Returns the next number in the sequence.
Returns the next number in the sequence.
value + stepSize or null if the sum
exceeds maximum.
Returns the previous number in the sequence.
Returns the previous number in the sequence.
value - stepSize, or
null if the sum is less
than minimum.
Sets the current value for this sequence.
Sets the current value for this sequence. If value is
null, or not an Option, an
IllegalArgumentException is thrown. No
bounds checking is done here.
This method fires a ChangeEvent if the value has changed.
the current (non null) Option
for this sequence
IllegalArgumentException if value is
null or not a Option