java.lang.ClassNotFoundException: org.json.simple.parser.JSONParser

Question

I have included json-simple in my pom.xml for Maven:

<dependencies>
        <dependency>
            <groupId>com.googlecode.json-simple</groupId>
            <artifactId>json-simple</artifactId>
            <version>1.1.1</version>
        </dependency>
</dependencies>

And I keep getting this error:

Caused by: java.lang.ClassNotFoundException: org.json.simple.parser.JSONParser
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
        ... 3 more

Here is my code:

JSONObject testLatest = new JSONObject(Files.readString(Paths.get("test-latest.json")));
JSONObject currentServer = new JSONObject(Files.readString(Paths.get("current-server.json")));

String latestStability = testLatest.getJSONObject("response").getString("stability");
String latestMD5 = testLatest.getJSONObject("response").getString("md5");

String currentMD5 = currentServer.getJSONObject("response").getString("md5");

if (latestStability.equals("stable") && !latestMD5.equals(currentMD5)) {
   replaceCurrentServer(true);
   return true;
}

Here is a screenshot of my module settings in InteliJ:

Answer 1

I don't mean the module manager of IntelliJ.

If you add modules to your project you need a modular project . Such a project needs a class called module-info.java .

According to the openjfx documentation :

Add the module-info class, including the required modules javafx.controls and javafx.fxml . Since FXML uses reflection to access the controller in the module, this has to be opened to javafx.fxml . Finally, export the package org.openjfx .

See image

In your case the module-info.java file should look similar to this (maybe some differences) :

module com.example.project {
    requires javafx.controls;
    requires javafx.fxml;
    requires json.simple;
    requires javafx.graphics;

    opens com.example.project to javafx.fxml;
    exports com.example.project;
}

After that, your code should work.