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Thread: Do I HAVE to learn Generics?

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    Member hexwind's Avatar
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    Default Do I HAVE to learn Generics?

    Hello everyone,
    I hope i'm asking in the right part of the forum.
    I just started learning about Generics but i just got bored of it and the rest of chapters in the book seem more interesting (more about Collection Framework, I/O Stream, Concurrency programming and GUI !! )
    Do you guys think that it's okay to skip this chapter and then go back to it later on or Generics is something I HAVE to know in order to write a Java program?
    Thanks!
    My website : MediDev


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    Default Re: Do I HAVE to learn Generics?

    Quote Originally Posted by hexwind View Post
    Do you guys think that it's okay to skip this chapter and then go back to it later on or Generics is something I HAVE to know in order to write a Java program?
    Thanks!
    I think you could skip the rest of chapters if their examples do not use generics, otherwise you should have a basic understand about generics before moving on. Only read the basics of generics, do not read everything, then you will go back to learn more later.

    immutable objects
    Last edited by ha.minh.nam; December 4th, 2011 at 06:28 PM.

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    Super Moderator Norm's Avatar
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    Default Re: Do I HAVE to learn Generics?

    You need to have a basic understanding of how to use generics. The compiler will complain about unchecked methods being used if you don't use generics:
    warning: [unchecked] unchecked call to add(E) as a member of the raw type java.util.ArrayList
    Basically generics is a way have the compiler check that you are using the correct data types when putting objects into a collection and/or taking them out.

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    Member hexwind's Avatar
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    Default Re: Do I HAVE to learn Generics?

    I can get a quick view on generics without reading this chapter whihc is very detailed and continue to other chapters. Thanks a bunch guys
    My website : MediDev

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