java.lang.ClassCastException: org.json.simple.JSONArray cannot be cast to org.json.simple.JSONObject

How do I solve this?
this is my issue:
java.lang.ClassCastException: org.json.simple.JSONArray cannot be cast to org.json.simple.JSONObject at parseJSONError.main(parseJSONError.java:17)

This is my code:
import org.json.simple.JSONArray; import org.json.simple.JSONObject; import org.json.simple.parser.JSONParser; public class parseJSONError { public static void main(String[] args) { // TODO Auto-generated method stub try { String errorMessage = "[{\"messageType\":\"ERROR\",\"messageText\":\"null\",\"messageNumber\":\"1291205\",\"messageAppendedText\":\"The Assignee field must contain a value.  Choose an assignee from the associated field menu, then save the Incident.\"}]"; JSONParser parser = new JSONParser(); Object obj = parser.parse(errorMessage); JSONArray jsonarray = new JSONArray(); jsonarray.add(obj); for (int i = 0; i < jsonarray.size(); i++) { System.out.println("jsonarray get("+i+") = "+jsonarray.get(i)); JSONObject jsonObject = (JSONObject)jsonarray.get(i);    System.out.println("messageType = "+(String) jsonObject.get("messageType"));    System.out.println("messageText = "+(String) jsonObject.get("messageText"));    System.out.println("messageNumber = "+(String) jsonObject.get("messageNumber"));    System.out.println("messageAppendedText = "+(String) jsonObject.get("messageAppendedText")); } }catch(Exception ex) { ex.printStackTrace(); } } }

Below is the JSON:
[   {      "messageAppendedText": "The Assignee field must contain a value.  Choose an assignee from the associated field menu, then save the Incident.",      "messageText": "null",      "messageType": "ERROR",      "messageNumber": "1291205"   } ]

Let me know if you need more details.

Thanks,
KP.

Parsing your JSON yields an array. Then you add it to a new array, so you have an array in an array.

Don't create the new JSONArray. Just cast the parsed object.

Stephan van Hulst wrote:Parsing your JSON yields an array. Then you add it to a new array, so you have an array in an array.

Don't create the new JSONArray. Just cast the parsed object.

Thank you Stephan.
Following advice, I have change the code as below and now it is working for me.

import org.json.simple.JSONArray; import org.json.simple.JSONObject; import org.json.simple.parser.JSONParser; public class parseJSONError { public static void main(String[] args) { // TODO Auto-generated method stub try { String errorMessage = "[{\"messageType\":\"ERROR\",\"messageText\":\"null\",\"messageNumber\":\"1291205\",\"messageAppendedText\":\"The Assignee field must contain a value.  Choose an assignee from the associated field menu, then save the Incident.\"}]"; JSONParser parser = new JSONParser(); Object obj = parser.parse(errorMessage); JSONArray jsonarray = (JSONArray)obj; System.out.println("jsonarray size = "+jsonarray.size()); for (int i = 0; i < jsonarray.size(); i++) { System.out.println("jsonarray get("+i+") = "+jsonarray.get(i)); JSONObject jsonObject = (JSONObject)jsonarray.get(i);    System.out.println("messageType = "+(String) jsonObject.get("messageType"));    System.out.println("messageText = "+(String) jsonObject.get("messageText"));    System.out.println("messageNumber = "+(String) jsonObject.get("messageNumber"));    System.out.println("messageAppendedText = "+(String) jsonObject.get("messageAppendedText")); } }catch(Exception ex) { ex.printStackTrace(); } } }

and expected output that I have got:
messageType = ERROR messageText = null messageNumber = 1291205 messageAppendedText = The Assignee field must contain a value.  Choose an assignee from the associated field menu, then save the Incident.

Thank you

           Object obj = parser.parse(errorMessage);            JSONArray jsonarray = (JSONArray)obj; This isn't "wrong" per se, but can be made more concise:
           JSONArray jsonarray = (JSONArray) parser.parse(errorMessage);