JAVA如何获取当前年份，月份、日期、小时、分钟、秒呢?

1.获取 Calendar.getInstance(); 实例
2.通过获取实例对象中的相关信息,即可得到
   相应的年份、月份、日期、小时、分钟、秒等信息

 import java.util.Calendar;
 
public class Main {
    public static void main(String[] args) {
        Calendar cal = Calendar.getInstance();
        int day = cal.get(Calendar.DATE);
        int month = cal.get(Calendar.MONTH) + 1;
        int year = cal.get(Calendar.YEAR);
        int dow = cal.get(Calendar.DAY_OF_WEEK);
        int dom = cal.get(Calendar.DAY_OF_MONTH);
        int doy = cal.get(Calendar.DAY_OF_YEAR);
        int hour = cal.get(Calendar.HOUR_OF_DAY);
        int minute = cal.get(Calendar.MINUTE);
        int second = calendar.get(Calendar.SECOND);

 
        System.out.println("当期时间: " + cal.getTime());
        System.out.println("日期: " + day);
        System.out.println("月份: " + month);
        System.out.println("年份: " + year);

        // 星期日为一周的第一天输出为 1，星期一输出为 2，以此类推
        System.out.println("一周的第几天: " + dow);  
        System.out.println("一月中的第几天: " + dom);
        System.out.println("一年的第几天: " + doy);
        System.out.println("小时: " + hour); 
        System.out.println("分钟: " + minute );
        System.out.println("秒: " + second );

    }
}