Java Scanner - double error

itemprop="text">

I have problem
with scanner. If I try to use double, console gives me error message:

Exception in
thread "main" java.util.InputMismatchException
at
java.util.Scanner.throwFor(Scanner.java:864)

at
java.util.Scanner.next(Scanner.java:1485)
at
java.util.Scanner.nextDouble(Scanner.java:2413)
at
test.test.main(test.java:9)

code

package
            test;

import
            java.util.Scanner;


public class test {
public
            static void main(String args[]){
 System.out.print("vlozte hmotnost:
            ");
 Scanner vstup = new Scanner (System.in);
 double hmotnost =
            vstup.nextDouble();

//------------------------------------------
            

 System.out.print("vlozte drahu: ");

 Scanner
            vstup2 = new Scanner(System.in);
 double draha =
            vstup2.nextDouble();

//------------------------------------------


            double sila = hmotnost *
            10;

//------------------------------------------


            double praca = sila * draha;

 System.out.print("praca je:
            ");
 System.out.print(praca);
 System.out.println("
            Joulov");

class="post-text" itemprop="text">

class="normal">Answer

Type
1,5 instead of 1.5. Also, as mentioned above,
You can use one scanner:

import
            java.util.Scanner;

public class test {

 public
            static void main(String args[]) {
 System.out.print("vlozte hmotnost:
            ");
 Scanner vstup = new Scanner(System.in);
 double hmotnost =
            vstup.nextDouble();

//------------------------------------------


            System.out.print("vlozte drahu: ");
 double draha =
            vstup.nextDouble();


//------------------------------------------


            double sila = hmotnost *
            10;

//------------------------------------------


            double praca = sila * draha;
 System.out.print("praca je: ");

            System.out.print(praca);
 System.out.println(" Joulov");


            }
}