Java UUID hashCode()用法及代码示例

Java中UUID类的hashCode()方法通常用于获取UUID的哈希码值。

用法:

public int hashCode()

参数：此方法不带任何参数。

返回值：此方法返回一个整数值，该值是此UUID实例的hashCode值。

以下示例程序旨在说明hashCode()方法的用法：

示例1:

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

输出：

UUID: 58e0a7d7-eebc-11d8-9669-0800200c9a66
The hashCode value is: 3744873

示例2:

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

输出：

UUID: 5fc03087-d265-11e7-b8c6-83e29cd24f4c
The hashCode value is: -1447957042

相关用法

注：本文由纯净天空筛选整理自Chinmoy Lenka大神的英文原创作品 UUID hashCode() Method in Java with Examples。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。