Examples of java.util.Calendar.clear()

java.util.Calendar.clear()
Sets the given calendar field value and the time value (millisecond offset from the Epoch) of this Calendar undefined. This means that {@link #isSet(int) isSet(field)} will return false, andthe date and time calculations will treat the field as if it had never been set. A Calendar implementation class may use the field's specific default value for date and time calculations.
The {@link #HOUR_OF_DAY}, {@link #HOUR} and {@link #AM_PM}fields are handled independently and the the resolution rule for the time of day is applied. Clearing one of the fields doesn't reset the hour of day value of this Calendar. Use {@link #set(int,int) set(Calendar.HOUR_OF_DAY, 0)} to reset the hourvalue. @param field the calendar field to be cleared. @see #clear()

    int doy = ds.readAttributeInteger(null, "DAY", -1);
    double time = ds.readAttributeDouble(null, "TIME", Double.NaN);


    if ((year >0) && (doy > 0) && !Double.isNaN(time)) {
      Calendar cal = new GregorianCalendar(TimeZone.getTimeZone("UTC"));
      cal.clear();
      cal.set(Calendar.YEAR, year);
      cal.set(Calendar.DAY_OF_YEAR, doy);


      int hour = (int) time;
      cal.set(Calendar.HOUR_OF_DAY, hour);

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   if (index > 0)
      isodate = isodate.substring(0, index) + "T" + isodate.substring(index+1);
   StringTokenizer st = new StringTokenizer(isodate, "-T:.+Z", true);


   Calendar calendar = new GregorianCalendar(TimeZone.getTimeZone("UTC"));
   calendar.clear();
   try {
       // Year
       if (st.hasMoreTokens()) {
      int year = Integer.parseInt(st.nextToken());
      calendar.set(Calendar.YEAR, year);

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     * Tests this class.
     */
    public static void main(final String[] args) throws Exception {
        final TimeZone tz = TimeZone.getTimeZone("UTC");
        final Calendar calendar = Calendar.getInstance(tz);
        calendar.clear();
        calendar.set(1970, 0, 1);
        new TimeScaleUnit(SECOND, calendar.getTime());
    }
}

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        short month = grabShort(data, 38);
        short day = grabShort(data, 40);
        short hour = grabShort(data, 42);
        short minute = grabShort(data, 44);
        short second = grabShort(data, 46);
        calendar.clear();
        calendar.set(year, month - 1, day, hour, minute, second);
        dataTime = calendar.getTime();


        flightId = new String(data, 48, 8).trim();
        facilityName = new String(data, 56, 8).trim();

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        facilityName = new String(data, 56, 8).trim();


        year = grabShort(data, 64);
        month = grabShort(data, 66);
        day = grabShort(data, 68);
        calendar.clear();
        calendar.set(year, month - 1, day);
        fileGenTime = calendar.getTime();


        nSensors = grabShort(data, 70);

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        if (month < 1 || month > 12)
            {if (true) throw new ParseException("invalid month in timestamp");}
        if (day < 1 || day > 31)
            {if (true) throw new ParseException("invalid day in timestamp");}
        Calendar    calendar = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
        calendar.clear();
        calendar.set(year, month-1, day);
        {if (true) return calendar;}
    throw new Error("Missing return statement in function");
  }

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  {
    Calendar calendar = Calendar.getInstance();
    calendar.setTime(date);
    int year = calendar.get(Calendar.YEAR);
    int month = calendar.get(Calendar.MONTH);
    calendar.clear();
    calendar.set(Calendar.YEAR, year);
    calendar.set(Calendar.MONTH, month);
    return calendar.getTime();
  }

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  public static final Date truncateToYear(Date date)
  {
    Calendar calendar = Calendar.getInstance();
    calendar.setTime(date);
    int year = calendar.get(Calendar.YEAR);
    calendar.clear();
    calendar.set(Calendar.YEAR, year);
    return calendar.getTime();
  }


}

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  {
    Calendar calendar = Calendar.getInstance();
    calendar.setTime(date);
    int year = calendar.get(Calendar.YEAR);
    int month = calendar.get(Calendar.MONTH);
    calendar.clear();
    calendar.set(Calendar.YEAR, year);
    calendar.set(Calendar.MONTH, month);
    return calendar.getTime();
  }

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    private Date myJanuarySecond;


    protected void setUp() throws Exception {
        Calendar c = (Calendar) GregorianCalendar.getInstance().clone();
        c.clear();
        c.set(Calendar.YEAR, 2000);
        c.set(Calendar.MONTH, Calendar.JANUARY);
        c.set(Calendar.DAY_OF_MONTH, 1);
        myJanuaryFirst = c.getTime();
        //

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