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📜  Java中的 CharacterIterator setIndex() 方法及示例

📅  最后修改于: 2022-05-13 01:55:02.906000             🧑  作者: Mango

Java中的 CharacterIterator setIndex() 方法及示例

Java中Java .text.CharacterIterator接口setIndex()方法用来设置这个CharacterIterator要读取的当前索引。此方法将要设置的索引作为参数,并在该索引处设置此 CharacterIterator 的索引,然后返回该字符。

句法:

public char setIndex(int index)

参数:该方法以要设置的索引为参数,设置此 CharacterIterator 的索引。

返回值:该方法返回该方法设置的索引处的字符。

异常:如果指定的索引不在有效范围内(getBeginIndex()、getEndIndex() – 1),则此方法抛出 IllegalArgumentException。

程序:

// Java program to demonstrate
// the above method
  
import java.text.*;
import java.util.*;
  
public class CharacterIteratorDemo {
    public static void main(String[] args)
    {
  
        CharacterIterator characterIterator
            = new StringCharacterIterator(
                "GeeksForGeeks");
  
        System.out.println("Current Index: "
                           + characterIterator
                                 .getIndex());
  
        int index = 5;
  
        System.out.println("Updated the index to : "
                           + index);
  
        System.out.println("Character at new"
                           + " current index: "
                           + characterIterator
                                 .setIndex(index));
    }
}
输出:
Current Index: 0
Updated the index to : 5
Character at new current index: F

参考: https://docs.oracle.com/javase/9/docs/api/ Java/text/CharacterIterator.html#setIndex-int-