Re: can't import class in default package???

From: Michael Amling (nospam_at_nospam.com)
Date: 12/12/03

  • Next message: Michael Amling: "Re: can't import class in default package???" 
    Date: Fri, 12 Dec 2003 02:32:20 GMT

    Dale King wrote:
    > "Michael Amling" <nospam@nospam.com> wrote in message
    > news:4l%Bb.11120$aw2.5670827@newssrv26.news.prodigy.com...
    >
    >>Jon Skeet wrote:
    >>
    >>>Kay <kangkang@interchange.ubc.ca> wrote:
    >>>
    >>>
    >>>>I have a java fiile that resides at the default package under src
    >
    > folder. In
    >
    >>>>the same project, when I want to import that class, I just need to type
    >>>>
    >>>>import ClassName
    >>>>
    >>>>right? However, eclipse cannot resolve it. But I can see the class in
    >
    > the
    >
    >>>>automatic code completion pop up list if I just type the first 1 or 2
    >
    > letter
    >
    >>>>of the ClassName.
    >>>>
    >>>>So what should I do to import such class?
    >>>
    >>>You should put the class into a package, instead. As of JDK1.4 the
    >>>above won't work with javac either.
    >>
    >> I noticed that. But I don't know who thought it would be a good idea.
    >
    > The creators of Java. Quoting from the JLS:
    >
    > "For small programs and casual development, a package can be unnamed or have
    > a simple name, but if code is to be widely distributed, unique package names
    > should be chosen. This can prevent the conflicts that would otherwise occur
    > if two development groups happened to pick the same package name and these
    > packages were later to be used in a single program."
    >
    > "Unnamed packages are provided by the Java platform principally for
    > convenience when developing small or temporary applications or when just
    > beginning development."
    >
    > The problem becomes complicated when you start thinking of multiple
    > hierarchies in the class path. For example, if I have a program in multiple
    > jar files and a class uses a class in a class in an unnamed package.Where
    > would it get it from? From the root of the jar file that class is in or from
    > the root of the jar file of the class from which the program started?
    > Conceptually, you could have multiple unnamed packages.

       That's all been true since 1.0.3.

    --Mike Amling

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