Will the internal state of a class change when new data is passed to it?

If a class is implemented such that passing new data to its methods or constructor changes the internal fields of the object, then the internal state of the class will change. For example, if the class has a SetData method that updates fields, then after calling this method, the state of the object will be different.

However, if the class is immutable, then passing new data creates a new object, and the existing one remains unchanged.

Example of state change:

class MyClass {
    private int data;
    public void SetData(int newData) {
        data = newData; // changing internal state
    }
}

Thus, the answer depends on the implementation of the class and its methods.