LocalDate/LocalDateTime/LocalTime/Date

忘是亡心i 2022-09-07 14:36 153阅读 0赞

package com.company;
    
    import java.time.*;
    import java.time.format.DateTimeFormatter;
    import java.util.Date;
    
    /**
     * @author xiesongzhuang1
     * @Description TODO
     * @createTime 2021年08月20日
     */
    public class test {
        
        public static final LocalTime ON_HOUR_TIME = LocalTime.of(8, 0);
        public static final LocalTime OFF_HOUR_TIME = LocalTime.of(20, 0);
     public static  void  main(String[] args){
        
         //Date 转LocalDate
         Date date = new Date();
         LocalDate localDate = date.toInstant().atZone(ZoneId.systemDefault()).toLocalDate();
         //Date 转LocalDateTime
         LocalDateTime localDateTime = date.toInstant().atZone(ZoneId.systemDefault()).toLocalDateTime();
         //LocalDateTime转String
         String localDate3=date.toInstant().atZone(ZoneId.systemDefault()).toLocalDateTime().format(DateTimeFormatter.ofPattern("HH:mm"));
         System.out.println("date--"+date);//date--Mon Aug 23 16:23:48 CST 2021
         System.out.println("LocalDate--"+localDate);//LocalDate--2021-08-23
         System.out.println("localDateTime--"+localDateTime);//localDateTime--2021-08-23T16:40:12.962
         System.out.println("LocalDate3--"+localDate3);//LocalDate2--16:37
         //LocalDateTime 转Date
         LocalDateTime localDateTime2 = LocalDateTime.now();
         Date date2 = Date.from(localDateTime.toInstant(ZoneOffset.UTC));
         System.out.println("localDateTime2--"+localDateTime2);//localDateTime2--2021-08-23T20:33:15.489
         System.out.println("date2--"+date2);//date2--Tue Aug 24 04:33:15 CST 2021
         //LocalDateTime 转Date  标准版
         Date date3= Date.from(localDateTime2.atZone(ZoneId.systemDefault()).toInstant());
         System.out.println("date3-----"+date3);//date3-----Mon Aug 23 20:33:15 CST 2021
        
        //LocalTime
         System.out.println(ON_HOUR_TIME);//08:00
        //LocalTime到LocalDateTime
         LocalDateTime startLocalDate = localDate.atTime(ON_HOUR_TIME);
         System.out.println(startLocalDate);//2021-08-23T08:00
    
         LocalDateTime endLocalDate=localDate.atTime(OFF_HOUR_TIME);
         System.out.println("endLocalDate---"+endLocalDate);//endLocalDate---2021-08-23T20:00
         
         LocalDateTime minTime = localDate.atTime(LocalTime.MIN);
         LocalDateTime maxTime = localDate.atTime(LocalTime.MAX);
    
         System.out.println(minTime);//2021-08-23T00:00
         System.out.println(maxTime);//2021-08-23T23:59:59.999999999
        // 计算两个时间的差值LocalDateTime
         Duration dur = Duration.between(startLocalDate, endLocalDate);
    
         System.out.println("dur-----"+dur);//dur-----PT12H
    
    
    
    
     }
    }

LocalDate/LocalDateTime/LocalTime/Date

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