arraylist removerange

[nooneinparticular314159]

Hello. I have an arraylist of entries. I would like to truncate that
list to the first n entries. It seems logical to use removeRange,
however removeRange is protected, so I don't seem to be able to. ie.
I'm trying to do:

ArrayList ReturnList;
ReturnList = GetSortedArrayList(ARatingComparator);

Integer ArrayListSize = ReturnList.size();

if (NumberOfEntriesToReturn > ArrayListSize) {
return ReturnList;
}

else{
ReturnList.removeRange(NumberOfEntriesToReturn,
ArrayListSize);
}

But I can't do this because removeRange is private. I'm not anxious
to have my entire class extend ArrayList. Is there a good way to get
removeRange to work?

Thanks!

 

[Mayeul]

(e-mail address removed) a écrit :

Hello. I have an arraylist of entries. I would like to truncate that
list to the first n entries. It seems logical to use removeRange,
however removeRange is protected, so I don't seem to be able to. ie.
I'm trying to do:

ArrayList ReturnList;
ReturnList = GetSortedArrayList(ARatingComparator);

Integer ArrayListSize = ReturnList.size();

if (NumberOfEntriesToReturn > ArrayListSize) {
return ReturnList;
}

else{
ReturnList.removeRange(NumberOfEntriesToReturn,
ArrayListSize);
}

But I can't do this because removeRange is private. I'm not anxious
to have my entire class extend ArrayList. Is there a good way to get
removeRange to work?

Thanks!

I think you're supposed to do

returnList.subList(numberOfEntriesToReturn, returnList.size()).clear();

The javadoc on List.subList() should confirm this.

 

[Daniel Pitts]

Hello. I have an arraylist of entries. I would like to truncate that
list to the first n entries. It seems logical to use removeRange,
however removeRange is protected, so I don't seem to be able to. ie.
I'm trying to do:

ArrayList ReturnList;
ReturnList = GetSortedArrayList(ARatingComparator);

Integer ArrayListSize = ReturnList.size();

if (NumberOfEntriesToReturn > ArrayListSize) {
return ReturnList;
}

else{
ReturnList.removeRange(NumberOfEntriesToReturn,
ArrayListSize);
}

But I can't do this because removeRange is private. I'm not anxious
to have my entire class extend ArrayList. Is there a good way to get
removeRange to work?

Thanks!

ReturnList.subList(NumberOfEntriesToReturn, ArrayListSize).clear();

PS. only Classes and CONSTANTS should start with UpperCase, variables,
methods, and fields should be lowerCase.