hi friends i am having the doubt in mind,I need to use linked list in my program can i import the linked list class before i use (or) shall i directly include in the code.It means...
import java.util.LinkedList;
class A
{
}
orclass A
{
java.util.LinkedList a=new java.util.LinkedList();
}
I want to knw which one is better...?and anyone tell me the reason...?Thanks in advance
> I want to knw which one is better...?
There's hardly any difference in the way they work.
> > I want to knw which one is better...?
>
> There's hardly any difference in the way they work.
Correction. There's NO difference.
> > > I want to knw which one is better...?
> >
> > There's hardly any difference in the way they
> work.
>
> Correction. There's NO difference.
I thought so. I was thinking of checking the bytecode to be sure.
> import java.util.LinkedList;
> class A
> {
> }
> orclass A
> {
> java.util.LinkedList a=new
> java.util.LinkedList();
The .class files generated for the two cases will be identical. Importing has NO effect at runtime. All it does is tell the compiler, "When I say List I mean java.util.List," which saves you some typing and keeps your code less cluttered. Either way, the compiler generates a fully-qualified reference to java.util.List in the class file.
> > > I want to knw which one is better...?
> >
> > There's hardly any difference in the way they
> work.
>
> Correction. There's NO difference.
Yes and no.
There is no difference in performance or anything but there is a difference in the source code.
> There is no difference in performance or anything but
> there is a difference in the source code.
Um, well, yeah, I guess I figured that was obvious. There's no difference in the .class files though.
> > There is no difference in performance or anything
> but
> > there is a difference in the source code.
>
> Um, well, yeah, I guess I figured that was obvious.
Well yes to you and me but we didn't ask the question. :)
Besides this becomes more of an issue if there are multiple List variables used throughout the class.
and if there are multiple classes called LinkedList, all of which are possible matches using imports, the first option will fail to compile.
