Error reading json file in java

Question

I searched for this issue on the site but couldn't find one. May I know what am I missing here?

package com.json;

import java.io.FileNotFoundException;  
import java.io.FileReader;  
import java.io.IOException;  
import java.util.Iterator;  
import org.json.simple.JSONArray;  
import org.json.simple.JSONObject;  
import org.json.simple.parser.JSONParser;  
import org.json.simple.parser.ParseException;  

public class JsonTest {  

 public static void main(String[] args) {  

  JSONParser parser = new JSONParser();  

  try {  

   Object obj = parser.parse(new FileReader("E://file.json"));  

   JSONObject jsonObject = (JSONObject) obj;  

   String nameOfCountry = (String) jsonObject.get("Name");  
   System.out.println("Name Of Country: "+nameOfCountry);  

   long population = (Long) jsonObject.get("Population");  
   System.out.println("Population: "+population);  

   System.out.println("States are :");  
   JSONArray listOfStates = (JSONArray) jsonObject.get("States");  
   Iterator<String> iterator = listOfStates.iterator();  
   while (iterator.hasNext()) {  
    System.out.println(iterator.next());  
   }  

  } catch (FileNotFoundException e) {  
   e.printStackTrace();  
  } catch (IOException e) {  
   e.printStackTrace();  
  } catch (ParseException e) {  
   e.printStackTrace();  
  }  

 }  
}

{"Name":"EX","Population":1000000,"States":["MP","MH","RN"]}

Error: Unexpected character (ï) at position 0. at org.json.simple.parser.Yylex.yylex(Yylex.java:610) at org.json.simple.parser.JSONParser.nextToken(JSONParser.java:269) at org.json.simple.parser.JSONParser.parse(JSONParser.java:118) at org.json.simple.parser.JSONParser.parse(JSONParser.java:92)

Is that the actual contents of the JSON file? My suspicion is that your file has a "Lowercase I with Umlaut" (ï) hidden in it somewhere (possibly in the word "Population") and you haven't pasted the actual contents here, obscuring the error. — Shotgun Ninja
– Shotgun Ninja, Commented Sep 1, 2015 at 18:26
possible duplicate of stackoverflow.com/questions/23144848/… — Reins
– Reins, Commented Sep 1, 2015 at 18:28

Andreas · Accepted Answer · 2015-09-01 18:27:58Z

4

The error message show a weird character ï at position 0.

Your JSON file has a UTF-8 BOM (byte order mark), which starts with byte EF, that in code page ISO-8859-1 is the ï character.

Save your JSON file in ISO-8859-1, i.e. not in UTF-8. Java API's don't support BOM's.

Alternatively, save in UTF-8 without a BOM, and read in Java as UTF-8.

answered Sep 1, 2015 at 18:27

Andreas

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1 Comment

Don Over a year ago

Changed the file type to ANSI and the error disappeared. And!

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