I am learning Java I have encountered these two very strange classes. Normally a class let say class JFrame will have its object created as such

JFrame app = new JFrame();

Now look at the object of class String it is declared as

private String name;

I mean this is like declaring a primitive type variable, why so?

Now look at the object of class System it’s written as

System.out

I mean this is like a static variable. I would like to know more what is going on with these two classes? Why so unique?