LocalDateTime 包含日期和时间。默认格式是 yyyy-MM-dd-HH-mm-ss.zzz. 要创建它的实例，需要传入 LocalDate 和LocalTime ：

        LocalDateTime today = LocalDateTime.now();
        System.out.println("现在时间"+today);

        today = LocalDateTime.of(LocalDate.now(), LocalTime.now());
        System.out.println("现在时间2"+today);

        LocalDateTime specificDate = LocalDateTime.of(2014, Month.JANUARY, 1, 10, 10, 30);
        System.out.println("特定时间"+specificDate);

        LocalDateTime today1 = LocalDateTime.now(ZoneId.of("UTC-1"));
        System.out.println("东一区时间"+today1);

        //Getting date from the base date i.e 01/01/1970
        LocalDateTime dateFromBase = LocalDateTime.ofEpochSecond(10000, 0, ZoneOffset.UTC);
        System.out.println("1970年一万秒后 "+dateFromBase);