使用LocalDateTime来代替Date

import java.time.LocalDateTime;
import java.time.Month;
import java.time.format.DateTimeFormatter;
import java.util.Date;

/**
 * <p>
 *  LocalDateTime的使用
 * </p>
 *
 * @author Levi
 * @since 2019/12/25
 */
public class LocalDateTimeUtil {

    public static void main(String[] args) {
        System.out.println("-------------使用Date-------------");
        Date rightNow = new Date();
        System.out.println(rightNow);
        System.out.println(rightNow.getYear());
        System.out.println(rightNow.getMonth());
        System.out.println(rightNow.getDay());
        System.out.println(rightNow.getHours());
        System.out.println(rightNow.getMinutes());
        System.out.println(rightNow.getSeconds());

        System.out.println("----------使用LocalDateTime------------");
        LocalDateTime now = LocalDateTime.now();
        System.out.println(now);
        System.out.println(now.getYear());
        System.out.println(now.getMonth());
        System.out.println(now.getDayOfMonth());
        System.out.println(now.getHour());
        System.out.println(now.getMinute());
        System.out.println(now.getSecond());

        System.out.println("-------------构造一个日期------------");
        LocalDateTime time = LocalDateTime.of(2020, Month.MAY, 1, 5, 20, 0);
        System.out.println(time);

        System.out.println("-------------修改日期----------------");
        // 减使用minus
        System.out.println(time.minusYears(1L));
        // 加使用plus
        System.out.println(time.plusMonths(5));
        // 直接修改使用with
        System.out.println(time.withYear(2022));

        System.out.println("----------格式化日期-------------");
        String result1 = now.format(DateTimeFormatter.ISO_DATE);
        String result2 = now.format(DateTimeFormatter.BASIC_ISO_DATE);
        String result3 = now.format(DateTimeFormatter.ofPattern("yyyy/MM/dd"));


        System.out.println("格式化后的日期(基本样式 1)-----> " + result1);
        System.out.println("格式化后的日期(基本样式 2)-----> " + result2);
        System.out.println("格式化后的日期(自定义样式)-----> " + result3);

        System.out.println("------------时间反解析----------");
        LocalDateTime parse = LocalDateTime.parse("2020--01--01 01:01", DateTimeFormatter.ofPattern("yyyy--MM--dd HH:mm"));
        System.out.println(parse);
    }
}