How to access an element of a linked list inside another linked list?

[smtwtfs]

I am trying to read a few sentences, then segment them into smaller units (phrases). So I am using a Linked list for all the sentences, each element of this linked list is another linked list contains the phrases. I am done with adding the elements, but having trouble of accessing them.

here's my code

		LinkedList outerlist = new LinkedList();
			
		tempSent= in.readLine(); // initialized BufferReader
			
		while(i < numSent){
			StringTokenizer tok = new StringTokenizer(tempSent, " "); 
			LinkedList templist = new LinkedList();
			while (tok.hasMoreTokens()){
				templist.add(tok.nextToken());
			}
			outerlist.add(templist);
			temp = in.readLine();
			i ++;
		}

		// this works fine it prints the whole list
		System.out.println(outerlist);

		// this works fine too it prints the second linked list
		System.out.println(outerlist.get(2));

but how can I get the second element of second linked list? for example

outerlist.get(2).get(2) // I know this does not work but that's what i need

.

any help would be truly appreciated!

[liyuyu_852000]

the get(int index) method's return type is Object,so maybe you must cast it to the type of LinkedList like this:

((LinkedList)(outlist.get(2))).get(2)

[Junky]

Or better yet use Generics.

LinkedList<LinkedList<String>> outerlist = new LinkedList<LinkedList<String>>();

[smtwtfs]

Thank you guys they worked well!

(linked list is slow though thats what i heard...might use something else in the end)

[JosAH]

Thank you guys they worked well!

(linked list is slow though thats what i heard...might use something else in the end)

There's nothing intrinsically slow about linked lists; they hop from node to node when you iterate over them Finding the i-th element can be slow for long lists. If they are too slow for you you might consider using ArrayLists instead with a large enough initial capacity. (read the API documentation for that class for details).

kind regards,

Jos