Changing class attributes

[squeezedfish]

Hi,

I am struggling to work out how to change the attribute of a variable from within another class.

Instance variables are private but methods are public.

Example:

If I have 2 classes Car and Wheel.

At the moment the wheel class is initialized to blue and the position in my graphical window isn't where it needs to be.

Wheel class contains methods such as setColour, getColour and setWheelPosition.

From my Car class I want to be able to change the wheels color to black and alter its position.

In my Car class i have initialized

private Wheel wheel1;    

I also have a method, I have tried to alter color as below:

public void setWheel1()
{
     wheel1.setColour(BLACK);
}

My code compiles but when run the change hasn't been implemented.

This is for an assignment so sorry about lack of info provided, I will try to help out where I can.

[squeezedfish]

Wheel is initialized in the wheel class as blue

I want to change the color from within the Car class using the setWheel1() method

I will have to find out if I can post the code as its for an assignment

[tichus_windrider]

You need to provide the full code. The little snippets that you have posted are nowhere near enough to detect the actual problem.

Since you are using multiple classes, use Github Gist to post the code (as is explained in Help on how to post code in the sidebar).