Administrative List implement

Public class category list {


Node head = null;
Node tail = null;

Int length = 0;

Public void add (Object object ){
Node node = new Node (object, null );
If (head = null ){
Head = tail = node;
}

Tail. setNext (node );
Tail = node;
Length ++;
}

Public int length (){
Return length;
}

}

 

Public class Node {


Private Object data;
Private Node next;


Public Node (Object data, Node next ){
Super ();
This. data = data;
This. next = next;
}

Public Object getData (){
Return data;
}
Public void setData (Object data ){
This. data = data;
}
Public Node getNext (){
Return next;
}
Public void setNext (Node next ){
This. next = next;
}


}