public static BooleanBinding equal (ObservableNumberValue op1, ObservableNumberValue op2)

Creates a new javafx.beans.binding.BooleanBinding that holds true if the values of two instances of javafx.beans.value.ObservableNumberValue are equal.

When comparing floating-point numbers it is recommended to use the equal(ObservableNumberValue, ObservableNumberValue, double) method that allows a small tolerance.

Parameters:
op1     the first operand
op2     the second operand

Returns:  the new BooleanBinding

Exceptions:
NullPointerException     if one of the operands is null