import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

/**
 * @author LiuYan
 * @date 2021年11月15日 8:50
 */
public class Part09 {
 /**
 * Date里面的一些方法过时了
 */
 public static void main(String[] args) throws ParseException {

 Calendar now = Calendar.getInstance();

 // 获取年月日时分秒
 int year = now.get(Calendar.YEAR);
 int moth = now.get(Calendar.MONTH);// 获取当前月份索引(0-11)
 int day = now.get(Calendar.DAY_OF_MONTH);
 int hour = now.get(Calendar.HOUR);
 int minute = now.get(Calendar.MINUTE);
 int second = now.get(Calendar.SECOND);
 System.out.println(year);
 System.out.println(moth);
 System.out.println(day);
 System.out.println(hour);
 System.out.println(minute);
 System.out.println(second);
 // 设置时间
 now.set(2022, 12, 12, 12, 12, 12);
 now.set(Calendar.YEAR,2222);
 // Date---->Calendar
 now.setTime(new Date());
 // Calendar---->Date
 Date time = now.getTime();
 System.out.println(time);
 // Calendar添加字段(添加两个月)
 now.add(Calendar.MONTH,2);
 // String---->Date
 SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy--MM-dd HH:mm:ss");
 String str="2021-12-12 00:00:00";
 simpleDateFormat.parse(str);
 // Date---->String
 Date date=new Date();
 String format = simpleDateFormat.format(date);
 System.out.println(format);


 }
}