Java Enum hashCode()方法

java.lang.Enum.hashCode() 方法返回枚举常量的哈希码。

1 语法

public final int hashCode()

2 参数

无

3 返回值

此方法返回枚举常量的哈希码。

4 示例 

package com.yiidian;

/**
 * 一点教程网： http://www.yiidian.com
 */
/**
 * Java Enum hashCode()方法
 */
import java.lang.*;

// enum showing programming languages
enum Language {
   C, Java, PHP;
}

public class EnumDemo {

   public static void main(String args[]) {
       
     // returns the name and hashCode of this enum constant
     System.out.print("Programming in " + Language.C.toString());      
     System.out.println(", Hashcode = " + Language.C.hashCode()); 
     System.out.print("Programming in " + Language.Java.toString());  
     System.out.println(", Hashcode = " + Language.Java.hashCode()); 
     System.out.print("Programming in " + Language.PHP.toString());  
     System.out.println(", Hashcode = " + Language.PHP.hashCode());    
   }
}

输出结果为：

Programming in C, Hashcode = 1569228633
Programming in Java, Hashcode = 778966024
Programming in PHP, Hashcode = 1021653256