I'm going to start by saying I'm a complete novice in Java. I've started computer science recently and I've got a project where I have to create a project to represent a server using sockets. The server will has to function as a control a library's book record/register. My professor provided a .json file with the book lists which I have to use.

I tried creating the project on VS Code, but after following these steps:

Downloaded the library from the Maven Repository.

Created a lib folder in your project's root directory and move the json-20230303.jar file to this folder.

My code couldn't import the library and this error appeared every time I tried to use the library:

"src\Gerenciador.java:2: error: package org.json does not exist import org.json.JSONArray;"

After a while I thought it would be easier to import the library on the Ide Eclipse, but after creating the project and adding it via the Build Path option, it still didn't work. Even though the library appeared in the Libraries section in the Java Build Path.

This error: "The type org.json.JSONObject is not accessible" keeps appearing.

I don't know how to fix the problem. I think I'm calling on the library wrong, but I don't know how I should do it. If there is any information missing, let me know and I'll provide it, it's my first time asking for help on a programming forum.

Hi all,

I am working with a JSON object and when I launch my project I get the following error:

java.lang.NoClassDefFoundError: org/json/JSONObject
     viewmodels.LaunchViewModel.buildNextLaunch(LaunchViewModel.java:64)

Looking at line 64...

JSONObject jsonObj = new JSONObject(getHTML("..."));

Looks like I have not setup the dependencies correctly. I am working with IntelliJ with Gradle and I have imported JSON into my external libraries as seen here...

https://i.imgur.com/8VqLFf9.jpg

and here...

https://i.imgur.com/MFupkXg.jpg

My question is does it need to be added to the build.gradle file? Here are my dependencies:

dependencies {
testCompile group: 'junit', name: 'junit', version: '4.11'
testCompile group: 'junit', name: 'junit', version: '4.12'
}

I think that may be the culprit? But I am still pretty new to this process so any pointers would be sweet.

Thanks!

Edit for mods: The two screenshots are of my external libraries, no code in those. I replaced the remaining screen shot with a code block. Thanks!

I have been trying to figure out this issue forever now but I can't seem to see what I'm doing wrong. I am using VSCode and added the json library (json-20220329.jar) to my referenced libraries. When I add the jar file the errors in my main file go away regarding JSONObject and JSONArray. Everything looks fine until I try running the code and it says that the "package org.json does not exist." I was wondering if anyone knew what could be the problem.

CODE: (App.java)

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;



import org.json.JSONObject;
import org.json.JSONArray;




public class App {
    public static void main(String[] args) {

        HttpClient client = HttpClient.newHttpClient();
        HttpRequest request = HttpRequest.newBuilder().uri(URI.create("https://jsonplaceholder.typicode.com/albums")).build();
        client.sendAsync(request, HttpResponse.BodyHandlers.ofString())
            .thenApply(HttpResponse::body)
            .thenAccept(System.out::println)
            .join();
    }

    public static String parse(String responseBody) {
        JSONArray albums = new JSONArray(responseBody);
        for (int i = 0; i < albums.length(); i++)
        {
            JSONObject album = albums.getJSONObject(i);
            int id = album.getInt("id");
            int userID = album.getInt("userId");
            String title = album.getString("title");
            System.out.println(id + "\t" + title + "\t" + userID);
        }
        return null;
    }
    
}

ERROR:

App.java:8: error: package org.json does not exist
import org.json.JSONObject;
               ^
App.java:9: error: package org.json does not exist
import org.json.JSONArray;
               ^
App.java:26: error: cannot find symbol
        JSONArray albums = new JSONArray(responseBody);
        ^
  symbol:   class JSONArray
  location: class App
App.java:26: error: cannot find symbol
        JSONArray albums = new JSONArray(responseBody);
                               ^
  symbol:   class JSONArray
  location: class App
App.java:29: error: cannot find symbol
            JSONObject album = albums.getJSONObject(i);
            ^
  symbol:   class JSONObject
  location: class App
5 errors