Java 中的 Collator hashCode()方法，示例

原文:https://www . geesforgeks . org/collator-hashcode-method-in-Java-with-example/

java.text.Collator 类的 hashCode() 方法用于获取这个 Collator 对象的 hashCode。

语法:

public abstract int hashCode()

参数:此方法不接受任何参数。 返回值:该方法以整数格式返回哈希码值。

下面是举例说明 hashCode() 方法的例子:

例 1:

Java 语言(一种计算机语言，尤用于创建网站)

// Java program to demonstrate
// hashCode() method

import java.text.*;
import java.util.*;
import java.io.*;

public class GFG {
    public static void main(String[] argv)
    {
        try {

            // Creating and initializing new simple rule
            String simple = "< a < b < c < d";

            // Creating and initializing
            // new RuleBasedCollator Object
            RuleBasedCollator col
                = new RuleBasedCollator(simple);

            // getting hashCode of this object
            // using hashCode() method
            int hash = col.hashCode();

            // display result
            System.out.println("hashCode is :- "
                               + hash);
        }

        catch (ClassCastException e) {

            System.out.println("Exception thrown : "
                               + e);
        }
        catch (ParseException e) {

            System.out.println("Exception thrown : "
                               + e);
        }
    }
}

Output: 

hashCode is :- 1882448026

例 2:

Java 语言(一种计算机语言，尤用于创建网站)

// Java program to demonstrate
// hashCode() method

import java.text.*;
import java.util.*;
import java.io.*;

public class GFG {
    public static void main(String[] argv)
    {
        try {

            // Creating and initializing Collator Object
            Collator col
                = Collator.getInstance(Locale.UK);

            // getting hashCode of this object
            // using hashCode() method
            int hash = col.hashCode();

            // display result
            System.out.println("hashCode is :- " + hash);
        }

        catch (ClassCastException e) {

            System.out.println("Exception thrown : " + e);
        }
    }
}

Output: 

hashCode is :- 681002966

参考:https://docs . Oracle . com/javase/9/docs/API/Java/text/collator . html # hashCode–

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