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Thread: Very simple problem...PLEASE HELP!

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    Default Very simple problem...PLEASE HELP!

    Consider the following code which is supposed to add a value passed to the method to an instance variable; however, there is a problem. Re-write this code, without renaming any variable names, to resolve the problem.

    private int number = 123;
    public void addNumbers (int number)
    {
    number = number + number;
    System.out.println("The local variable is: " + number);
    System.out.println("The instance variable is: " + number);
    }
    I have no idea where to even start... any ideas?


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    Administrator copeg's Avatar
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    Default Re: Very simple problem...PLEASE HELP!


    I have no idea where to even start... any ideas?
    Yes, write a runnable piece of code and test it...check the output, what you expect and what you get. Then fix it (hint: two variables have identical names - you must differentiate between the two).

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    Default Re: Very simple problem...PLEASE HELP!

    I came with moving the print statement to the front so I have this:

    private int number = 123;
    public void addNumbers (int number)
    {
    System.out.println("The local variable is: " + number);
    number = number + number;
    System.out.println("The instance variable is: " + number);
    }
    Which takes care of the local variable. My problem is finding a way to differentiate between the two number variables, do you have any advice?

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    Administrator copeg's Avatar
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    Default Re: Very simple problem...PLEASE HELP!

    Read through the Oracle tutorials, the answer is in this link (and yes, there is a clue in this post)

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    Default Re: Very simple problem...PLEASE HELP!

    Quote Originally Posted by copeg View Post
    Read through the Oracle tutorials, the answer is in this link (and yes, there is a clue in this post)
    this will help you.
    Please use [highlight=Java] code [/highlight] tags when posting your code.
    Forum Tip: Add to peoples reputation by clicking the button on their useful posts.

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