Container

package container;

//import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;

import util.searchable.ISearchFilter;
import util.searchable.ISearchableByFilter;

public class Container<E> {

    public IContainerElement<E> head;


    //constructor
    public Container() {
        this.head=null;
    }


    public boolean add (E e) throws NullPointerException {
        if(e==null) {
            throw new NullPointerException("You cant enter null");
        }


        ContainerElement<E> node = new ContainerElement<E>(e);
        if(head==null) {
            head=node;
        }
        else {
            ContainerElement<E> n = (ContainerElement<E>) head;
            while(n.hasNextElement()) {
                n=(ContainerElement<E>) n.getNextElement();
            }
            n.next=node;
        }

        return true;
    }
    //probna funkcija
    public void show() {

        IContainerElement<E> node = head;
        while(node.hasNextElement()) {
            System.out.println(node.getData());
            node=node.getNextElement();
            }
        System.out.println(node.getData());
    }


    public boolean addAll(Collection<? extends E> c) {
        for(E e : c) {
            ContainerElement<E> node = new ContainerElement<E>(e);


        }


        return true;
    }


    public void clear() {
        ContainerElement<E> node = new ContainerElement<E>();


    }




}