Java 时间处理(三)：获取年份、月份等

 Calendar cal = Calendar.getInstance();//实例化日历
        int day = cal.get(Calendar.DATE);
        int month = cal.get(Calendar.MONTH) + 1;
        int year = cal.get(Calendar.YEAR);
        int day_of_week = cal.get(Calendar.DAY_OF_WEEK);
        int day_of_month = cal.get(Calendar.DAY_OF_MONTH);
        int day_of_year = cal.get(Calendar.DAY_OF_YEAR);

        System.out.println("当前日期:" + cal.getTime());
        System.out.println("日期:" + day);
        System.out.println("月份:" + month);
        System.out.println("年份:" + year);
        System.out.println("一周中的第几天:" + day_of_week);
        System.out.println("一个月中的第几天:" + day_of_month);
        System.out.println("一年中的第几天:"+ day_of_year);


        //当前日期:Tue Jul 23 15:34:19 CST 2019
        //日期:23
        //月份:7
        //年份:2019
        //一周中的第几天:3
        //一个月中的第几天:23
        //一年中的第几天:204