Java Babylonian Method – SQRT()

Java implementation of Babylonian Method – method to calculate square root of positive numbers.

IN
3
0.0000000001
OUT
sqrt(3.0) = 0.3
sqrt(3.0) = 5.15
sqrt(3.0) = 2.86626213592233
sqrt(3.0) = 1.956460731776899
sqrt(3.0) = 1.74492093914502
sqrt(3.0) = 1.7320982711195376
sqrt(3.0) = 1.7320508082191837

import java.util.Scanner;

// ? 2018 TheFlyingKeyboard and released under MIT License 
// theflyingkeyboard.net
public class Main {
    public static void main(String[] args) {
        double number = 0.0;
        double precision = 0.0;
        Scanner scanner = new Scanner(System.in);

        System.out.println("Enter number to square root");
        number = scanner.nextDouble();

        System.out.println("Enter precision");
        precision = scanner.nextDouble();

        if (number < 0)
        {
            System.out.println("Number must be >= 0");
            return;
        }

        if (number == 0)
        {
            System.out.println("sqrt(0) = 0");
            return;
        }

        double x = number / 10;
        double y = number / x;

        do
        {
            System.out.println("sqrt(" + number + ") = " + x);
            x = (x + y) / 2;
            y = number / x;
        } while (x - y > precision);
    }
}