三種獲取當天剩餘時間的簡潔方式，分別使用DateUtils、DateTime和LocalDateTime，有時間再詳解這三個類的更多方法。下面是編寫的程式碼，有更多好的方式，歡迎留言。

import org.apache.commons.lang.time.DateUtils;
import org.joda.time.DateTime;
import org.joda.time.Duration;
import org.junit.Test;

import java.time.LocalDateTime;
import java.time.temporal.ChronoUnit;
import java.util
 
.Calendar;

/**
 * Created by Administrator on 2016/12/12.
 */
public class TimeTest {

    @Test
    public void getTime() {

        //方法一
        long milliSecondsLeftToday = 86400000 - DateUtils.getFragmentInMilliseconds(Calendar.getInstance(), Calendar.DATE);
        long secondsLeftToday = 86400 - DateUtils.getFragmentInSeconds
 
(Calendar.getInstance(), Calendar.DATE);
        System.out.println("當天剩餘毫秒1：" + milliSecondsLeftToday);
        System.out.println("當天剩餘秒1：" + secondsLeftToday);


        //方法二
        DateTime dateTime = new DateTime().millisOfDay().withMaximumValue();
        long millSeconds2 = new Duration(new DateTime(), dateTime).getMillis
 
();
        long count = new Duration(new DateTime(), dateTime).getStandardSeconds();
        System.out.println("當天剩餘毫秒2：" + millSeconds2);
        System.out.println("當天剩餘秒2：" + count);


        //方法三:LocalDateTime和ChronoUnit為1.8新增
        LocalDateTime midnight = LocalDateTime.now().plusDays(1).withHour(0).withMinute(0).withSecond(0).withNano(0);
        long millSeconds = ChronoUnit.MILLIS.between(LocalDateTime.now(),midnight);
        long seconds = ChronoUnit.SECONDS.between(LocalDateTime.now(), midnight);
        System.out.println("當天剩餘毫秒3：" + millSeconds);
        System.out.println("當天剩餘秒3：" + seconds);

    }
}