Java 中的 Collator getCollationKey()方法,示例

原文:https://www . geeksforgeeks . org/collator-getcollationkey-method-in-Java-with-example/

java.text.Collator 类getCollationKey() 方法用于获取从传递到其中的字符串转换而来的一系列位。

语法:

public abstract CollationKey
       getCollationKey(String source)

参数:该方法接受字符串对象作为参数。 返回值:该方法返回从传递给它的字符串转换而来的一系列位。

以下是说明 getCollationKey() 方法的示例:

例 1:

Java 语言(一种计算机语言,尤用于创建网站)

// Java program to demonstrate
// getCollationKey() 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 series of bits
            // using getCollationKey() method
            CollationKey key
                = col.getCollationKey("Geek");

            // display result
            System.out.println(
                "Series of bits are :- "
                + key.getSourceString());
        }

        catch (ClassCastException e) {

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

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

Output: 

Series of bits are :- Geek

例 2:

Java 语言(一种计算机语言,尤用于创建网站)

// Java program to demonstrate
// getCollationKey() 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 series of bits
            // using getCollationKey() method
            CollationKey key
                = col.getCollationKey("CodeBlock");

            // display result
            System.out.println(
                "Series of bits are :- "
                + key.getSourceString());
        }

        catch (ClassCastException e) {

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

Output: 

Series of bits are :- CodeBlock

参考:T2【https://docs . Oracle . com/javase/9/docs/API/Java/text/collator . html # getCollationKey-Java . lang . string-T4】