Class Point

  • public class Point
extends java.lang.Object
    Point.java This program implements the following extension of Programming Project 3.4 (page 101):
    Defines a class, named Point, to represent a point on the Cartesian plane, making use of the point's x and y coordinates, both of type double.
    Author:
    CS230 Staff (SK)

    • Field Summary

      Fields 
      Modifier and Type Field Description
      (package private) double TOLERANCE  

    • Constructor Summary

      Constructors 
      Constructor Description
      Point​(double xCoord, double yCoord)
      Given two doubles, it creates a Point.

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean areEquidistant​(Point p2, Point p3)
      Checkes whether this point is at equal distance from the two inputted points.
      Returns true if the two points are practically equidistant, i.e.
      double findDistance​(Point other)
      Finds and returns the distance between this (the invoking) point and the input one.
      double getX()
      Returns the x-coordinate of this point.
      double getY()
      Returns the y-coordinate of this point.
      static void main​(java.lang.String[] args)
      Driver method, used to test the class.
      static Point readPoint​(java.util.Scanner s)
      Reads from the input scanner, two double numbers, to define a Point.
      void setX​(double newX)
      Sets the x-coordinate of this point.
      void setY​(double newY)
      Sets the y-coordinate of this point.
      java.lang.String toString()
      Provides a string representation of a Point

      • Methods inherited from class java.lang.Object

        clone, equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

    • Constructor Detail

      • Point

        public Point​(double xCoord,
             double yCoord)
        Given two doubles, it creates a Point.
        Parameters:
        xCoord - The x-coordinate of the point
        yCoord - The y-coordinate of the point

    • Method Detail

      • getX

        public double getX()
        Returns the x-coordinate of this point.
        Returns:
        The x-coordinate of this point

      • setX

        public void setX​(double newX)
        Sets the x-coordinate of this point.
        Parameters:
        newX - The new x-coordinate of this point

      • getY

        public double getY()
        Returns the y-coordinate of this point.
        Returns:
        The y-coordinate of this point

      • setY

        public void setY​(double newY)
        Sets the y-coordinate of this point.
        Parameters:
        newY - The new y-coordinate of this point

      • findDistance

        public double findDistance​(Point other)
        Finds and returns the distance between this (the invoking) point and the input one.
        Parameters:
        other - The other point
        Returns:
        The distance between this point and the inputed one

      • areEquidistant

        public boolean areEquidistant​(Point p2,
                              Point p3)
        Checkes whether this point is at equal distance from the two inputted points.
        Returns true if the two points are practically equidistant, i.e. their distance is less than TOLERANCE, false otherwise.
        Parameters:
        p2 - The second point
        p3 - the third point
        Returns:
        true if the second point and the third point have -practically- the same distance from this point

      • readPoint

        public static Point readPoint​(java.util.Scanner s)
        Reads from the input scanner, two double numbers, to define a Point. It's used within the main().
        Parameters:
        s - the Scanner object to be used for reading user input
        Returns:
        The point entered by the user

      • toString

        public java.lang.String toString()
        Provides a string representation of a Point
        Overrides:
        toString in class java.lang.Object
        Returns:
        The object state

      • main

        public static void main​(java.lang.String[] args)
        Driver method, used to test the class.