根据输入编号输出相应的课程名

package com.bdqn;

import java.util.Scanner;

public class Course {
    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        System.out.println("请输入1-3之间的整数：");
        try{
            int num = s.nextInt();
            switch (num){
                case 1:
                    System.out.println("语文课");
                    break;
                case 2:
                    System.out.println("数学课");
                    break;
                case 3:
                    System.out.println("英语课");
                    break;
            }
        }catch(Exception e){
            System.err.println( "请输入1-3之间的整数");
        }finally {
            System.out.println("欢迎提出建议");
        }
    }
}