Java中的 ParsePosition toString() 方法与示例

Java.text.ParsePosition类的toString()方法用于检索以字符串形式表示的解析位置对象。
句法：

public String toString()

参数：此方法不接受任何参数作为参数。
返回值：该方法返回以字符串形式表示的解析位置对象。
下面是说明toString()方法的示例：
示例 1：

Java

// Java program to demonstrate
// toString() 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(500);
 
            // setting error index
            pos.setErrorIndex(30);
 
            // getting string representation
            // of this ParsePosition Object
            // using toString() method
            String i = pos.toString();
 
            // display result
            System.out.println(
                "ParsePosition: "
                + i);
        }
 
        catch (ClassCastException e) {
 
            System.out.println(e);
        }
    }
}

输出：

ParsePosition: java.text.ParsePosition[index=500,errorIndex=30]

示例 2：

Java

// Java program to demonstrate
// toString() 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);
 
            // setting error index
            pos.setErrorIndex(3000);
 
            // getting string representation
            // of this ParsePosition Object
            // using toString() method
            String i = pos.toString();
 
            // display result
            System.out.println(
                "ParsePosition: "
                + i);
        }
 
        catch (ClassCastException e) {
 
            System.out.println(e);
        }
    }
}

输出：

ParsePosition: java.text.ParsePosition[index=-1,errorIndex=3000]

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