Retrieving each item from response body through Selenium with Java - json

Question

Through an API call, I will be able to get the below response.
{
"header": {
"studCode": "Active",
"studCentre": {
"centreCode": 1876,
"centreName": "Test Academy,
"centreAdmin": ADM1876
},
"studentId": "100301",
},
"body": {
"studLastName": "JUSTIN",
"studFirstName": "RIVERIA",
"subjects": [
{
"subject": "English Paper II",
"subject": "Mathematics Paper IV"
}
],
"schoolDetails": [
{
"schoolName": "TEST Public School",
"schoolCdoe": "A1882"
}
],
"feeDetails": [
{
"feeMode": "DEI1001",
"feePaid": "Yes"
}
],
"appearingFor": "Summer",
"appearingYear": "2022",
"language": "English"
"
}
}
I have to validate a few items from this response. For that, I tried with the below dependencies.
With json-org, the below statements are working.
JSONObject json = new JSONObject(response.toString());
String studentId = json.getJSONObject("header").getString("studId");
But, when I want to retrieve student first name then it's not working.
String firstName = jsonObj.getJSONObject("body").getString("studFirstName");
The below error is thrown:
org.json.JSONException: JSONObject["body"] not found.
Tried with json-path (com.jayway.jsonpath.JsonPath):
JsonPath.read(response.toString(), "$.header.studId");
The below error is thrown:
Exception in thread "main" java.lang.NoClassDefFoundError: net/minidev/asm/FieldFilter
Is there a way to retrieve value for any item from the json without specifying each item.
Say, it could be studId, studFirstName, subject, feeMode, etc.
A single statement or method to achieve this... any help on this please