Get super class field value - Completly stuck -.-

[Addez]

Hi!

Im creating a building ground for experimenting with building a AI brain :)
It's quite intressting, but I got some problems.

To be easily mod newly made classes, I want a property window. So when I click a class (in my graphics screen) then it should list all values of the class and its superclass.

For example, I got the class:

class dot extends point{
int width = 0;
}

class point{
int height = 10;
}

So I want to create a jlabel called width, and a jtextfield next to it which has the value "0".
Then a jlabel with the text height and jtextfield with value "10".

Problem is, I have no clue what the error message meens!

java.lang.IllegalAccessException: Class main.PropertiesWindow can not access a member of class xcomp.XComponent with modifiers ""

So far Im just trying to list the superclass fields, because the class itself has no value thats important.

Field[] fields2 = object.getClass().getSuperclass().getDeclaredFields();
			for(Field f : fields2){
				
				Class c = f.getType();
				
				if (c.equals(String.class) ||  c.equals(Integer.class) || c.equals(int.class)){
					String name = f.toString();
					String[] parts = name.split(" ");
					String part = parts[parts.length - 1];
					
					window_2.add(new JLabel(part));
					
					if (!name.startsWith("private")){
						System.out.println("Name: "+name);
						
						Object value = f.get((object.getClass().getSuperclass().cast(object)));
						window_2.add(new JTextField(value.toString()));
					} else {
						window_2.add(new JLabel("PRIVATE"));
					}
				} 
			}

The error is at this line:

Object value = f.get((object.getClass().getSuperclass().cast(object)));

I'v tried using without the cast:

Object value = f.get(object);

But gives same error.

So what does this error meens, and how can I fix it?

[Addez]

Apparently it meens, "I cant access it because its default. It should be public or protected for me to work.".
Cryptic language..

[Tolls]

Not really cryptic if you know reflection.
Fields have modifiers...private/public/protected/final etc are modifiers...yours has no modifier, hence "".