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Thread: question on inheritance

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    Default question on inheritance

    Hello every one,
    I'm new to java ; The following is my doubt
    I have a base abstract class(this cannot be instantiated) which is inherited by 2 classes.
    they are asking to create an class which may contain the child classes.
    eg : name of the base class is postalobject. this is inherited by a class letter and another class parcel.
    therz is another class of length 4 may contain 2 lettres and 2 parcels or 1 lettre and 3 parcels ?
    is it possibel to do it ????????????
    Advance thanks


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    Default Re: question on inheritance

    Quote Originally Posted by antoni View Post
    therz is another class of length 4
    Classes do not have a length. Please explain what you mean.
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    Default Re: question on inheritance

    A collection of PostalObjects, perhaps ArrayList<PostalObject>, could contain a combination of Letter and Parcel objects as long as they both extend PostalObject as you indicated they do.

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    Default Re: question on inheritance

    Quote Originally Posted by Junky View Post
    Classes do not have a length. Please explain what you mean.
    the maximum capcity of an array of objects.
    eg
    BoiteALettres[] BoiteALettresListe= new BoiteALettres[4];

    BoiteALettresListe.length =4

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    Default Re: question on inheritance

    What happened when you tried that code?
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