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Groups > comp.lang.java.programmer > #38244

Re: package statement in standalone Java class

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On 4/9/2018 6:01 PM, Arne Vajhøj wrote:
> On 4/9/2018 7:57 AM, Eric Douglas wrote:
>> On Saturday, April 7, 2018 at 4:33:08 PM UTC-4, Arne Vajhøj wrote:
>>>>> Strictly speaking you can use any external class without imports - you
>>>>> just need to use the full name to refer to it.
>>>>>
>>>>> It looks awfully but it works.
>>>>>
>>>> I never do that because, as you say, it looks awful.
>>>> Consequently,  I tend to forget its possible.
>>>
>>> I also never do it.
>>>
>>> Maybe nobody besides Stefan does it.
>>
>> I do that where necessary of course.  I have had a case or two where
>> I had to reference the same external class name from multiple
>> packages in one of my classes.
> 
> It can be used to work around name conflicts.
> 
> But if avoiding wildcard imports, then that should be a relative
> rare occasion.
> 
> Anyway the above sentiments are missing an UNLESS clause.

BTW C# has a different rather cute way of handling that.

Example:

using System;

namespace A
{
     public class C
     {
         public override string ToString() { return "I am a A.C"; }
     }
}

namespace B
{
     public class C
     {
         public override string ToString() { return "I am a B.C"; }
     }
}

namespace Apr1
{
     using AC = A.C;
     using BC = B.C;
     public class Program
     {
         public static void Main(string[] args)
         {
             Console.WriteLine(new AC());
             Console.WriteLine(new BC());
         }
     }
}

Arne

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Thread

package statement in standalone Java class "Morten W. Petersen" <morphex@gmail.com> - 2018-04-07 04:38 -0700
  Re: package statement in standalone Java class Eric Sosman <esosman@comcast-dot-net.invalid> - 2018-04-07 10:25 -0400
    Re: package statement in standalone Java class "Morten W. Petersen" <morphex@gmail.com> - 2018-04-07 08:25 -0700
      Re: package statement in standalone Java class Martin Gregorie <martin@mydomain.invalid> - 2018-04-07 18:23 +0000
        Re: package statement in standalone Java class Arne Vajhøj <arne@vajhoej.dk> - 2018-04-07 15:58 -0400
          Re: package statement in standalone Java class Martin Gregorie <martin@mydomain.invalid> - 2018-04-07 20:28 +0000
            Re: package statement in standalone Java class Arne Vajhøj <arne@vajhoej.dk> - 2018-04-07 16:32 -0400
              Re: package statement in standalone Java class Martin Gregorie <martin@mydomain.invalid> - 2018-04-07 21:35 +0000
              Re: package statement in standalone Java class Eric Douglas <e.d.programmer@gmail.com> - 2018-04-09 04:57 -0700
                Re: package statement in standalone Java class Arne Vajhøj <arne@vajhoej.dk> - 2018-04-09 18:01 -0400
                Re: package statement in standalone Java class Arne Vajhøj <arne@vajhoej.dk> - 2018-04-09 18:07 -0400
                Re: package statement in standalone Java class Arne Vajhøj <arne@vajhoej.dk> - 2018-04-09 19:34 -0400
                Re: package statement in standalone Java class "Morten W. Petersen" <morphex@gmail.com> - 2018-04-10 16:28 -0700
        Re: package statement in standalone Java class "Morten W. Petersen" <morphex@gmail.com> - 2018-04-07 16:14 -0700

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