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Type: Posts; User: Alex L

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    Re: Array with null (same for Arraylist)

    You're quite right. My solution was poor. I've re-read some principles and am starting again. Thanks for you help :)
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    Re: Array with null (same for Arraylist)

    Changed


    private String student;

    to


    private String student = "";
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    (Solved) Array with null (same for Arraylist)

    I'm having a problem with calling arrays from a class. I know I should should separate the user interface from the logic so that's what I've tried to do. If you know of a better way please mention...
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    Re: How to learn OOP

    Plus this thread was written a few months ago. The OP (me) has already found the solution ;)
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    Re: Sphere (Volume/Surface Area)

    Thank you, that works a treat :)
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    Re: Sphere (Volume/Surface Area)

    Thank you for pointing that out. I didn't notice it. By changing part of the code to this:


    private double volume() {
    volume = 1.33333333 * Math.PI * Math.pow(radius(), 3);
    return volume;
    ...
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    Sphere (Volume/Surface Area)

    A question (not homework, a question from a book, don't worry) asks me to create a program to work out the volume and surface area of a sphere.

    The surface area part works fine, it is the volume...
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    Re: How to learn OOP

    Thank you for your replies, I have started to go through the links and will give it another go. I'll keep you updated.
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    How to learn OOP

    Hi, I've left this a bit late really bit I go back to uni in 2 weeks. I got through the first year without really understanding OOP and just avoided the questions. I'm sure I will be stuck next year...
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