Why I'm getting crash when I'm trying to set float numbers? - crash

Question

I wrote a small calculator program, and when I try to set float numbers it gives me the following crash log:
**Exception in thread "main" java.util.InputMismatchException
at java.base/java.util.Scanner.throwFor(Scanner.java:939)
at java.base/java.util.Scanner.next(Scanner.java:1594)
at java.base/java.util.Scanner.nextInt(Scanner.java:2258)
at java.base/java.util.Scanner.nextInt(Scanner.java:2212)
at Main.main(Main.java:9)
Process finished with exit code 1**
My code is :
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
System.out.println("Welcome to the calculator program: " );
System.out.println( "\n Please enter 2 numbers :");
Scanner scanner = new Scanner(System.in);
float number1 = scanner.nextInt();
float number2 = scanner.nextInt();
float sumOfNumbers = number1 + number2;
float subtractionOfNumbers = number1 - number2;
float multiplicationOfNumbers = number1 * number2;
float divisionOfNumbers = number1 / number2;
System.out.println("Please choose what operation do you want - (+)/(-)/(*)/(/): ");
System.out.println(" 1 = + / 2 = - / 3 = * / 4 = /");
int operation = scanner.nextInt();
switch (operation) {
case 1:
System.out.println("The sum of " +number1+ " and " +number2 + " is " +sumOfNumbers);
break;
case 2:
System.out.println("The subtraction of " +number1+ " and " +number2 + " is " +subtractionOfNumbers);
break;
case 3:
System.out.println("The multiplication of " +number1+ " and " +number2 + " is " +multiplicationOfNumbers);
break;
case 4:
System.out.println("The division of " +number1+ " and " +number2 + " is " +divisionOfNumbers);
break;
}
}
}
Why I'm getting crash when I'm trying to set float numbers?

Answer 1

scanner.nextInt() returns an integer, not a float. Either type cast it to a float, or use scanner.nextFloat() instead