JDoubleSpinner 
    class JDoubleSpinner(value: Double = 0.0, minValue: Double? = null, maxValue: Double? = null, stepSize: Double = 0.1) : JNumberSpinner<Double> (source)
A JNumberSpinner for doubles.
Note that setting the minimum or maximum value to a very large number may cause the parent component's width to be overly large.
Parameters
value
the default value
minValue 
the smallest number that may be represented
maxValue 
the largest number that may be represented
stepSize 
the default value to increment and decrement by