Java Class hashCode()用法及代碼示例

java.lang.Class類的hashCode()方法用於獲取此實體的hashCode表示形式。此方法返回一個整數值，即hashCode。

用法:

public int hashCode()

參數：此方法不接受任何參數。

返回值：此方法返回一個整數值，即hashCode。

下麵的程序演示了hashCode()方法。

範例1：

// Java program to demonstrate hashCode() method 
  
public class Test { 
    public static void main(String[] args) 
        throws ClassNotFoundException 
    { 
        // returns the Class object for the class 
        // with the specified name 
        Class c1 = Class.forName("java.lang.String"); 
  
        System.out.println("Class represented by c1:"
                         + c1); 
  
        // hashCode method on c1 
        System.out.println("HashCode value:"
                           + c1.hashCode()); 
    } 
}

輸出：

Class represented by c1:class java.lang.String
HashCode value:589431969

範例2：

// Java program to demonstrate hashCode() method 
  
public class Test { 
    public static void main(String[] args) 
        throws ClassNotFoundException 
    { 
        // returns the Class object for the class 
        // with the specified name 
        Class c1 = int.class; 
  
        System.out.println("Class represented by c1:"
                         + c1); 
  
        // hashCode method on c1 
        System.out.println("HashCode value:"
                           + c1.hashCode()); 
    } 
}

輸出：

Class represented by c1:int
HashCode value:589431969

參考： https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html#hashCode-

相關用法

注：本文由純淨天空篩選整理自srinam大神的英文原創作品 Class hashCode() 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。