java怎么判断闰年和平年,java平年闰年的判断代码

package homework;import java.util.Scanner;public class YearJudgment {public static void main(String[] args) {Scanner sc = new Scanner(System.in);System.out.print("请输入一个年份：");int year = sc.nextInt();if (year >= 1970 && year <= 2020) {if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {System.out.println("n提示：" + year + "是闰年！");} else {System.out.println("n提示：" + year + "不是闰年！");}} else {System.out.println("n提示：年份只能在1970~2020之间！");}sc.close();}}