package com.javadb.examples;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

public class Main {

    public static void main(String[] args) {

        try {

            

            BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

            String input = reader.readLine();

            

            double number = Double.parseDouble(input);

            

            System.out.println("Square root of input number " + input + " is: " + Math.sqrt(number));

            

            //Not really necessary in this case but since we want to 

            //write clean code...

            reader.close();

            

        } catch (IOException e) {

            e.printStackTrace();

        } catch (NumberFormatException e) {

            System.out.println("Input by user was not a number.");

            e.printStackTrace();

        }

    }

}

 

So if we for example type in 12345, the output from the program looks like:

Square root of input number 12345 is: 111.1080555135405