java 根据类名示例化类_Java LocalDateTime类| 带示例的getNano（）方法

java 根据类名示例化类

LocalDateTime类getNano()方法 (LocalDateTime Class getNano() method)

getNano() method is available in java.time package.
getNano()方法在java.time包中可用。
getNano() method is used to get nano-of-second field value from this date-time object.
getNano()方法用于从此日期时间对象获取毫微秒的字段值。
getNano() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
getNano()方法是一个非静态方法，只能通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。
getNano() method does not throw an exception at the time of getting nano of second.
getNano()方法在获得毫微秒的时间时不会引发异常。

Syntax:

句法：

    public int getNano();

Parameter(s):

参数：

None
没有

Return value:

返回值：

The return type of this method is int, it returns the value nano-of-second field of this object and the number of nanoseconds in a second starts from 0 and ends at 999,999,999.

此方法的返回类型为int ，它返回该对象的nano-of-second字段值，并且在一秒内的纳秒数从0开始到999,999,999结束。

Example:

例：

// Java program to demonstrate the example 
// of getNano() method of LocalDateTime
import java.time.*;
public class GetNanoOfLocalDateTime {
public static void main(String args[]) {
// Instantiates two LocalDateTime
LocalDateTime da_ti1 = LocalDateTime.parse("2005-10-05T10:10:10.2458");
LocalDateTime da_ti2 = LocalDateTime.now();
// Display da_ti1, da_ti2
System.out.println("LocalDateTime da_ti1 and da_ti2: ");
System.out.println("da_ti1: " + da_ti1);
System.out.println("da_ti2: " + da_ti2);
System.out.println();
// Here, this method returns the field
// value nano-of-second in an integer 
// from this date-time object (da_ti1)
int get_nano = da_ti1.getNano();
// Display get_nano
System.out.print("da_ti1.getNano(): ");
System.out.println(get_nano);
// Here, this method returns the field
// value nano-of-second in an integer 
// from this date-time object (da_ti2)
get_nano = da_ti2.getNano();
// Display get_nano
System.out.print("da_ti2.getNano(): ");
System.out.println(get_nano);
}
}

Output

输出量

LocalDateTime da_ti1 and da_ti2: 
da_ti1: 2005-10-05T10:10:10.245800
da_ti2: 2020-06-06T20:38:07.340022da_ti1.getNano(): 245800000
da_ti2.getNano(): 340022000