1.2.2if语句格式2及执行流程

if else

public static void main(String[] args) {
        Scanner sc =new Scanner(System.in);
        System.out.println("请输入一个年份，判断是闰年还是平年：");
        int year = sc.nextInt();
        if((year % 400 == 0) || (year % 100 != 0 )&&year % 4 == 0){
            System.out.println(year + "是闰年！");
        }else{
            System.out.println(year + "是平年！");
        }
    }