void set(int field, int value)

Source Link

Document

Sets the given calendar field to the given value.

Usage

From source file:Main.java

public static int getDays(int year, int month) {
    Calendar calendar = Calendar.getInstance();
    calendar.clear();//w w w .j  a  va  2  s. c  om
    calendar.set(Calendar.YEAR, year);
    calendar.set(Calendar.MONTH, month - 1);
    int days = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
    return days;
}

From source file:Main.java

public static String getDate(int hour, int min) {
    Date d = new Date();
    Calendar now = Calendar.getInstance();
    now.setTime(d);//from w  w w. j  a  va  2s.com
    now.set(Calendar.HOUR, now.get(Calendar.HOUR) + hour);
    now.set(Calendar.MINUTE, now.get(Calendar.MINUTE) + min);

    SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd HH/mm");

    return sdf.format(now.getTime());
}

From source file:Main.java

public static Date getEndDateOfMonth(int year, int month) throws ParseException {

    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
    Calendar cal = Calendar.getInstance();
    cal.set(Calendar.MONTH, month);
    cal.set(Calendar.YEAR, year);

    String enddat = year + "-" + (month + 1) + "-" + cal.getActualMaximum(Calendar.DATE);
    Date enddate = sdf.parse(enddat);

    return enddate;

}

From source file:Main.java

public static Calendar getNextStart() {
    Calendar cc = Calendar.getInstance();
    cc.roll(Calendar.HOUR, 1);// w ww .j  av  a2  s .c  o  m
    cc.set(Calendar.MINUTE, 0);
    cc.set(Calendar.SECOND, 0);
    return cc;
}

From source file:Main.java

public static Date getStartDateOfMonth(int year, int month) throws ParseException {

    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
    Calendar cal = Calendar.getInstance();
    cal.set(Calendar.MONTH, month);
    cal.set(Calendar.YEAR, year);

    String startdat = year + "-" + (month + 1) + "-01";
    Date startdate = sdf.parse(startdat);

    return startdate;

}

From source file:Main.java

public static Date rewindToBeginningOfMonth(Date date) {
    Calendar cal = buildFromDate(rewindToBeginningOfDay(date));
    cal.set(Calendar.DAY_OF_MONTH, 1);
    return cal.getTime();
}

From source file:Main.java

public static int getFirstDayOfWeek(Date date) {
    int n = getDayOfWeek(date);
    Calendar c = Calendar.getInstance();
    c.setTime(date);//from  ww  w.  j a v  a  2 s  .c o m
    c.set(Calendar.DAY_OF_MONTH, c.get(Calendar.DAY_OF_MONTH) - n + 1);
    return c.get(Calendar.DAY_OF_MONTH);
}

From source file:Main.java

public static Date getFirstDate(Date date) {
    Calendar calendar = Calendar.getInstance();
    calendar.setTime(date);/*from w  ww. j a  v  a2  s  . co m*/
    calendar.set(Calendar.DATE, 1);
    return calendar.getTime();
}

From source file:Main.java

public static long getYearStart() {
    Calendar cal = Calendar.getInstance();
    cal.set(Calendar.DAY_OF_YEAR, 1);
    cal.set(Calendar.HOUR_OF_DAY, 0);
    cal.set(Calendar.MINUTE, 0);//from  www .j  a  v a2  s .  c  om
    cal.set(Calendar.SECOND, 0);
    cal.set(Calendar.MILLISECOND, 0);
    return cal.getTimeInMillis();
}

From source file:Main.java

public static long getTimeInitializeMills(long mills) {
    Calendar c = Calendar.getInstance();
    c.setTimeInMillis(mills);//  w w w . java2  s  .c  o m
    c.set(Calendar.HOUR_OF_DAY, 0);
    c.set(Calendar.MINUTE, 0);
    c.set(Calendar.SECOND, 0);
    c.set(Calendar.MILLISECOND, 0);

    return c.getTimeInMillis();
}