Java UUID randomUUID（）方法与示例

小鱼儿 2023-03-05 13:29 15阅读 0赞

## UUID类randomUUID()方法 **(**UUID Class randomUUID() method**)** ##

*  **randomUUID() method** is available in java.util package.
    
    java.util软件包中提供了**randomUUID()方法** 。
 *  **randomUUID() method** is used to return type 4 UUID and it constructed by pseudo-random number generator.
    
    **randomUUID()方法**用于返回类型4 UUID，它由伪随机数生成器构造。
 *  **randomUUID() method** is a static method, it is accessible with the class name and if we try to access the method with the class object then we will not get an error.
    
    **randomUUID()方法**是一个静态方法，可以使用类名进行访问，如果尝试使用类对象访问该方法，则不会出错。
 *  **randomUUID() method** does not throw an exception at the time of generating random UUID.
    
    在生成随机UUID时， **randomUUID()方法**不会引发异常。

**Syntax:**

**句法：**

public UUID randomUUID();

**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 UUID, it returns type 4 UUID.

该方法的返回类型为UUID ，它返回类型4 UUID。

**Example:**

**例：**

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

**Output**

**输出量**

uuid.randomUUID(): 91c606f6-d87f-4dd1-80b2-414b6ac38ad0

> 翻译自: [https://www.includehelp.com/java/uuid-randomuuid-method-with-example.aspx][https_www.includehelp.com_java_uuid-randomuuid-method-with-example.aspx]

[https_www.includehelp.com_java_uuid-randomuuid-method-with-example.aspx]: https://www.includehelp.com/java/uuid-randomuuid-method-with-example.aspx