Java Date hashCode（）方法与示例

柔光的暖阳◎ 2023-03-05 12:53 45阅读 0赞

## 日期类hashCode()方法 **(**Date 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 hash code of this Date object.
    
    **hashCode()方法**用于检索此Date对象的哈希码。
 *  **hashCode() method** is a non-static method, it is accessible with class object only and if we try to access the method with 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 this method is int, it returns hash code value of this Date object.

此方法的返回类型为int ，它返回此Date对象的哈希码值。

**Example:**

**例：**

// Java program to demonstrate the example 
    // of int hashCode() method of Date
    
    import java.util.*;
    
    public class HashCodeOfDate {
        
        public static void main(String[] args) {
        
            // create a Date object with dates
            Date this_date = new Date(2016, 8, 20);
    
            // By using hashCode() method is to return 
            // the hash code of this Date
            int hash_code = this_date.hashCode();
    
            // Display hash code
            System.out.println("this_date.hashCode(): " + hash_code);
        }
    }

**Output**

**输出量**

this_date.hashCode(): 1556379615

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

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