Java8 新日期时间类（3）

java.time 时间日期偏移类

java.time处理本地日期时间偏移的主要类为 java.time.Duration，java.time.Period ;

Duration

静态构造方式摘要
static Duration static Duration static Duration		between(LocalTime startInclusive，LocalTime endExclusive) of(long amount,TemporalUnit unit) ofHours(long hours) ofMinutes(long minutes) ofSeconds(long seconds)	使用两个时间类的时间差产生Duration，Temporal包括LocalDateTime，ZonedDateTime等使用指定TemperalUnit创建Duration
成员方法摘要
+long +Duration +long +List<TemporalUnit> +Duration +boolean	toHours() / toMinutes() /toSeconds() toMillis() / toNanos() withSeconds(long seconds) getSeconds() / getNanos() getUnits() plus(long amountToAdd,TemporaUnit unit) plusHours(long)/plusMinute(long)/plusSeconds(long) isZero（）		将Duration转化为相应单位的数值修改数值获取数值(效果同toSeconds,toNanos) 获取参数表对Duration进行增减检验值是否为0

Period

静态构造方式摘要
static Period static Period static Period		between(LocalDate startInclusive，LocalDate endExclusive) of(int years,int months,int days) ofYears(long hours) ofMonths(long minutes) ofDayss(long seconds)	使用两个时间类的时间差产生Duration，Temporal包括LocalDateTime，ZonedDateTime等使用指定数值创建Period
成员方法摘要
+long +Period +List<TemporalUnit> +long +Period +boolean	toTotalMonths() withDays(long seconds)/withMonths/withYears getUnits() getYears() / getMonths() / getDays() plus(long amountToAdd,TemporaUnit unit) plusDays(long)/plusMonths(long)/plusYears(long) isZero()		将Period转化为相应单位的数值修改数值获取参数表获取参数对Period进行增减判断是否为空

使用示例

import java.time.*;
....
//计算两个Temporal对象的时间差
LocalDate date1 = LocalDate.of(1997,1,1);
LocalDate date2 = LocalDate.now();
Period period = Period.between(date1,date2);
System.out.println("date1: "+date1+"\ndate2: "+date2);
System.out.println("Period->years:"+period.getYears()+" months:"+period.getMonths()+" days:"+period.getDays());
LocalTime time1 = LocalTime.of(0,0,0);
LocalTime time2 = LocalTime.now();
System.out.println("time1: "+time1+"\ntime2: "+time2);
Duration duration = Duration.between(time1,time2);
System.out.print("Duration->");
duration.getUnits().forEach( temporalUnit -> System.out.print(temporalUnit+": "+duration.get(temporalUnit)+" ") );

结果如下：

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