📜  Java中的 DateFormat hashCode() 方法及示例

📅  最后修改于: 2022-05-13 01:55:01.650000             🧑  作者: Mango

Java中的 DateFormat hashCode() 方法及示例

DateFormat 类hashCode()方法用于返回此 DateFormat 对象的哈希码值。哈希码是整数类型。

句法:

public int hashCode()

参数:该方法不带任何参数。

返回值:该方法返回此 DateFormat 对象的哈希码值,为整数类型。

下面的程序说明了 DateFormat 的 hashCode() 方法的工作:
示例 1:

// Java to illustrate hashCode() method
  
import java.text.*;
import java.util.*;
  
public class DateFormat_Demo {
    public static void main(String[] args)
    {
        // Initializing DateFormat
        DateFormat DFormat
            = DateFormat.getDateTimeInstance();
  
        // Displaying the formats
        Date date = new Date();
        String str_Date1 = DFormat.format(date);
        System.out.println("The Original: "
                           + (str_Date1));
  
        // Displaying the hash code
        System.out.println("The hash code: "
                           + DFormat.hashCode());
    }
}
输出:
The Original: Mar 27, 2019 10:20:51 AM
The hash code: 2034585966

示例 2:

// Java to illustrate hashCode() method
  
import java.text.*;
import java.util.*;
  
public class DateFormat_Demo {
    public static void main(String[] args)
    {
        // Initializing DateFormat
        DateFormat DFormat
            = new SimpleDateFormat("MM/dd/yyyy");
  
        // Displaying the formats
        Date date = new Date();
        String str_Date1 = DFormat.format(date);
        System.out.println("The Original: "
                           + (str_Date1));
  
        // Displaying the hash code
        System.out.println("The hash code: "
                           + DFormat.hashCode());
    }
}
输出:
The Original: 03/27/2019
The hash code: 2087096576

参考: https: Java/text/DateFormat.html#hashCode()