Java 编程练习：计算指定年份每个月的日期数

package step4;

import java.util.Scanner;

/********** Begin *********/ public class TestMonthLength {

public static void main(String[] args) {
    Scanner input = new Scanner(System.in);
    int year = input.nextInt();
    for (int i = 1; i <= 12; i++) {
        int days = 0;
        switch (i) {
            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 (((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0)) {
                    days = 29;
                } else {
                    days = 28;
                }
                break;
        }
        System.out.println(days);
    }
}

} /********** End *********/