题解 | #输出某一年的各个月份的天数#

import java.util.Calendar;
import java.util.Scanner;
import static java.util.Calendar.*;
public class Main {
    public static void main(String[] args) {
        Scanner console = new Scanner(System.in);
        int year = console.nextInt();

        //write your code here......

        for (int i = 1; i <= 12; i++) {
            Calendar ca = getInstance();
            ca.set(YEAR, year);
            ca.set(MONTH, i - 1); //月份是从0月开始
            System.out.println(year + "年" +  i + "月:" + ca.getActualMaximum(
                                   DAY_OF_MONTH) + "天");
        }
    }
}