Java——switch选择结构

Java中Switch选择结构的用法基本与C语言一致。一些笔记参看代码注释

package base.Select;

import java.util.Scanner;

public class switch01 {
    
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String grade;
        grade=scanner.nextLine();
        switch (grade){
            case "A":{
                System.out.println("优秀");
                break;
            }
            case "B":
                System.out.println("良好");
                break;
            case "C":
                System.out.println("及格");
                break;
            case "D":
                System.out.println("不及格");
                break;
                
            default:
                System.out.println("错误");
        }
    }
    
}