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Thread: Strict Polymorphism

  1. March 6th, 2014, 03:25 AM #1
    dicdic
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    Default Strict Polymorphism

    hi everyone
    Can't find the answer on net.

    I just want to ask about a kind inheritance
    Let say I have an interface MachineCode.

    I also have different classes, Binary, Hex and Octal that implements MachineCode

    Question:
    How can I prevent java to create an Object like this:
    Binary bin = new Binary();
    Hex hex = new Hex();
    Octal octal = new Octal();
    those declaration above must be compile error,

    I want to create Objects of Binary, Hex, and Octal this way:
    MachineCode bin = new Binary();
    MachineCode hex = new Hex();
    MachineCode octal = new Octal();

    I sure that this is possible, but I don't know how.
    Sorry can't find answer on net, thank you
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  3. March 6th, 2014, 03:36 AM #2
    helloworld922
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    Default Re: Strict Polymorphism

    Simply put that's not possible.
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  4. March 6th, 2014, 03:49 AM #3
    dicdic
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    Default Re: Strict Polymorphism

    Quote Originally Posted by helloworld922 View Post
    Simply put that's not possible.
    ahahaha
    I think I knew it now.
    Last edited by dicdic; March 6th, 2014 at 03:56 AM.
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