Example usage for java.util Calendar add

Introduction

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

Prototype

public abstract void add(int field, int amount);

Source Link

Document

Adds or subtracts the specified amount of time to the given calendar field, based on the calendar's rules.

Usage

From source file:com.bigdata.journal.jini.ha.AbstractHA3BackupTestCase.java

/**
 * We need to set the time at which the {@link DefaultSnapshotPolicy} runs
 * to some point in the future in order to avoid test failures due to
 * violated assumptions when the policy runs up self-triggering (based on
 * the specified run time) during a CI run.
 * <p>//from  w w w.  j  av  a  2  s  .  c  o  m
 * We do this by adding one hour to [now] and then converting it into the
 * 'hhmm' format as an integer.
 * 
 * @return The "never run" time as hhmm.
 */
static protected String getNeverRunSnapshotTime() {

    // Right now.
    final Calendar c = Calendar.getInstance();

    // Plus an hour.
    c.add(Calendar.HOUR_OF_DAY, 1);

    // Get the hour.
    final int hh = c.get(Calendar.HOUR_OF_DAY);

    // And the minutes.
    final int mm = c.get(Calendar.MINUTE);

    // Format as hhmm.
    final String neverRun = "" + hh + (mm < 10 ? "0" : "") + mm;

    return neverRun;

}

From source file:Main.java

public static String futureDate(int add) {
    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMddHHmmss");
    java.util.Calendar calendar = java.util.Calendar.getInstance();
    java.util.Date date = null;/*from   ww w  .j ava 2s.  c om*/
    try {
        //date = simpleDateFormat.parse(simpleDateFormat.format(new Date())); 
        java.util.Date currentTime = calendar.getTime();

        calendar.setTime(currentTime);

        // add(Calendar.DAY_OF_MONTH, -5).
        calendar.add(java.util.Calendar.DAY_OF_YEAR, add);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return simpleDateFormat.format(calendar.getTime());

}

From source file:Main.java

public static String previosDate(int sub) {
    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMddHHmmss");
    java.util.Calendar calendar = java.util.Calendar.getInstance();
    java.util.Date date = null;/*from   w ww. ja v a  2  s  .  co m*/
    try {
        //date = simpleDateFormat.parse(simpleDateFormat.format(new Date())); 
        java.util.Date currentTime = calendar.getTime();

        calendar.setTime(currentTime);

        // add(Calendar.DAY_OF_MONTH, -5).
        calendar.add(java.util.Calendar.DAY_OF_YEAR, -sub);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return simpleDateFormat.format(calendar.getTime());

}

From source file:net.granoeste.commons.util.DateUtils.java

/**
 * ???//from w  ww  .j a v a  2  s  .c  o  m
 *
 * @param cal
 * @param amount ex) last week : -1. the current week : 0. the next week : 1
 */
public static void shiftDateOnMondayOfTheWeek(final Calendar cal, final int amount) {

    cal.add(Calendar.WEEK_OF_YEAR, amount);
    if (cal.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY) {
        cal.add(Calendar.DATE, -6);
    } else {
        cal.add(Calendar.DATE, -cal.get(Calendar.DAY_OF_WEEK) + 2);
    }
}

From source file:com.tohours.imo.util.TohoursUtils.java

public static String monthFirstDay(int n) {
    Calendar calendar = Calendar.getInstance();
    calendar.add(Calendar.MONTH, n);
    return calendar.get(Calendar.YEAR) + "-" + formatNum(calendar.get(Calendar.MONTH) + 1) + "-01";
}

From source file:net.firejack.platform.core.utils.DateUtils.java

/**
 * Truncates the date to week level// w  w w .  ja v  a 2s  .com
 * @param date - date to be truncated
 * @return truncated date
 */
public static Date truncateDateToWeek(Date date) {
    Calendar cal = new GregorianCalendar();
    cal.setTime(DateUtils.truncate(date, Calendar.DAY_OF_MONTH));
    while (cal.get(Calendar.DAY_OF_WEEK) != Calendar.SUNDAY) {
        cal.add(Calendar.DAY_OF_MONTH, -1);
    }
    return cal.getTime();
}

From source file:gobblin.source.extractor.utils.Utils.java

public static Date addDaysToDate(Date datetime, int days) {
    Calendar calendar = Calendar.getInstance();
    calendar.setTime(datetime);//  www  . ja v  a2 s .c o m
    calendar.add(Calendar.DATE, days);
    return calendar.getTime();
}

