Java Class hashCode()用法及代码示例

java.lang.Class类的hashCode()方法用于获取此实体的hashCode表示形式。此方法返回一个整数值，即hashCode。

用法:

public int hashCode()

参数：此方法不接受任何参数。

返回值：此方法返回一个整数值，即hashCode。

下面的程序演示了hashCode()方法。

范例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()); 
    } 
}

输出：

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

范例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()); 
    } 
}

输出：

Class represented by c1:int
HashCode value:589431969

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

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注：本文由纯净天空筛选整理自srinam大神的英文原创作品 Class 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。