JavaFX Fundamentals - Java 8 Recipes - page 549

width.set(100);
height.set(700);
System.out.println("After - Width and Height : "
+ width.get() + " " + height.get());
System.out.println("After - Area of the
Rectangle: " + area.getValue());
System.out.println();
System.out.println("A Volume of a Sphere [low
level API]");
// volume = 4/3 * pi r^3
final DoubleProperty radius = new
SimpleDoubleProperty(2);
DoubleBinding volumeOfSphere = new
DoubleBinding() {
{
super.bind(radius);
}
@Override
protected double computeValue() {
return (4 / 3 * Math.PI
* Math.pow(radius.get(), 3));
}
};
System.out.println("Current - radius for Sphere:
" + radius.get());
System.out.println("Current - volume for Sphere:
" + volumeOfSphere.get());
System.out.println("Modifying DoubleProperty
radius");
radius.set(50);