threeten-extra使用实例

        <dependency>
            <groupId>org.threeten</groupId>
            <artifactId>threeten-extra</artifactId>
            <version>1.2</version>
        </dependency>

LocalDateTime first = LocalDateTime.parse("2017-07-03T10:15:30", DateTimeFormatter.ISO_DATE_TIME);
    LocalDateTime second = LocalDateTime.parse("2011-08-08T12:15:10", DateTimeFormatter.ISO_DATE_TIME);

    @Test
    public void testAmPm(){
        System.out.println(AmPm.from(LocalTime.now()));
    }

    @Test
    public void testDayOfMonth(){
        System.out.println(DayOfMonth.from(LocalDate.now()));
    }

    @Test
    public void testDayOfYear(){
        System.out.println(DayOfYear.from(LocalDate.now()));
    }

    @Test
    public void testYears(){
        System.out.println(Years.between(first,second));
    }

    @Test
    public void testMonths(){
        System.out.println(Months.between(first,second));
    }

    @Test
    public void testWeeks(){
        System.out.println(Weeks.between(first,second));
    }

    @Test
    public void testDays(){
        System.out.println(Days.between(LocalDate.parse("2017-08-01"),LocalDate.parse("2017-08-03")));
    }

    @Test
    public void testHours(){
        System.out.println(Hours.between(first,second).getAmount());
    }

    @Test
    public void testMinutes(){
        System.out.println(Minutes.between(first,second));
    }

    @Test
    public void testSeconds(){
        System.out.println(Seconds.between(first,second));
    }

    @Test
    public void testTemporals(){
        System.out.println(first.with(Temporals.previousWorkingDay()));
        System.out.println(first.with(Temporals.nextWorkingDay()));
    }

    @Test
    public void testDuration(){
        System.out.println(PeriodDuration.between(first,second).getPeriod());
        System.out.println(PeriodDuration.between(first,second).getDuration());
    }