java uuid静态方法

UUID类timestamp()方法 (UUID Class timestamp() method)

• timestamp() method is available in java.util package.

  timestamp()方法在java.util包中可用。

• timestamp() method is used to return the timestamp linked with this UUID.

  timestamp()方法用于返回与此UUID链接的时间戳。

• timestamp() 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.

  timestamp()方法是一种非静态方法，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。

• timestamp() method may throw an exception at the time of returning UUID timestamp.

  timestamp()方法在返回UUID时间戳时可能会引发异常。

  UnsupportedOperationException: This exception may throw when this UUID un-support version.

  UnsupportedOperationException ：当此UUID不支持版本时，可能引发此异常。

Syntax:

句法：

public long timestamp();

Parameter(s):

参数：

• It does not accept any parameter.

  它不接受任何参数。

Return value:

返回值：

The return type of the method is long, it retrieves this UUID timestamp value.

方法的返回类型为long ，它检索此UUID时间戳值。

Example:

例：

// Java program to demonstrate the example // of long timestamp() method of UUID import java.util.*;public class TimeStampOfUUID {
       public static void main(String[] args) {
           // Instantiate UUID         UUID uuid = UUID.fromString("46400000-8cc0-11bd-b43e-10d46e4ef14d");        //By using timestamp() method is to        //return the timestamp value of this        //UUID        long time_stamp = uuid.timestamp();        // Display time_stamp Value        System.out.println("uuid.timestamp(): " + time_stamp);    }}

Output

输出量

uuid.timestamp(): 125411122076450816

翻译自:

java uuid静态方法