44 lines
1.1 KiB
Java
44 lines
1.1 KiB
Java
package chapter5;
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import java.time.LocalDate;
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import java.util.Scanner;
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public class demo55 {
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public static void main(String[] args) {
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Scanner scn = new Scanner(System.in);
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System.out.println("请输入要判断的年份：");
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int year = scn.nextInt();
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System.out.println("方法一：" + year + "的2月有" + getNumOfDaysInFeb1(year) + "天");
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System.out.println("方法二：" + year + "的2月有" + getNumOfDaysInFeb2(year) + "天");
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}
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/**
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* 思路一
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* @param year 年份
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* @return 2月的天数
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*/
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public static int getNumOfDaysInFeb1(int year) {
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LocalDate date = LocalDate.of(year, 3, 1);
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LocalDate feb = date.minusDays(1);
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return feb.getDayOfMonth();
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}
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/**
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* 思路二
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* @param year 年份
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* @return 2月的天数
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*/
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public static int getNumOfDaysInFeb2(int year) {
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LocalDate date = LocalDate.of(year, 1, 1);
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if (date.isLeapYear()) {
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return 29;
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} else {
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return 28;
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}
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// return date.isLeapYear() ? 29 : 28;
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}
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}
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