MathContext类的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()方法用于获取此MathContext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：

• None

  没有

Return value:

返回值：

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

此方法的返回类型为int ，它检索此MathContext哈希码值。

Example:

例：

// Java program to demonstrate the example // of int hashCode() method of MathContextimport 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

输出量

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

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