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Thread: What is an object's identity?

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    Default What is an object's identity?

    I am not sure if an object's identity is it's location in the internal memory or a reference value that points towards its state.
    Could someone please explain what it actually is?


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    Default Re: What is an object's identity?

    Where did you hear that term? I've not heard it.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: What is an object's identity?

    Quote Originally Posted by Norm View Post
    Where did you hear that term? I've not heard it.
    It is from a book called murach's Java Programming.

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    Default Re: What is an object's identity?

    How did the author define the term?
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: What is an object's identity?

    Conceptual ideas such as objects and state/behavior are denoted to refer to a class files behavior or methods. Such as a person is a noun and is considered an Object in Java. In other terms it is a noun. In Java, these nouns have conceptual ideas called class files. Its components or behaviors are termed what is their attributes are. I think the term identity may be used interchangeably with a person(real life) and such as here, a conceptual Object or idea.

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    Default Re: What is an object's identity?

    Quote Originally Posted by Norm View Post
    How did the author define the term?
    "All object variables are reference types, which mean they don't actually contain the data like primitive data types do. Instead, they point to the data, which is another an other area of internal storage"
    "An object's identity is its address in internal memory, which is always unique."

    These 2 description were in separate chapters. Could the identity be a reference value to another reference value or what?

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    Default Re: What is an object's identity?

    "An object's identity is its address in internal memory, which is always unique."
    That looks like the author's definition.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: What is an object's identity?

    Quote Originally Posted by Norm View Post
    "An object's identity is its address in internal memory, which is always unique."
    That looks like the author's definition.
    So would you agree that an object's identity is it's reference value to the reference value to its state or value such as a String's text?

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    Default Re: What is an object's identity?

    I have no idea what you are trying to say.
    The author said:
    "An object's identity is its address in internal memory"

    Everything in a computer is located at some address. The above seems to say that the author defines the address as the "identity".
    If you don't understand my answer, don't ignore it, ask a question.

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