Java Date hashCode()方法与示例
日期類(lèi)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()方法用于檢索此Date對(duì)象的哈希碼。
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()方法是一個(gè)非靜態(tài)方法,只能通過(guò)類(lèi)對(duì)象訪問(wèn),如果嘗試使用類(lèi)名訪問(wèn)該方法,則會(huì)收到錯(cuò)誤消息。
hashCode() method does not throw an exception at the time of returning hash code.
hashCode()方法在返回哈希碼時(shí)不會(huì)引發(fā)異常。
Syntax:
句法:
public int hashCode();Parameter(s):
參數(shù):
It does not accept any parameter.
它不接受任何參數(shù)。
Return value:
返回值:
The return type of this method is int, it returns hash code value of this Date object.
此方法的返回類(lèi)型為int ,它返回此Date對(duì)象的哈希碼值。
Example:
例:
// Java program to demonstrate the example // of int hashCode() method of Dateimport java.util.*;public class HashCodeOfDate {public static void main(String[] args) {// create a Date object with datesDate this_date = new Date(2016, 8, 20);// By using hashCode() method is to return // the hash code of this Dateint hash_code = this_date.hashCode();// Display hash codeSystem.out.println("this_date.hashCode(): " + hash_code);} }Output
輸出量
this_date.hashCode(): 1556379615翻譯自: https://www.includehelp.com/java/date-hashcode-method-with-example.aspx
總結(jié)
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