CollationElementIterator setText(String) method in Java with Example

2025年5月3日 | 阅读3分钟

java.text.CollationElementIterator 类有一个 setText() 函数。CollationElementIterator 对象要迭代的新的源字符串是通过 CollationElementIterator 类设置的。

语法

参数： 迭代器将迭代通过此方法传递给它的全新源字符串。

返回值： 无返回值。

示例 1

该代码通过使用 RuleBasedCollator 和 CollationElementIterator 来处理区分区域设置的字符串比较。CollationElementIterator 的 setText() 可以动态修改正在处理的字符串，从而实现对各种输入的灵活处理。该代码说明了如何使用 primaryOrder() 提取主排序键，它代表主要的排序级别（忽略重音或大小写等次要特征）。该方法能够跨语言实现一致且符合文化习惯的字符串比较和排序，这对于管理特定区域设置的排序要求至关重要。

实施

文件名： SetStringExample1.java

import java.text.*;
import java.util.*;
import java.io.*;
public class SetStringExample1 
{
	public static void main(String[] argv)
	{
		// initialize and create the string
		String input = "Hello";
		// initialize and create the
		// RuleBasedCollator object
		RuleBasedCollator rulecollator = (RuleBasedCollator)(Collator.getInstance());
		// initialize and create the
		// CollationElementIterator
		CollationElementIterator collation = rulecollator.getCollationElementIterator(input);
		String s = "World";
		// using the setText() method 
		// to set new text
		collation.setText(s);
		for (int i = 1; i <= s.length(); i++) 
		{
			// The primary order() method is used to obtain 
			// the primary component of each element.
			int val = CollationElementIterator .primaryOrder(collation.next());
			System.out.println("The primary order " + "for the order "+ i + " is given by " + val);
		}
	}
}   

输出

 
The primary order for the order 1 is given by 105
The primary order for the order 2 is given by 97
The primary order for the order 3 is given by 100
The primary order for the order 4 is given by 94
The primary order for the order 5 is given by 85

示例 2

该代码通过利用 RuleBasedCollator 和 CollationElementIterator 来处理区分区域设置的字符串。它通过 setText() 更改待分析的文本，从而可以动态处理各种文本。为了确定核心排序标准，例如字母顺序，同时忽略大小写和重音等辅助方面，primaryOrder() 方法获取每个元素的主要排序值。该功能对于实践符合文化习惯且考虑了不同区域各种语言规范的字符串排序和比较至关重要。

实施

文件名： SetStringExample2.java

import java.text.*;
import java.util.*;
import java.io.*;
public class SetStringExample2
{
	public static void main(String[] argv)
	{
		// initialize and create the string
		String input = "Hello";
		// initialize and create the
		// RuleBasedCollator object
		RuleBasedCollator rulecollator = (RuleBasedCollator)(Collator.getInstance());
		// initialize and create the
		// CollationElementIterator
		CollationElementIterator collation = rulecollator.getCollationElementIterator(input);
		String s = "Welcome To World";
		// using the setText() method 
		// to set new text
		collation.setText(s);
		for (int i = 1; i <= s.length(); i++) 
		{
			// The primary order() method is used to obtain 
			// the primary component of each element.
			int val = CollationElementIterator .primaryOrder(collation.next());
			System.out.println("The primary order " + "for the order "+ i + " is given by " + val);
		}
	}
}   

输出

 
The primary order for the order 1 is given by 105
The primary order for the order 2 is given by 87
The primary order for the order 3 is given by 94
The primary order for the order 4 is given by 84
The primary order for the order 5 is given by 97
The primary order for the order 6 is given by 95
The primary order for the order 7 is given by 87
The primary order for the order 8 is given by 0
The primary order for the order 9 is given by 102
The primary order for the order 10 is given by 97
The primary order for the order 11 is given by 0
The primary order for the order 12 is given by 105
The primary order for the order 13 is given by 97
The primary order for the order 14 is given by 100
The primary order for the order 15 is given by 94
The primary order for the order 16 is given by 85

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CollationElementIterator setText(String) method in Java with Example

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