I am having an issue with this program, I keep getting the number 15 everytime I type in a code. There is also the instructions for the module itself. //PSEUDOCODE     //Write a program that prompts the user for a binary number     //(from 3 to 8 bits) as a String and converts it to base-10 decimal value     //There are several ways to do this in Java but your program must use a for loop and first principles to perform the conversion     //Print the base-10 number when the loop ends     public static void main(String args[]) {         long sum = 0;                  System.out.println("Enter a binary number: ");         Scanner scan = new Scanner(System.in);         String s = scan.next();                  long result = 0;         for (int i = 0; i < s.length(); i++) {             result = (long) (result + (s.charAt(1) - '0') * Math.pow(2, s.length()- i - 1));         scan.close();         }         System.out.println(result);             } }

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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I am having an issue with this program, I keep getting the number 15 everytime I type in a code. There is also the instructions for the module itself.

//PSEUDOCODE
    //Write a program that prompts the user for a binary number
    //(from 3 to 8 bits) as a String and converts it to base-10 decimal value
    //There are several ways to do this in Java but your program must use a for loop and first principles to perform the conversion
    //Print the base-10 number when the loop ends
    public static void main(String args[]) {
        long sum = 0;
        
        System.out.println("Enter a binary number: ");
        Scanner scan = new Scanner(System.in);
        String s = scan.next();
        
        long result = 0;
        for (int i = 0; i < s.length(); i++) {
            result = (long) (result + (s.charAt(1) - '0') * Math.pow(2, s.length()- i - 1));
        scan.close();
        }
        System.out.println(result);        
    }
}

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