Quick Java Question..

[SnoopCat]

Are templates legal in Java?
For example:

private List<Book> bookList;


I have seen this done in C/C++ but not in Java. (im more of a c/c++ than Java person)

Im having a tough time trying to get my compiler to accept it.

any comments?

 

[ArmchairAthlete]

In java 1.5 yes. Earlier, no.

 

[SaturnX]

Yeah it's a very recent addition to Java, so unless you're compiling with the 1.5 compiler, it won't accept it.

--Mark

 

[KingNothing]

Can someone explain to me what the point of templates in Java are? Since everything inherits from Object anyway, why template a list? Is it only to enforce the type?

 

[ArmchairAthlete]

Originally posted by: KingNothing
Can someone explain to me what the point of templates in Java are? Since everything inherits from Object anyway, why template a list? Is it only to enforce the type?

When you get something out of the list, it's always a reference of the type you specified inside the <>.

Also handy for the new for each loop like:

ArrayList<Building> stuff = new ArrayList<Building>();
// put stuff in it
for(Building b : stuff)
{
System.out.println(b.getCost());
}

 

[MisterJackson]

I read this as "Qwick Jawa question.".

Curse you and your non Star Wars thread.

 

[daniel49]

Originally posted by: MisterJackson
I read this as "Qwick Jawa question.".

Curse you and your non Star Wars thread.

lol, funny guy give him a cookie