[Java] How do you create a Point2D? Suppose p1 and p2 are two instances of Point2D? How do you obtain the distance between the two points?

You can create a Point2D by import the class javafx.geometry.Point2D, and then create a Point2D Object by calling the Point2D constructor with x and y coordinates. And there is the example to create instance two instances named p1 and p2 of Point2D :

    Point2D p1 = new Point2D (1.2,2.0);
    Point2D p2 = new Point2D (3,5);

To obtain the distance between two points, we can call distance() method to calculate :

    System.out.println(“The distance between Point2D p1 and p2 is ”+ p1.distance(p2));

Remarks
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Reference:
Introduction to Java Programming, Y. Daniel Liang 9.15