JDK1.8 新增的日期时间API

川长思鸟来 2021-10-18 06:36 598阅读 0赞

# JDK1.8 新增的日期时间API #

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjU4NDU0NQ_size_16_color_FFFFFF_t_70]

# （一）JDK1.8 新增的日期时间AP #

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjU4NDU0NQ_size_16_color_FFFFFF_t_70 1]

### 1.获取方法 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjU4NDU0NQ_size_16_color_FFFFFF_t_70 2]

public class MyTest {
        public static void main(String[] args) {
            //JDK1.8新增的时间日期API
           /* LocalDate 表示年月日
            LocalTime 表示时分秒
            LocalDateTime 表示年月日时分秒        */
           //通过一个静态方法now()获取当前的时间
            LocalDate now = LocalDate.now();
            System.out.println(now);
            LocalTime now1 = LocalTime.now();
            System.out.println(now1);
            LocalDateTime now2 = LocalDateTime.now();
            System.out.println(now2);
            System.out.println("-------------------------");
            //可以指定日期
            LocalDate of = LocalDate.of(2018, 10, 10);
            System.out.println(of);
    
            LocalDateTime of1 = LocalDateTime.of(2018, 10, 10, 12, 12, 12);
            System.out.println(of1);
        }
    }

### 2常用方法![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjU4NDU0NQ_size_16_color_FFFFFF_t_70 3] ###

# （二）Instant #

Instant 时间戳类从1970-01-01 00:00:00 截止到当前时间的毫秒值  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjU4NDU0NQ_size_16_color_FFFFFF_t_70 4]

# （三）时间间隔和日期间隔 #

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjU4NDU0NQ_size_16_color_FFFFFF_t_70 5]

# (四)TemporalAdjuster #

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjU4NDU0NQ_size_16_color_FFFFFF_t_70 6]

# （五）DateTimeFormatter #

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjU4NDU0NQ_size_16_color_FFFFFF_t_70 7]

# （六）ZoneID 世界时区类 #

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjU4NDU0NQ_size_16_color_FFFFFF_t_70 8]

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