java uuid靜態方法

UUID類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()方法用于返回與此UUID鏈接的時間戳。

• 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()方法是一種非靜態方法，只能通過類對象訪問，如果嘗試使用類名稱訪問該方法，則會收到錯誤消息。

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

  timestamp()方法在返回UUID時間戳時可能會引發異常。

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

  UnsupportedOperationException ：當此UUID不支持版本時，可能引發此異常。

Syntax:

句法：

    public long timestamp();

Parameter(s):

參數：

• It does not accept any parameter.

  它不接受任何參數。

Return value:

返回值：

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

方法的返回類型為long ，它檢索此UUID時間戳值。

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

輸出量

uuid.timestamp(): 125411122076450816

翻譯自: https://www.includehelp.com/java/uuid-timestamp-method-with-example.aspx

java uuid靜態方法