At 08:38 AM 6/28/2002 +0200, Radim Tlusty wrote:
>> At 03:20 PM 6/27/2002 +0200, Radim Tlusty wrote:
>> >But the following description is misleading:
>> >There is no relation between imports and storage of class files.
>>
>> ??? I'm not sure how your inference engine works.
>> Who said there was a relationship?
>
>YOU.
????? I said "it used to be overhead in the old days..."
Compilation took longer when your class path only has
class files because there was a directory lookup involved.
Jar files eliminated that issue a while ago.
>You said, that there was overhead in "old days" before JAR files and today
>with JAR files with manifest there should not be difference between "import
>java.util.*" and "import java.util.Vector".
>This for me means, that you see
>relation between storage of classes and "import style" in source code. But
>this is misleading.
"see relation"??? "import style"??? I have no idea
what you are saying. Please explain.
>There is of course difference in speed with classes stored in JAR files or
>standalone, but in loading time of class and not because of imports, as you
>said (cite from your statement: "imports used to cause directory lookups,
>which were slow").
There *WAS* a difference (between import foo.* and import foo.MyClass)
in compiling Java classes in the pre-jar days. It *USED* to take
longer to compile Java classes when we only had *class* files and
did not have *jar* files. This difference was due to the directory
lookup and was particularly noticeable with large numbers of class files.
If you want further clarification, send me direct email.
Frank G.
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