JAVA 8 主要新特性 ----------------(七)新时间日期 API ----- Duration “时间”间隔

Duration:用于计算两个“时间”间隔

简介：

用法:

1、Zero常量

实例：

 Duration duration = Duration.ZERO;
         System.out.println("持续时间常量值:"+duration.toNanos());
         System.out.println("持续时间常量值是否为零:"+duration.isZero());
         System.out.println("持续时间常量值是正数:"+duration.abs().toNanos());

2、ofDays

实例：

 Duration durationOfDays =  Duration.ofDays(1);
         System.out.println("一天有多少小时:"+durationOfDays.toHours()+"H");

3、ofHours

实例：

 Duration durationOfHours =  Duration.ofHours(2);
         System.out.println("一小时有多少分:"+durationOfHours.toMinutes()+"m");

4、ofMinutes

实例：

 Duration durationOfMinutes =  Duration.ofMinutes(1);
         System.out.println("一分钟有多少秒:"+durationOfMinutes.getSeconds()+"s");

5、ofSeconds

实例：

 Duration durationOfSeconds =  Duration.ofSeconds(1);
         System.out.println("一秒有多少秒:"+durationOfSeconds.getSeconds()+"s");

实例：

 Duration durationOfSecondsNano =  Duration.ofSeconds(2,2000);
         System.out.println("2000纳秒有多少秒:"+durationOfSecondsNano.getSeconds()+"s");

6、ofMillis

实例：

 Duration durationOfMillis =  Duration.ofMillis(5000);
         System.out.println("5000纳秒有多少秒:"+durationOfMillis.getSeconds()+"s");

7、ofNanos

实例：

 Duration durationOfNanos =  Duration.ofNanos(10000);
         System.out.println("10000纳秒有多少纳秒:"+durationOfNanos.toNanos()+"s");

8、of

实例：

  Duration durationOf =  Duration.of(10,SECONDS);
         System.out.println("10秒有多少秒:"+durationOf.getSeconds()+"s");

9、from

实例：

 Duration durationFrom =  Duration.from(Duration.ofDays(10));
         System.out.println("10天有多少小时:"+durationFrom.toHours()+"H");

10、parse

实例：

 Duration durationParse =  Duration.parse("PT15M");
         System.out.println("格式转化15分钟:"+durationParse.toMinutes()+"M");

11、between

实例：

 Duration durationBetween =  Duration.between(LocalTime.NOON,LocalTime.MAX);
         System.out.println("距离今天结束还有多少时间:"+durationBetween.toHours()+"时"+durationBetween.toMinutes()+"分"+durationBetween.getSeconds()+"秒");