public SpinnerDateModel() 
{
        this(new Date(), null, null, Calendar.DAY_OF_MONTH);
}

Constructs a SpinnerDateModel whose initial value is the current date, calendarField is equal to Calendar.DAY_OF_MONTH, and for which there are no start/end limits.

 public SpinnerDateModel(Date value,
    Comparable start,
    Comparable end,
    int calendarField) 
{
        if (value == null) {
            throw new IllegalArgumentException("value is null");
        }
        if (!calendarFieldOK(calendarField)) {
            throw new IllegalArgumentException("invalid calendarField");
        }
        if (!(((start == null) || (start.compareTo(value) < = 0)) &&
              ((end == null) || (end.compareTo(value)  >= 0)))) {
            throw new IllegalArgumentException("(start < = value < = end) is false");
        }
        this.value = Calendar.getInstance();
        this.start = start;
        this.end = end;
        this.calendarField = calendarField;
        this.value.setTime(value);
}

Creates a SpinnerDateModel that represents a sequence of dates between start and end. The nextValue and previousValue methods compute elements of the sequence by advancing or reversing the current date value by the calendarField time unit. For a precise description of what it means to increment or decrement a Calendar field, see the add method in java.util.Calendar.

The start and end parameters can be null to indicate that the range doesn't have an upper or lower bound. If value or calendarField is null, or if both start and end are specified and mininum > maximum then an IllegalArgumentException is thrown. Similarly if (minimum <= value <= maximum) is false, an IllegalArgumentException is thrown.

Parameters:

value - the current (non null) value of the model

start - the first date in the sequence or null

end - the last date in the sequence or null

calendarField - one of
• Calendar.ERA
• Calendar.YEAR
• Calendar.MONTH
• Calendar.WEEK_OF_YEAR
• Calendar.WEEK_OF_MONTH
• Calendar.DAY_OF_MONTH
• Calendar.DAY_OF_YEAR
• Calendar.DAY_OF_WEEK
• Calendar.DAY_OF_WEEK_IN_MONTH
• Calendar.AM_PM
• Calendar.HOUR
• Calendar.HOUR_OF_DAY
• Calendar.MINUTE
• Calendar.SECOND
• Calendar.MILLISECOND


Throws:

IllegalArgumentException - if value or calendarField are null, if calendarField isn't valid, or if the following expression is false: (start <= value <= end).

Also see:

Calendar#add
setValue
setStart
setEnd
setCalendarField

 public int getCalendarField() 
{
        return calendarField;
}

Returns the Calendar field that is added to or subtracted from by the nextValue and previousValue methods.

 public Date getDate() 
{
        return value.getTime();
}

Returns the current element in this sequence of Dates. This method is equivalent to (Date)getValue.

 public Comparable getEnd() 
{
        return end;
}

Returns the last Date in the sequence.

 public Object getNextValue() 
{
        Calendar cal = Calendar.getInstance();
        cal.setTime(value.getTime());
        cal.add(calendarField, 1);
        Date next = cal.getTime();
        return ((end == null) || (end.compareTo(next)  >= 0)) ? next : null;
}

Returns the next Date in the sequence, or null if the next date is after end.

 public Object getPreviousValue() 
{
        Calendar cal = Calendar.getInstance();
        cal.setTime(value.getTime());
        cal.add(calendarField, -1);
        Date prev = cal.getTime();
        return ((start == null) || (start.compareTo(prev) < = 0)) ? prev : null;
}

Returns the previous Date in the sequence, or null if the previous date is before start.

 public Comparable getStart() 
{
        return start;
}

Returns the first Date in the sequence.

 public Object getValue() 
{
        return value.getTime();
}

Returns the current element in this sequence of Dates.

 public  void setCalendarField(int calendarField) 
{
        if (!calendarFieldOK(calendarField)) {
            throw new IllegalArgumentException("invalid calendarField");
        }
        if (calendarField != this.calendarField) {
            this.calendarField = calendarField;
            fireStateChanged();
        }
}

Changes the size of the date value change computed by the nextValue and previousValue methods. The calendarField parameter must be one of the Calendar field constants like Calendar.MONTH or Calendar.MINUTE. The nextValue and previousValue methods simply move the specified Calendar field forward or backward by one unit with the Calendar.add method. You should use this method with care as some UIs may set the calendarField before commiting the edit to spin the field under the cursor. If you only want one field to spin you can subclass and ignore the setCalendarField calls.

 public  void setEnd(Comparable end) 
{
        if ((end == null) ? (this.end != null) : !end.equals(this.end)) {
            this.end = end;
            fireStateChanged();
        }
}

Changes the upper limit for Dates in this sequence. If start is null, then there is no upper limit. No bounds checking is done here: the new start value may invalidate the (start <= value <= end) invariant enforced by the constructors. This is to simplify updating the model. Naturally, one should ensure that the invariant is true before calling the nextValue, previousValue, or setValue methods.

Typically this property is a Date however it's possible to use Comparable with a compareTo method for Dates. See setStart for an example.

This method fires a ChangeEvent if the end has changed.

 public  void setStart(Comparable start) 
{
        if ((start == null) ? (this.start != null) : !start.equals(this.start)) {
            this.start = start;
            fireStateChanged();
        }
}

Changes the lower limit for Dates in this sequence. If start is null, then there is no lower limit. No bounds checking is done here: the new start value may invalidate the (start <= value <= end) invariant enforced by the constructors. This is to simplify updating the model. Naturally one should ensure that the invariant is true before calling the nextValue, previousValue, or setValue methods.

Typically this property is a Date however it's possible to use a Comparable with a compareTo method for Dates. For example start might be an instance of a class like this:

MyStartDate implements Comparable {
long t = 12345;
public int compareTo(Date d) {
return (t < d.getTime() ? -1 : (t == d.getTime() ? 0 : 1));
}
public int compareTo(Object o) {
return compareTo((Date)o);
}
}

Note that the above example will throw a ClassCastException if the Object passed to compareTo(Object) is not a Date.

This method fires a ChangeEvent if the start has changed.

 public  void setValue(Object value) 
{
        if ((value == null) || !(value instanceof Date)) {
            throw new IllegalArgumentException("illegal value");
        }
        if (!value.equals(this.value.getTime())) {
            this.value.setTime((Date)value);
            fireStateChanged();
        }
}

Sets the current Date for this sequence. If value is null, an IllegalArgumentException is thrown. No bounds checking is done here: the new value may invalidate the (start <= value < end) invariant enforced by the constructors. Naturally, one should ensure that the (start <= value <= maximum) invariant is true before calling the nextValue, previousValue, or setValue methods.

This method fires a ChangeEvent if the value has changed.