java输入年份和月份，输出天数

布满荆棘的人生 2022-11-15 11:40 266阅读 0赞

## java输入年份和月份，输出天数 ##

import java.util.Scanner;
    
    /**
     * Switch case 实现从键盘录入年份月份，输出天数
     */
    public class Test02 {
        
        public static void main(String[] args) {
        
            Scanner sc = new Scanner(System.in);
            System.out.println("请输入年份：");
            int year = sc.nextInt();
    
            System.out.println("请输入月份：");
            int month = sc.nextInt();
    
            switch (month){
        
                case 1:
                case 3:
                case 5:
                case 7:
                case 8:
                case 10:
                case 12:
                    System.out.println(year+"年"+month+"月有31天");
                    break;
                case 4:
                case 6:
                case 9:
                case 11:
                    System.out.println(year+"年"+month+"月有30天");
                    break;
                case 2:
                    if (year%4==0&&year%100!=0||year%400==0){
        
                        System.out.println(year+"年"+month+"月有29天");
                    }else {
        
                        System.out.println(year+"年"+month+"月有28天");
                    }
                    break;
                default:
                    System.out.println("月份有误");
            }
            sc.close();
        }
    }

结果如下图：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ4NzU5NjY0_size_16_color_FFFFFF_t_70]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ4NzU5NjY0_size_16_color_FFFFFF_t_70]: /images/20221022/3023e8acadc94a0b9d34fd1ab9344fc4.png