data strcture using JAVA

i need the codes for all the following functions

Requested work : 1. Define a function newList to create a new empty linked list.

2. Define a function sizeList to return the size of a given linked list

3. Define a function displayList to display the content of all nodes of a given linked list.

4. Define a function addNodeHead to add a new node on the head of a given linked list.

5. Define a function addNodeQueue to add a node on the queue of a given linked list.

6. Define a function delNodeHead to delete a node from the head of a given linked list.

7. Define a function delNodeQueue to add a node from the queue of a given linked list.

8. Define a function insertNodePos to add a new node on the given position of a given linked list.

9. Define a function delNodePos delete a node from a given position of a given linked list.

10. Test all previously defined functions in the main method.