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Thread: whats wrong with code, please help me understand thanks

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    Default whats wrong with code, please help me understand thanks

    public class Rectangle {

    public Rectangle(int width, int height) {
    Rectangle x = new Rectangle(7, 9);
    double d = x.getDiagonal();
    System.out.println(d);



    }

    }


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: whats wrong with code, please help me understand thanks

    Please explain why you think there is something wrong.
    If you get error messages, copy the full text and paste it here.
    If wrong output, post the output and explain what is wrong with the output.

    Please edit your post and wrap your code with code tags:
    [code=java]
    <YOUR CODE HERE>
    [/code]
    to get highlighting and preserve formatting.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: whats wrong with code, please help me understand thanks

    it says the method getDiagonal is undefined for the type Rectangle

    --- Update ---

    it says the mehod getDiagonal() is undefined for the type Rectangle

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    Super Moderator Norm's Avatar
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    Default Re: whats wrong with code, please help me understand thanks

    Did you look in the API doc for the class Rectangle? Does it have a getDiagonal() method defined?

    See the API doc: Java Platform SE 7
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: whats wrong with code, please help me understand thanks

    it is in java.lang.object

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    Default Re: whats wrong with code, please help me understand thanks

    it is in java.lang.object
    What is that? A package or a class? Where are you seeing that in the documentation?

    Note: Java class names start with Uppercase letters. The correct spelling for the Object class starts with a capital O
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: whats wrong with code, please help me understand thanks

    Quote Originally Posted by Norm View Post
    What is that? A package or a class? Where are you seeing that in the documentation?

    Note: Java class names start with Uppercase letters. The correct spelling for the Object class starts with a capital O
    stop asking silly question s and help me if u can,....if you can't then leave the page

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    Default Re: whats wrong with code, please help me understand thanks

    method getDiagonal is undefined for the type Rectangle
    You need to read the API doc for the Rectangle class and see what methods it has.
    The compiler is not finding the method: getDiagonal

    You must use methods that are defined for the class, you can not use undefined methods.

    What do you want the code to do? The volunteers are here to help you write your code and get it to work.
    We do not write code for you. Figure out what you want to do, write the code to do it and if you have problems with it, copy the code here and post your questions about the problems you are having.
    Be sure to copy and paste the full text of any error messages.
    If you don't understand my answer, don't ignore it, ask a question.

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