3.5 Java Switch case

package booksTest;

import java.util.Scanner;

public class p53_3_5 {
    public static void main(String[] args) {
      /*
      从键盘输入一个百分制成绩，输出5级制的成绩，如输出85，输出“良好”，要求使用switch结构实现
       */
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入成绩");
        int achievement = sc.nextInt();
        String name = " ";
        switch (achievement/10){
            case 1: case 2: case 3: case 4: case 5:
                name = "不及格";
                break;
            case 6:
                name = "及格";
                break;
            case 7:
                name = "中等";
                break;
            case 8:
                name = "良好";
                break;
            case 9: case 10:
                name = "优秀";
                break;
            default:
                System.out.println("成绩非法");
                break;
        }
        System.out.println("您的成绩"+name);

    }
}