Java UUID fromString()用法及代碼示例

Java中UUID類的fromString()方法用於根據標準字符串表示形式創建UUID。

用法:

public static UUID fromString(String UUID_name)

參數：該方法采用一個參數UUID_name，它是UUID的字符串表示形式。

返回值：該方法返回從指定字符串創建的實際UUID。

異常：如果傳遞了無效的UUID_name，則該方法將引發IllegalArgumentException。

以下示例程序旨在說明fromString()方法的用法：

示例1:

// Java code to illustrate fromString() method 
  
import java.util.*; 
  
public class UUID_Demo { 
    public static void main(String[] args) 
    { 
  
        // Get the string 
        String UUID_name 
            = "5fc03087-d265-11e7-b8c6-83e29cd24f4c"; 
  
        // Displaying the UUID 
        System.out.println("The specified String is: "
                           + UUID_name); 
  
        // Creating the UUID 
        UUID UUID_1 
            = UUID 
                  .fromString(UUID_name); 
  
        // Displaying the UUID 
        System.out.println("The UUID from"
                           + " specified String: "
                           + UUID_1); 
    } 
}

輸出：

The specified String is: 5fc03087-d265-11e7-b8c6-83e29cd24f4c
The UUID from specified String: 5fc03087-d265-11e7-b8c6-83e29cd24f4c

示例2:

// Java code to illustrate fromString() method 
  
import java.util.*; 
  
public class UUID_Demo { 
    public static void main(String[] args) 
    { 
  
        // Get the string 
        String UUID_name 
            = "58e0a7d7-eebc-11d8-9669-0800200c9a66"; 
  
        // Displaying the UUID 
        System.out.println("The specified String is: "
                           + UUID_name); 
  
        // Creating the UUID 
        UUID UUID_1 
            = UUID 
                  .fromString(UUID_name); 
  
        // Displaying the UUID 
        System.out.println("The UUID from"
                           + " specified String: "
                           + UUID_1); 
    } 
}

輸出：

The specified String is: 58e0a7d7-eebc-11d8-9669-0800200c9a66
The UUID from specified String: 58e0a7d7-eebc-11d8-9669-0800200c9a66

相關用法

注：本文由純淨天空篩選整理自Chinmoy Lenka大神的英文原創作品 UUID fromString() Method in Java with Examples。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。