1. WIKI教程
2. Java.lang包
3. int hashCode()

int hashCode()

描述 (Description)

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

声明 (Declaration)

以下是java.lang.Enum.hashCode()方法的声明

public final int hashCode()

参数 (Parameters)

NA

返回值 (Return Value)

此方法返回此枚举常量的哈希码。

异常 (Exception)

NA

例子 (Example)

以下示例显示了java.lang.Enum.hashCode（）方法的用法。

package com.iowiki;
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());    
   }
} 

让我们编译并运行上面的程序，这将产生以下结果 -

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