61 lines
1.6 KiB
Java
61 lines
1.6 KiB
Java
/**
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*
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*/
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package com.github.javafaker;
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import java.util.Date;
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import java.util.concurrent.TimeUnit;
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import com.github.javafaker.service.RandomService;
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/**
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* A generator of random dates.
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*
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* @author Peter Miklos (pmiklos@sirokko.net)
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*
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*/
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public class DateAndTime {
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private RandomService randomService;
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public DateAndTime(RandomService randomService) {
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this.randomService = randomService;
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}
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/**
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* Generates a future date from now. Note that there is a 1 second slack to avoid generating a past date.
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*
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* @param atMost
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* at most this amount of time ahead from now.
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* @param unit
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* the time unit.
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* @return a future date from now.
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*/
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public Date future(int atMost, TimeUnit unit) {
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Date now = new Date();
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Date aBitLaterThanNow = new Date(now.getTime() + 1000);
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return future(atMost, unit, aBitLaterThanNow);
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}
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/**
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* Generates a future date relative to the {@code referenceDate}.
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*
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* @param atMost
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* at most this amount of time ahead to the {@code referenceDate}.
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* @param unit
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* the time unit.
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* @param referenceDate
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* the future date is relative to this date.
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* @return a future date relative to {@code referenceDate}.
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*/
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public Date future(int atMost, TimeUnit unit, Date referenceDate) {
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long upperBound = unit.toMillis(atMost);
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long futureMillis = referenceDate.getTime();
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futureMillis += 1 + randomService.nextLong(upperBound - 1);
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return new Date(futureMillis);
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}
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}
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