Java split list

Question

I have a assignment to create a linked list and split into two sublist and right now I have a error with my code. If any one can help me with my code, I can't figure out where needs to be change every since i change some it gave me more error.

public class UnorderedLinkedList<E extends Comparable<? super E>> extends LinkedList<T>
{
    public void splitMid(LinkedList<String> subList)
    {
        LinkedList<T> current;//the head pointer
        LinkedList<T> mid;//the mid point 

        //Node first = firstNode;
        //Node last = firstNode;

        //Node subListFirst;
        //Node subListLast;
        int i;

        if(head == null)
        {
            subList.head = null;
            subList.last = null;
            subList.count = 0;
        }
        else
        {
            //mid =
            head = null;
            current = head.next;
            i = 1;

            if(current != null)
                current = current.next;

            while(current != null)
            {
                mid = mid.next;
                current = current.next;
                i++;

                if(current != null)
                    current = current.next;
            }

             subList.head = head.next;
             subList.last = last;
             last = mid ;
             last.next = null;

             subList.count = count - i;
             count = i;
        }
    }
}

Error message

G:\LinkedList\src\LinkedList.java:184: error: cannot find symbol subList.count = 0;

symbol: variable count.

location: variable subList of type LinkedList.Node

where T,E are type-variables:

T extends Object declared in class LinkedList.

E extends Comparable declared in class LinkedList.UnorderedLinkedList

My main class:

public void main(String args[])
{
    LinkedList<Integer> myList = new LinkedList<Integer>();
    LinkedList<Integer> subList = new LinkedList<Integer>();

    myList.addLast(34);
    myList.addLast(65);
    myList.addLast(87);
    myList.addLast(29);
    myList.addLast(12);

    myList.splitMid( subList);
}

error message

G:\LinkedList\src\LinkedTest.java:31: error: cannot find symbol.

myList.splitMid(subList);

symbol: method splitMid(LinkedList)

location: variable myList of type LinkedList

whats ur meaing about "split into two sublist"???

zetsin
– zetsin

2012-10-19 01:24:23 +00:00
Commented Oct 19, 2012 at 1:24 — zetsin
– zetsin, Commented Oct 19, 2012 at 1:24

Jigar Joshi · Accepted Answer · 2012-10-18 02:26:11Z

1

About compilation error:

You are using instance of LinkedList to call the method that you have defined for class UnorderedLinkedList

answered Oct 18, 2012 at 2:26

Jigar Joshi

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Comments

zetsin · Accepted Answer · 2012-10-18 02:58:18Z

0

1.

G:\LinkedList\src\LinkedList.java:184: error: cannot find symbol subList.count = 0;

try to delete subList.count; its not necessary to assign value for count;

2.

G:\LinkedList\src\LinkedTest.java:31: error: cannot find symbol.

myList.splitMid(subList);

do this:

UnorderedLinkedList<Integer> myList = new UnorderedLinkedList<Integer>();

edited Oct 18, 2012 at 2:58

answered Oct 18, 2012 at 2:37

zetsin

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7 Comments

Paul Bellora Over a year ago

Note that myList will need to be typed as UnorderedLinkedList in order to call splitMid on it.

Paul Bellora Over a year ago

myList.splitMid(subList); won't compile because myList is statically typed as LinkedList, which doesn't declare splitMid. myList must be declared as UnorderedLinkedList.

Paul Bellora Over a year ago

Okay cool... subList.size() = 0 won't compile either, sorry.

zetsin Over a year ago

try to delete subList.count; its not necessary to assign value for count;

zetsin Over a year ago

try to delete subList.count; its not necessary to assign value for count;

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