MathContext類的hashCode()方法 (MathContext Class hashCode() method)

• hashCode() method is available in java.math package.

  hashCode()方法在java.math包中可用。

• hashCode() method is used to get the hash code value of this MathContext.

  hashCode()方法用于獲取此MathContext的哈希碼值。

• 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()方法是一個非靜態方法，只能通過類對象訪問，如果嘗試使用類名稱訪問該方法，則會收到錯誤消息。

• hashCode() method does not throw an exception at the time of returning hash code.

  hashCode()方法在返回哈希碼時不會引發異常。

Syntax:

句法：

    public int hashCode();

Parameter(s):

參數：

• None

  沒有

Return value:

返回值：

The return type of this method is int, it retrieves this MathContext hash code value.

此方法的返回類型為int ，它檢索此MathContext哈希碼值。

Example:

例：

// Java program to demonstrate the example 
// of int hashCode() method of MathContext
import java.math.*;
public class HashCodeOfMC {
public static void main(String args[]) {
// Initialize three MathContext objects  
MathContext ma_co1 = new MathContext(3, RoundingMode.CEILING);
MathContext ma_co2 = new MathContext(4);
MathContext ma_co3 = new MathContext(6, RoundingMode.FLOOR);
// returns the hash code of this MathContext
// ma_co1 
int hash_code = ma_co1.hashCode();
System.out.println("ma_co1.hashCode(): " + hash_code);
// returns the hash code of this MathContext
// ma_co2 
hash_code = ma_co2.hashCode();
System.out.println("ma_co2.hashCode(): " + hash_code);
// returns the hash code of this MathContext
// ma_co3 
hash_code = ma_co3.hashCode();
System.out.println("ma_co3.hashCode(): " + hash_code);
}
}

Output

輸出量

ma_co1.hashCode(): 1420167577
ma_co2.hashCode(): 931231881
ma_co3.hashCode(): -18805464

翻譯自: https://www.includehelp.com/java/mathcontext-hashcode-method-with-example.aspx