Java CollationElementIterator reset()用法及代碼示例

java.text.CollationElementIterator類的reset()方法用於將迭代器的光標重置為輸入字符串的開頭。

用法:

public void reset()

參數：此方法不接受任何參數。

返回值：此方法無返回值。

下麵是說明reset()方法的示例：

範例1：

// Java program to demonstrate 
// reset() method 
  
import java.text.*; 
import java.util.*; 
import java.io.*; 
  
public class GFG { 
    public static void main(String[] argv) 
    { 
        // creating and initializing testString 
        String test = "abcd"; 
  
        // creating and initializing 
        // RuleBasedCollator object 
        RuleBasedCollator rbc 
            = (RuleBasedCollator)(Collator.getInstance()); 
  
        // creating and intiallizing 
        // CollationElementIterator 
        CollationElementIterator cel 
            = rbc.getCollationElementIterator(test); 
  
        // setting cursor of iterator 
        cel.setOffset(2); 
        cel.next(); 
  
        // display the result 
        System.out.println( 
            "current offset before calling reset() "
            + cel.getOffset()); 
  
        // reset the cursor to the 
        // beginning of the string 
        // using reset() method 
        cel.reset(); 
  
        // display the result 
        System.out.println( 
            "\ncurrent offset after calling reset() "
            + cel.getOffset()); 
    } 
}

輸出：

current offset before calling reset() 3

current offset after calling reset() 0

範例2：

// Java program to demonstrate 
// reset() method 
  
import java.text.*; 
import java.util.*; 
import java.io.*; 
  
public class GFG { 
    public static void main(String[] argv) 
    { 
        // creating and initializing 
        // testString 
        String test = "abcd"; 
  
        // creating and initializing 
        // RuleBasedCollator object 
        RuleBasedCollator rbc 
            = (RuleBasedCollator)(Collator.getInstance()); 
  
        // creating and intiallizing 
        // CollationElementIterator 
        CollationElementIterator cel 
            = rbc.getCollationElementIterator(test); 
  
        // setting cursor of iterator 
        cel.setOffset(3); 
        cel.previous(); 
  
        // display the result 
        System.out.println( 
            "current offset before calling reset() "
            + cel.getOffset()); 
  
        // reset the cursor to the beginning of the string 
        // using reset() method 
        cel.reset(); 
  
        // display the result 
        System.out.println( 
            "\ncurrent offset after calling reset() "
            + cel.getOffset()); 
    } 
}

輸出：

current offset before calling reset() 2

current offset after calling reset() 0

參考： https://docs.oracle.com/javase/9/docs/api/java/text/CollationElementIterator.html#reset-

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注：本文由純淨天空篩選整理自RohitPrasad3大神的英文原創作品 CollationElementIterator reset() method in Java with Examples。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。