用java的循环实现出，三天打鱼，两天晒网问题

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import java.util.Scanner;
public class Homework4 {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入年份：");
int year = scanner.nextInt();
System.out.println("请输入月份：");
int month = scanner.nextInt();
System.out.println("请输入日期");
int day = scanner.nextInt();
judge(getAllDays(year, month, day));
}
// 判断打鱼还是晒网
public static void judge(int days) {
int x = days % 5;
if (x >= 1 && x <= 3) {
System.out.println("打鱼！");
} else if (x == 4 || x == 0) {
System.out.println("晒网！");
}
}
// 判断是否是闰年
public static boolean runNian(int year) {
if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) {
return true;
}
return false;
}
// 计算距离输入日期多少天
public static int getAllDays(int year, int month, int day) {
int sum = 0;
// 计算1990--(year-1)之间有多少天
for (int i = 1990; i < year; i++) {
if (runNian(i)) {
sum += 366;
} else {
sum += 365;
}
}
// 计算year内多少天
sum += getBeforeDays(year, month, day);
return sum;
}
// 判断每月有几天
public static int getDays(int year, int month) {
int days = 0;
switch (month) {
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
days = 31;
break;
case 4:
case 6:
case 9:
case 11:
days = 30;
break;
case 2:
if (runNian(year)) {
days = 29;
} else {
days = 28;
}
break;
}
return days;
}
// 计算本年内该日期之前共有多少天
public static int getBeforeDays(int year, int month, int day) {
int sum = 0;
for (int i = 1; i < month; i++) {
sum += getDays(year, i);
}
return sum + day;
}
}