Reading JSON files using JSON.simple

In order to perform this recipe, we will require the following:

 
        } catch (FileNotFoundException e) { 
                 //Your exception handling here 
              } catch (IOException e) { 
                 //Your exception handling here 
              } catch (ParseException e) { 
                 //Your exception handling here 
              } 
        } 

The entire class, the method described in this recipe, and the driver method to run the method are as follows:

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 JsonReading { 
   public static void main(String[] args){ 
      JsonReading jsonReading = new JsonReading(); 
      jsonReading.readJson("C:/testJSON.json"); 
   } 
   public void readJson(String inFileName) { 
      JSONParser parser = new JSONParser(); 
      try { 
         Object obj = parser.parse(new FileReader(inFileName)); 
         JSONObject jsonObject = (JSONObject) obj; 
 
         String name = (String) jsonObject.get("book"); 
         System.out.println(name); 
 
         String author = (String) jsonObject.get("author"); 
         System.out.println(author); 
 
         JSONArray reviews = (JSONArray) jsonObject.get("messages"); 
         Iterator<String> iterator = reviews.iterator(); 
         while (iterator.hasNext()) { 
            System.out.println(iterator.next()); 
         } 
      } catch (FileNotFoundException e) { 
         //Your exception handling here 
      } catch (IOException e) { 
         //Your exception handling here 
      } catch (ParseException e) { 
         //Your exception handling here 
      } 
   } 
} 
 

On successful execution of the code, you will be able to see the contents of the input file on the standard output.