Java中的 ParsePosition getIndex() 方法与示例

Java.text.ParsePosition类的getIndex()方法用于检索此 ParsePositon 对象的当前解析位置。

句法：

public int getIndex()

参数：此方法不接受任何参数作为参数。

返回值：该方法返回此解析位置对象的当前解析位置。

以下是说明getIndex()方法的示例：

示例 1：

// Java program to demonstrate
// getIndex() 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(1);
  
            // set index for the parsing error
            pos.setErrorIndex(3);
  
            // getting the current
            // ParsePosition of
            // using getIndex() method
            int i = pos.getIndex();
  
            // display result
            System.out.println(
                "current parse position: "
                + Integer.toString(i));
        }
  
        catch (ClassCastException e) {
  
            System.out.println(e);
        }
    }
}

输出：

current parse position: 1

示例 2：

// Java program to demonstrate
// getIndex() 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(1);
  
            // set index for current
            // Parse Position
            pos.setIndex(3);
  
            // getting the current
            // ParsePosition of
            // using getIndex() method
            int i = pos.getIndex();
  
            // display result
            System.out.println(
                "current parse position: "
                + Integer.toString(i));
        }
  
        catch (ClassCastException e) {
  
            System.out.println(e);
        }
    }
}

输出：

current parse position: 3

参考： https://docs.oracle.com/javase/9/docs/api/ Java/text/ParsePosition.html#getIndex–