Exception in main java.lang.ClassCastException:class java.lang.String can't be cast to class

I am getting the clasCastException while processing the json data.

I want to get "employeeid" from a JSON response and want to write later the employee IDs in a new Excel file. However, I am getting the class cast exception - String can not be cast into an Object.

I have pasted my code below as I am new to this so your help will be really appreciated.

here is my JSON Response:

{
    "msg": "Successful",
    "displaycount": "50",
    "totalcount": "1294",
    "userdetails": [
        {
            "employeeid": "132421",
            "userKey": 17
        },
        {
            "employeeid": "112342",
            "userKey": 18
        },
        {
            "employeeid": "112341",
            "userKey": 19
        },
        {
            "employeeid": "112343",
            "userKey": 20
        },
        {
            "employeeid": "99954",
            "userKey": 21
        },
    ],
    "errorCode": "0"
}

Code:

package api.src;

import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import com.opencsv.CSVWriter;
import java.io.*;

import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;

public class callAPI {

	 static String[] finalResult;
	 public static void main(String[] args) throws URISyntaxException, IOException, InterruptedException, ParseException {

		HttpRequest request = HttpRequest.newBuilder()
			.uri(URI.create("*****"))
			.header("X-RapidAPI-Host", "***********")
			.header("Content-Type", "application/json")
			.header("Authorization",**********)
			.method("POST", HttpRequest.BodyPublishers.noBody())
			.build();

	System.out.println("Connected "+request);

	try {
		String path = "D:/Sonika/JARs/httpresponse.json";

		HttpResponse<String> response = null;
		response = HttpClient.newHttpClient().send(request, 
        HttpResponse.BodyHandlers.ofString());
		int statusCode = response.statusCode();
		System.out.println(statusCode);

		System.out.println(response.body());
		try (PrintWriter out = new PrintWriter(new FileWriter(path))) {
			out.write(response.body().toString());
		}

        JSONParser parse = new JSONParser();
		JSONObject jobj = (JSONObject) parse.parse(new FileReader(path));
		JSONArray jsonarr_1 = (JSONArray) jobj.get("userdetails");

		//Get data for userdetails array
		for (Object element : jsonarr_1) {
		//Store the JSON objects in an array
		//Get the index of the JSON object and print the values as per the index
		JSONObject jsonobj_1 = (JSONObject)element;
		finalResult =  (String[]) jsonobj_1.get("employeeid");
		System.out.println("\nEmployee ID: "+finalResult);

		}	
	}
	
	catch(IOException e) {
	    // handle not expected exception
	    e.printStackTrace();
	}
	}
	public void writingCSVFile(){
		try {
			CSVWriter  file = new CSVWriter(new FileWriter(new File("D:/Sonika/JARs/OutputExcelfile.xlsx")));
			String[] colName = { "Employee ID"};
			file.writeNext(colName);
			file.writeNext(finalResult);
			file.close();
		} 
		catch (Exception e) {
			e.printStackTrace();
		}
	}
	
}