Calendar类的习题

由于Calendar是抽象类，不能实例化，所以利用子类对象进行调用方法。

package Calender_study;

import java.util.Calendar;

public class calender_t1 {
    public static void main(String[] args) {

        Calendar ca = Calendar.getInstance();
        Calendar_print(ca);

    }

    public static void Calendar_print(Calendar ca) {
        int year = ca.get(Calendar.YEAR);
        int month = ca.get(Calendar.MONTH);
        System.out.println("今天是" + year + "年" + (month + 1) + "月" + ca.get(Calendar.DATE) + "日,星期" +getIndexArr(ca.get(Calendar.DAY_OF_WEEK)) + "，是今年的第" + ca.get(Calendar.DAY_OF_YEAR) + "天");
        ca.set(Calendar.YEAR, 2008);
    }

    public static String getIndexArr(int i) {
        String s[] = {"", "日", "一", "二", "三", "四", "五", "六"};
        return s[i];
    }
}