Java Vector hashCode（）方法与示例

刺骨的言语ヽ痛彻心扉 2023-03-05 13:29 14阅读 0赞

## 矢量类hashCode()方法 **(**Vector Class hashCode() method**)** ##

*  **hashCode() method** is available in java.util package.
    
    **hashCode()方法**在java.util包中可用。
 *  **hashCode() method** is used to retrieve hashcode value for this Vector.
    
    **hashCode()方法**用于检索此Vector的哈希码值。
 *  **hashCode() method** is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
    
    **hashCode()方法**是一个非静态方法，只能通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。
 *  **hashCode() method** does not throw an exception at the time of returning hash code.
    
    **hashCode()方法**在返回哈希码时不会引发异常。

**Syntax:**

**句法：**

public int hashCode();

**Parameter(s):**

**参数：**

*  It does not accept any parameter.
    
    它不接受任何参数。

**Return value:**

**返回值：**

The return type of the method is int, it gets hashcode value for this Vector.

方法的返回类型为int ，它获取此Vector的哈希码值。

**Example:**

**例：**

// Java program to demonstrate the example 
    // of int hashCode() method of Vector 
    
    import java.util.*;
    
    public class HashCodeOfVector {
        
        public static void main(String[] args) {
        
            // Instantiates a Vector object  with
            // initial capacity of "10"
            Vector < String > v = new Vector < String > (10);
    
            // By using add() method is to add the
            // elements in this v
            v.add("C");
            v.add("C++");
            v.add("JAVA");
    
            // Display Vector
            System.out.println("v: " + v);
    
            // By using hashCode() method is to
            // return the hash code value of
            // this vector v
            int hc = v.hashCode();
    
            // Display hash code
            System.out.println("v.hashCode(): " + hc);
        }
    }

**Output**

**输出量**

v: [C, C++, JAVA]
    v.hashCode(): 4402561

> 翻译自: [https://www.includehelp.com/java/vector-hashcode-method-with-example.aspx][https_www.includehelp.com_java_vector-hashcode-method-with-example.aspx]

[https_www.includehelp.com_java_vector-hashcode-method-with-example.aspx]: https://www.includehelp.com/java/vector-hashcode-method-with-example.aspx