Grade Calculator in Java

1import java.util.Scanner;
2
3public class Main {
4    public static void main(String[] args) {
5        Scanner sc = new Scanner(System.in);
6
7        System.out.print("Enter percentage: ");
8        double per = sc.nextDouble();
9
10        char grade;
11        if (per >= 90) {
12            grade = 'A';
13        } else if (per >= 80) {
14            grade = 'B';
15        } else if (per >= 70) {
16            grade = 'C';
17        } else if (per >= 60) {
18            grade = 'D';
19        } else {
20            grade = 'F';
21        }
22
23        System.out.println("Grade = " + grade);
24
25        sc.close();
26    }
27}