From source file:gobblin.source.extractor.utils.Utils.java

public static Date addHoursToDate(Date datetime, int hours) {
    Calendar calendar = Calendar.getInstance();
    calendar.setTime(datetime);//w w w  .jav a 2  s.  com
    calendar.add(Calendar.HOUR, hours);
    return calendar.getTime();
}

From source file:gobblin.source.extractor.utils.Utils.java

public static Date addSecondsToDate(Date datetime, int seconds) {
    Calendar calendar = Calendar.getInstance();
    calendar.setTime(datetime);//  w w w .j a v a2s.co  m
    calendar.add(Calendar.SECOND, seconds);
    return calendar.getTime();
}

From source file:com.jabyftw.easiercommands.Util.java

/**
 * Source: Essentials (found through Ban-Management)
 * <b>Letters used:</b> y mo w d h m s
 *
 * @param time string with the time, eg: "3w4h" - three weeks and four hours
 * @return the time in milliseconds/*w  w w . j  av a  2  s. c  o m*/
 * @see <a href=https://github.com/BanManagement/BanManager/blob/master/src/main/java/me/confuser/banmanager/util/DateUtils.java>Credits to Essentials</a>
 */
public static long parseTimeDifference(@NotNull String time) {
    Pattern timePattern = Pattern.compile("(?:([0-9]+)\\s*y[a-z]*[,\\s]*)?" + "(?:([0-9]+)\\s*mo[a-z]*[,\\s]*)?"
            + "(?:([0-9]+)\\s*w[a-z]*[,\\s]*)?" + "(?:([0-9]+)\\s*d[a-z]*[,\\s]*)?"
            + "(?:([0-9]+)\\s*h[a-z]*[,\\s]*)?" + "(?:([0-9]+)\\s*m[a-z]*[,\\s]*)?"
            + "(?:([0-9]+)\\s*(?:s[a-z]*)?)?", Pattern.CASE_INSENSITIVE);
    Matcher matcher = timePattern.matcher(time);

    int years = 0, months = 0, weeks = 0, days = 0, hours = 0, minutes = 0, seconds = 0;
    boolean found = false;

    while (matcher.find()) {
        if (matcher.group() == null || matcher.group().isEmpty()) {
            continue;
        }

        for (int i = 0; i < matcher.groupCount(); i++) {
            if (matcher.group(i) != null && !matcher.group(i).isEmpty()) {
                found = true;
                break;
            }
        }

        if (found) {
            if (matcher.group(1) != null && !matcher.group(1).isEmpty())
                years = Integer.parseInt(matcher.group(1));
            if (matcher.group(2) != null && !matcher.group(2).isEmpty())
                months = Integer.parseInt(matcher.group(2));
            if (matcher.group(3) != null && !matcher.group(3).isEmpty())
                weeks = Integer.parseInt(matcher.group(3));
            if (matcher.group(4) != null && !matcher.group(4).isEmpty())
                days = Integer.parseInt(matcher.group(4));
            if (matcher.group(5) != null && !matcher.group(5).isEmpty())
                hours = Integer.parseInt(matcher.group(5));
            if (matcher.group(6) != null && !matcher.group(6).isEmpty())
                minutes = Integer.parseInt(matcher.group(6));
            if (matcher.group(7) != null && !matcher.group(7).isEmpty())
                seconds = Integer.parseInt(matcher.group(7));
            break;
        }
    }

    if (!found)
        throw new IllegalArgumentException("Date can't be parsed");
    if (years > 20)
        throw new IllegalArgumentException("Date is too big");

    Calendar calendar = new GregorianCalendar();

    if (years > 0)
        calendar.add(Calendar.YEAR, years);
    if (months > 0)
        calendar.add(Calendar.MONTH, months);
    if (weeks > 0)
        calendar.add(Calendar.WEEK_OF_YEAR, weeks);
    if (days > 0)
        calendar.add(Calendar.DAY_OF_MONTH, days);
    if (hours > 0)
        calendar.add(Calendar.HOUR_OF_DAY, hours);
    if (minutes > 0)
        calendar.add(Calendar.MINUTE, minutes);
    if (seconds > 0)
        calendar.add(Calendar.SECOND, seconds);

    return calendar.getTimeInMillis() - System.currentTimeMillis();
}