Java ParsePosition getErrorIndex()用法及代碼示例

java.text.ParsePosition類的getErrorIndex()方法用於檢索可能發生解析錯誤的索引。

用法:

public int getErrorIndex()

參數：此方法不接受任何參數作為參數。

返回值：此方法返回可能發生解析錯誤的索引。

下麵是說明getErrorIndex()方法的示例：

範例1：

// Java program to demonstrate 
// getErrorIndex() method 
  
import java.text.*; 
import java.util.*; 
import java.io.*; 
  
public class GFG { 
    public static void main(String[] argv) 
    { 
        try { 
  
            // Creating and initializing 
            // new ParsePosition Object 
            ParsePosition pos 
                = new ParsePosition(0); 
  
            // set index for the parsing error 
            pos.setErrorIndex(3); 
  
            // getting index at which 
            // parsing error may come 
            // using getErrorIndex() method 
            int i = pos.getErrorIndex(); 
  
            // display result 
            System.out.println( 
                "index at which parse error may occur:"
                + Integer.toString(i)); 
        } 
  
        catch (ClassCastException e) { 
  
            System.out.println(e); 
        } 
    } 
}

輸出：

index at which parse error may occur:3

範例2：

// Java program to demonstrate 
// getErrorIndex() method 
  
import java.text.*; 
import java.util.*; 
import java.io.*; 
  
public class GFG { 
    public static void main(String[] argv) 
    { 
        try { 
  
            // Creating and initializing 
            // new ParsePosition Object 
            ParsePosition pos 
                = new ParsePosition(0); 
  
            // getting index at which 
            // parsing error may come 
            // using getErrorIndex() method 
            int i = pos.getErrorIndex(); 
  
            // display result 
            if (i != -1) 
                System.out.println( 
                    "index at which parse error may occur:"
                    + Integer.toString(i)); 
            else
                System.out.println("error index is not set"); 
        } 
  
        catch (ClassCastException e) { 
  
            System.out.println(e); 
        } 
    } 
}

輸出：

error index is not set

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

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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 ParsePosition getErrorIndex() method in Java with Example。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。