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Thread: Object Reference

  1. #1
    Think of me.... Mr.777's Avatar
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    Default Object Reference

    Greetings everyone!!!
    I am actually confused about a concept. So, i want you guys to actually help me out. Forexample,
    class_A obj1=new class_A();
    Suppose the above statement initializes all instances of class_A with 5, 6 and 7.
    Now,
    class_A obj2=new class_A();
    obj2=obj1;
    This is just a reference to the obj1. So, what if i want to assign all values of obj1 to obj2 but not as a reference, what should i do, other than using copy constructor.
    I am waiting for your suggestions.

    Regards...


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    Super Moderator helloworld922's Avatar
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    Default Re: Object Reference

    Unfortunately, for objects Java only allows using the = operator as assigning object references.

    You can either manually re-assign the values, or use a helper method to copy the values for you.

    If keeping the specific object originally referenced by obj2 is important, I would recommend not using a copy constructor or clone method as these typically imply that you get a new object which happen to have the same values as the original.

    In this case, your code might look something like this:

    obj2.copyFrom(obj1); // copyFrom copies all values from obj1 into obj2

  3. #3
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    Default Re: Object Reference

    Thanks for the reply.

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