JAVA - Klasifikasi Nilai Ujian dengan Switch

package nilaiujian;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class NilaiUjian {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        System.out.print("Masukkan Nilai Ujian (0 s.d. 100) : ");
        try{
            int nilai = Integer.parseInt(br.readLine());
            switch(nilai/10) {
                case 9: System.out.println("Nilai A"); break;
                case 8: System.out.println("Nilai B"); break;
                case 7: System.out.println("Nilai C"); break;
                default: System.out.println("Nilai E"); break;
            }

        }catch(NumberFormatException nfe){
            System.err.println("Format tidak sesuai!");
        }

    }
}