/* The Point class represents a point in two dimensional space */
public class Point {
  private int x; // The x coordinate of the point
  private int y; // The y coordinate of the point

  // Creates a new point with the passed coordinates
  public Point(int x, int y) {
    this.x = x;
    this.y = y;
  }

  // post: returns the x coordinate of this point
  public getX() {
    return this.x;
  }

  // post: returns the y coordinate of this point
  public getY() {
    return this.y;
  }

  // pre : x >= 0, y >= 0 (throws IllegalArgumentException otherwise)
  // post: sets the point coordinates to the passed x and y
  public void setLocation(int x, int y) {
    if (x < 0 || y < 0) {
      throw new IllegalArgumentException();
    }
    this.x = x;
    this.y = y;
  }

  // pre : other != null
  // post: returns the distance between this and other
  // on the cartesian plane
  public double distance(Point other) {
    return Math.sqrt(
        Math.pow(this.x - other.x, 2) +
        Math.pow(this.y - other.x, 2));
  }

  // post: returns a string representation of this, in the form
  //       (x, y)
  public String toString() {
    return "(" + this.x + ", " + this.y + ")";
  }
}