java8新特性LocalDateTime字符串转时间比较大小（5）

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;import java.util.Date;

public class TimeCompare {

    public static void main(String[] args) {
//        String time1 = "2019-06-26 19:00:00";
//        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//有漏洞，建议不要用
//        Date date1;
//        try {
//            date1 = sdf.parse(time1);
//            Date date2 = new Date();
//            System.out.println(date1.before(date2));
//            System.out.println(date1.after(date2));
//        } catch (ParseException e) {
//            e.printStackTrace();
//        }
        //第一种
        String time1 = "2019-06-26 19:00:00";
        DateTimeFormatter dtf2 = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        LocalDateTime localDateTime = LocalDateTime.parse(time1, dtf2);
        System.out.println(localDateTime.isBefore(LocalDateTime.now()));//你的时间在当前时间之前是true
        System.out.println(localDateTime.isAfter(LocalDateTime.now()));//在当前时间之后是false　　　　 //第二种　　　　 LocalDateTime now = LocalDateTime.now();　　　　 Duration duration = Duration.between(now,now);        System.out.println(duration);        long days = duration.toDays(); //相差的天数        long hours = duration.toHours();//相差的小时数        long minutes = duration.toMinutes();//相差的分钟数        long millis = duration.toMillis();//相差毫秒数        long nanos = duration.toNanos();//相差的纳秒数        System.out.println(millis);　　　　 //第三种        long mills = now.atZone(ZoneId.systemDefault()).toInstant().toEpochMilli();        System.out.println(mills >= System.currentTimeMillis());
    }

}