Java 使用jdk8的新特性LocalDate和LocalDateTime 实现当前时间，日期加减，是否闰年，时间戳，时间线程每秒改变一次

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;

/**
* Created by 夜未央 on 2017/11/26.
*/
public class Time {
public static void main(String[] args) {
Runnable runnable = new Runnable() {
@Override
public void run() {
LocalDate today = LocalDate.now();
//        System.out.println(today);
//        System.out.println("current time:" + today.atTime(LocalTime.now()));
//
//        //检查当前年是否为闰年
//        System.out.println(today.getYear() + "是闰年吗？" + today.isLeapYear());

//当前时间
//        LocalTime time = LocalTime.now();
//        System.out.println(time);

//        //当前日期时间
LocalDateTime current = LocalDateTime.now();
//    System.out.println(current);

//时间戳
//        Instant timeStamp = Instant.now();
//        System.out.println(timeStamp);
//
//日期加减操作
//        System.out.println("10天后是：" + today.plusDays(10));
//        System.out.println("3周后是：" + today.plusWeeks(3));
//        System.out.println("15个月后是：" + today.plusMonths(15));
//
//        System.out.println("8天前是：" + today.minusDays(8));
//        System.out.println("4周前是：" + today.minusWeeks(4));
//        System.out.println("9个月前是：" + today.minusMonths(19));

//        //日期格式化
//                    System.out.println(today.format(DateTimeFormatter.ofPattern("yyyy-MM-dd")));
System.out.println(current.format(DateTimeFormatter.ofPattern("yyyy年MM月dd日 HH:mm:ss")));

}
};
ScheduledExecutorService scheduledExecutorService = Executors.newSingleThreadScheduledExecutor();
scheduledExecutorService.scheduleAtFixedRate(runnable,2,1, TimeUnit.SECONDS);
}
}