Java 中的 rulesbasedcollator getcollectionelementiterator(字符串)方法

原文:https://www . geeksforgeeks . org/rulesbasedcollator-getcollectionelementiteratorstring-method-in-Java/

Java . text . rulesbasedcollator 类的getcollectionelementiterator()方法用于获取给定字符串的归类元素迭代器的对象。

语法:

public CollationElementIterator
       getCollationElementIterator(String source)

参数:该方法接受字符串对象作为参数。

返回值:这个方法返回给定字符串的排序元素迭代器的对象。

以下是说明getcollectionlementiterator()方法的示例:

例 1:

// Java program to demonstrate
// getCollationElementIterator() 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);

            // Creating and initializing
            // the String Object
            String str = "ABABCC";

            // getting CollationElementIterator Object
            // for the given String
            // using getCollationElementIterator() method
            CollationElementIterator key
                = col.getCollationElementIterator(str);

            // display result
            System.out.println("CollationElementIterator is : "
                               + key);
        }

        catch (ClassCastException e) {

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

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

输出:

CollationElementIterator is : java.text.CollationElementIterator@7d4991ad

例 2:

// Java program to demonstrate
// getCollationElementIterator() 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 & a < c";

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

            // Creating and initializing the String Object
            String str = "GEeks";

            // getting CollationElementIterator Object
            // for the given String
            // using getCollationElementIterator() mehtod
            CollationElementIterator key
                = col.getCollationElementIterator(str);

            // display result
            System.out.println("CollationElementIterator is : "
                               + key);
        }

        catch (ClassCastException e) {

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

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

输出:

CollationElementIterator is : java.text.CollationElementIterator@7d4991ad

参考:https://docs . Oracle . com/javase/9/docs/API/Java/text/rulesbasedcollator . html # getcollateionelementiterator-Java . lang . string-

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