Dreadnought | PoC for detecting dumping code injection | Cybersecurity library

I am trying to get data from the internet in Flutter. But I am getting an error on JSON parsing. Can anyone tell me what is the problem?

I am trying to get data from this URL

I'm having an issue with Unity's FromJson method. From the error I'm assuming that there's something wrong with the JSON that I wrote, but I can't for the life of me figure out what it is. First, here's the error

I posted this question two days ago about attaching a ChangeListener to a ComboBox to dictate what output would be shown on a second ComboBox. To put this in short, the idea was that the first ComboBox shows some Unit Types, and depending on the Unit Type chosen would depend on the list of Units shown in the second ComboBox based on the Unit Type chosen. For example If you chose the "Elites" Unit Type in the first ComboBox the second ComboBox should be populated with all the "Elite" units.

Now the person who answered my original question helped a lot with the code in the ChangeListener and I did manage to get it working. However, currrently it only works if you add one single unit at a time to the Unit Type. Ideally I'd want to add an ArrayList or some other suitable data structure of units to the Unit Type, rather than individual units. This would cut down on code, and be more efficent.

So as you can see in this code snippet, currently the elites Unit Type addUnit method only accepts single strings at a time,

Right, i'm trying to create a program that allows a user to build a Space Marine (Warhammer 40k) army and theres a paticular portion of the program that i'm struggling with. This portion allows the user to select a 'Unit Type' from a ComboBox, then another ComboBox underneath is populated with all of the units for the 'Unit Type' you selected in the first ComboBox.

For example if you selected the Elites 'Unit Type' in the first ComboBox then the second ComboBox should be populated with all the units of the Elites 'Unit Type' which are as follows: "Dreadnought","Ironclad Dreadnought","Venerable Dreadnought", "Assault Terminator", "Centurion Assault", "Command", "Honour Guard", "Sternguard Veteran","Terminator","Vanguard Veterans". There are 8 'Unit Types' each with their own units.

The current setup I have to achieve this is; I have a List of 'Unit Types' called unitTypeList. This List holds all 8 'Unit Types'. I also have 8 other seperate lists (which each represent a 'Unit Type') that hold muliple units for that 'Unit Type' . Then I have one more list that holds each of the 8 seprate lists as mentioned before. So it's a List thats holds 8 other lists.

So to populate the first ComboBox with the 'Unit Types' I placed the unitTypeList in an ObservableList called unitTypeOlist. I then populated the first ComboBox with that ObservableList unitTypeOList. This works fine.

Now in order to populate the second ComboBox with the correct units, i decided to add a ChangeListener to the first ComboBox, so it can take the input of the first ComboBox and then correctly populate the second ComboBox with the units based on the selection of the 'Unit Type' in the first ComboBox.

But this is where the issue occurs. I created another ObservableList in the ChangeListener and place the List that holds the 8 seperate lists, that contain each unit for the 'Unit Type, in it. However when I try to run the program and select a 'Unit Type' from the first ComboBox the programs terminates with a gigantic error starting with; Exception in thread "JavaFX Application Thread" java.lang.ClassCastException: gui.model.Unit_Type cannot be cast to java.lang.Integer.

It's clearly something to do with the casting to an int. But i'm not sure how i would achieve what i want using a ChangeListener any other way. I need some help to meet the requirements in the first paragraph.

I've already tried searching for this, and found this question very helpful already. (My setup is heavily based off this question) But I think my requirements are slighty more complex.

Here is the code for the AddUnitPane class of my program (i've tried to comment it the best i can):