Java 基于当前时间获取和计算时间

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import java.time.LocalDate;

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import java.time.LocalDateTime;

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import java.time.LocalTime;

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import java.time.Month;

/**来自 

 N o w J a v a . c o m - 时代Java**/

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public class Main {

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    public static void main(String[] args){

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        LocalTime time = LocalTime.now();

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        System.out.println("Current Time: " + time);

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        // atDate(LocalDate): obtain the local date and time

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        LocalDateTime ldt = time.atDate(LocalDate.of(2011,Month.NOVEMBER,11));

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        System.out.println("Local Date Time object: " + ldt);

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        // of(int hours, int min): obtain a specific time 

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        LocalTime pastTime = LocalTime.of(1, 10);

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        // compareTo(LocalTime): compare two times.  Positive

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        // return value returned if greater

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        System.out.println("Comparing times: " + time.compareTo(pastTime));/** NowJava.com - 时  代  Java 提 供 **/

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        // getHour(): return hour in int value (24-hour format)

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        int hour = time.getHour();

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        int min  = time.getMinute();

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        int nano = time.getNano();

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        int sec  = time.getSecond();

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        System.out.println("Hour: " + hour);

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        // isAfter(LocalTime): return Boolean comparison

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        System.out.println("Is local time after pastTime? " + time.isAfter(pastTime));

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        // minusHours(int): Subtract Hours from LocalTime

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        LocalTime minusHrs = time.minusHours(5);

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