Формула расстояния, показывающая "Утечка ресурсов:" сканирование "никогда не закрывается"

Question

import java.util.Scanner;
//distance = square root of [(x2-x1)squared + (y2-y1)squared + (z2-z1)squared]

public class FirstCode
{
    static double distance(double x1, double y1, double z1, double x2, double y2, double z2)
    {
        return Math.sqrt((x2-x1)*(x2-x1) + (y2-y1)*(y2-y1) + (z2-z1)*(z2-z1));
    }

    public static void main(String[] args)
    {   
        double x2, x1, y2, y1, z2, z1;
        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();

        System.out.println("Enter the z coordinate for point 3: ");
        z1 = scan.nextDouble();

        System.out.println("Enter the z coordinate for point 3: ");
        z2 = scan.nextDouble();
        distance = distance(x1,y1,x2,y2,z1,z2);
        System.out.println("The distance between the two points is " + distance + " .");
    }
}

Answer 1

Просто закройте сканер в конце.

scan.close();