New to Java

I expected the output of the following code to be 5... Cant explain what I am doing wrong.. Code compiles but an exception is thrown an runtime..Is it perhaps the use of delimiter?

import java.util.*;
public class Test {
 
    public static void main(String[] args) {
       String csv = "Sue,5,true,3";
       Scanner scanner = new Scanner(csv);
       scanner.useDelimiter(",");
       
       int agr = scanner.nextInt(); //Throws java.util.InputMismatchException
    }
}

Thanks for any help.