Write a program that asks the user to enter the coordinates of two points (x_1,

Question

Write a program that asks the user to enter the coordinates of two points (x_1, y_2) and (x_2, y_2), calculates the distance between the points using the formula = square root (x_2 - x_1)^2 + (y_2 - y_1)^2, and displays the distance. The display produced by your program should be: The distance between the points (xxx.xx, xxx.xx) and (xxx.xx, xxx.xx) is xxx.xxxx where xxx. xx denotes that the displayed value should be placed in a field wide enough for three places to the left of the decimal point and two places to the right of it; xxx. xxxx denotes that the displayed value should be placed in a field wide enough for three places to the left of the decimal point and four places to the right of it

Explanation / Answer

import java.util.Scanner;

//distance = square root of [(x2-x1)squared + (y2-y1)squared]

public class PointDistance

{

    public static void main(String[] args)

    {           

        double distance(double x1, double y1, double x2, double y2)

            {

            return math.sqrt((x1-x2)(x1-x2) + (y1-y2)(y1-y2));            

                         }

        double x1, x2, y, y2;

        double distance;       

        Scanner scan = new Scanner (System.in);        

        System.out.println("Enter the x coordinate for point 1: ");

        x1 = scan.nextDouble();        

        System.out.println("Enter the y coordinate for point 1: ");

        y1 = scan.nextDouble();        

        System.out.println("Enter the x coordinate for point 2: ");

        x2 = scan.nextDouble();        

        System.out.println("Enter the y coordinate for point 2: ");

        y2 = scan.nextDouble();        

        distance = distance(x1,y1,x2,y2);        

        System.out.println("The distance between the two points is " + distance + " .");

       }

}

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