// Improved point client: this version takes
// advantage of some additional functionality
// that we've added to the Point class:
// - constructors
// - toString()
// - distanceFrom(Point other) method
//
// Note that since I called this version of the Point class
// Point2, I had to rename the object everywhere:
public class PointClient2 {
   public static void main(String[] args) {
      // Creating a constructor in the Point class
      // lets us simply the creation of a point:
      // Point p1 = new Point();
      // p1.x = 3;
      // p1.y = 5; --> turns into:
      Point2 p1 = new Point2(3, 5);
      
      // Adding a toString() method lets us simply
      // printing out a Point:
      // System.out.println("p1.x = " + p1.x + ", p1.y = " + p1.y);
      // turns into:
      System.out.println("p1 = " + p1);
      p1.translate(2, 8);
      System.out.println("p1 = " + p1);
      
      System.out.println("p1's distance from origin = " + p1.distanceFromOrigin());
      
      Point2 p2 = new Point2(10, -5);      
      System.out.println("p2 = " + p2);
      p2.translate(-5, 16);
      System.out.println("p2 = " + p);
      
      System.out.println("p2's distance from origin = " + p2.distanceFromOrigin());

      // Implementing a distanceFrom method in the Point
      // class allows us to ask one Point how far it is
      // from another:
      double distance = p1.distanceFrom(p2);
      System.out.println("p1 -> p2 = " + distance);
   }
}









// procedural programming
   // main method, run, DO some stuff
   
// Object-Oriented programming (OOPSLA)
   // objects, conversations inbetween different kinds of objects
  
// Objects
   // Scanners, Files, PrintStreams, Graphics, DrawingPanel
   // group related data together
   // state --> stuff we need to remember
   // behavior --> things we can ask our object to do

// Scanner
   // state --> what file it's reading, cursor
   // behavior --> nextLine(), next(), nextInt(), hasNext()

// Clients v. Implementors