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Thread: All help would be much appreciated!!

  1. #1
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    Exclamation All help would be much appreciated!!

    Hi,

    In the box below is what I have to do. I'm having errors in my code and can't figure out what is wrong. If anyone can help that'd be great.
    Last edited by Rkelly155; April 10th, 2012 at 10:05 PM.


  2. #2
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    Default Re: All help would be much appreciated!!

    I'm having errors in my code and can't figure out what is wrong.
    Please explain. If you are getting error messages, please copy the full text and paste here.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: All help would be much appreciated!!

    4 errors found:
    [line: 57]
    Error: char cannot be dereferenced
    File: [line: 71]
    Error: char cannot be dereferenced
    File: [line: 84]
    Error: char cannot be dereferenced
    [line: 98]
    Error: MyString.java:98: incompatible types
    found : java.lang.String
    required: MyString
    Last edited by Rkelly155; April 10th, 2012 at 10:06 PM.

  4. #4
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    Default Re: All help would be much appreciated!!

    Can you copy the full text of the compiler's error messages? I would expect them to look like this:
    TestSorts.java:138: cannot find symbol
    symbol  : variable var
    location: class TestSorts
             var = 2;
             ^
    Notice that the error message includes the source line and a ^ beneath where the error is.

    For this error:
    char cannot be dereferenced
    You can't call a method using a char variable. For example: 'a'.aMethod() is not valid
    "a".length() is valid because "a" is a String object

    What statement is line 98?
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: All help would be much appreciated!!

    I still don't understand. I need to call string[i] because it's the array that I need to use.

    and line 98 is
    Last edited by Rkelly155; April 10th, 2012 at 10:05 PM.

  6. #6
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    Default Re: All help would be much appreciated!!

    You posted 8 lines. Which one is line 98?

    The method is defined to return a MyString object. Is that what you want it to do?
    Where is there a MyString object that can be returned?
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: All help would be much appreciated!!

    The MyString object that gets returned is what I have to create in the tester class I think. I have to create a class with these methods than make a tester class that will use these methods on a string that I will give in a constructor. Hopefully that made sense.

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    Default Re: All help would be much appreciated!!

    To create a MyString object you need to use the new statement:
    MyString myStr = new MyString(<SOME ARGS HERE?>);
    then at the end of the method:
    return myStr;
    If you don't understand my answer, don't ignore it, ask a question.

  9. #9
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    Default Re: All help would be much appreciated!!

    I'm just struggling with the methods that need to be created. Is there anyway, based off of my code, that you can see I did something wrong? Or how would you code the methods?

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    Default Re: All help would be much appreciated!!

    Please define what the method is supposed to do. What arguments does it receive, what processing does it do and what does it return?
    If there is more than one method, do the above steps for each method.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: All help would be much appreciated!!

    I have included the methods i need to create in the class all the way above in the box above my code that I have so far.

  12. #12
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    Default Re: All help would be much appreciated!!

    If you have definitions of what the methods should do, then you need to design the code for each one before you code it.
    Pick one, design it, code it, compile it test it. When it works, move on to the next one.
    Last edited by Norm; April 10th, 2012 at 09:50 PM.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: All help would be much appreciated!!

    Cross posted at: MyString Help
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    Default Re: All help would be much appreciated!!

    rewrite your code then write your error...

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