Aips lab2 Spoj listi

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Iterator;
import java.util.NoSuchElementException;

class SLLNode<E> {
    protected E element;
    protected SLLNode<E> succ;

    public SLLNode(E elem, SLLNode<E> succ) {
        this.element = elem;
        this.succ = succ;
    }
    @Override
    public String toString() {
        return element.toString();
    }
}

class SLL<E extends Comparable<E>> {
    private SLLNode <E> first;

    public SLL() {
        this.first=null;
    }
    public SLLNode<E> getFirst() {
        return first;
    }
    public void insertLast(E ob) {
        if(first!=null) {
            SLLNode<E> temp=first;
            while(temp.succ != null) {
                temp=temp.succ;
            }
            SLLNode<E> ins =new SLLNode<E> (ob,null);
            temp.succ=ins;
        } else {
            SLLNode<E> ins = new SLLNode<E>(ob,first);
            first = ins;
        }

    }
    public void deleteDuplicate(SLL<E> list) {
        SLLNode<E> tmp=list.getFirst();
        while( tmp!=null && tmp.succ!=null) {
            if(tmp.element==tmp.succ.element) {
                tmp.succ=tmp.succ.succ;
            } else {
                tmp=tmp.succ;
            }
        }
    }

    public SLL<E> joinLists(SLL<E> list2) {
        SLL<E> rezultat = new SLL<E>();
        SLLNode<E> jazol1=this.getFirst();
        SLLNode<E> jazol2 = list2.getFirst();

        while(jazol1 !=null&&jazol2 != null) {
            if(jazol1.element.compareTo(jazol2.element)<0) {
                rezultat.insertLast(jazol1.element);
                jazol1=jazol1.succ;
            } else {
                rezultat.insertLast(jazol2.element);
                jazol2=jazol2.succ;
            }
        }
        if(jazol1 != null) {
            while(jazol1 != null) {
                rezultat.insertLast(jazol1.element);
                jazol1=jazol1.succ;
            }
        }

        if(jazol2 != null) {
            while(jazol2 != null) {
                rezultat.insertLast(jazol2.element);
                jazol2=jazol2.succ;
            }
        }
        return rezultat;
    }
    @Override
    public String toString() {
        String print = new String();
        if (first != null) {
            SLLNode<E> tmp = first;
            print += tmp + " ";
            while (tmp.succ != null) {
                if(tmp.succ == null){
                	tmp = tmp.succ;
                	print += tmp;
                }else{
                	tmp = tmp.succ;
                	print += tmp + " ";
                }

            }
        } else
            print = "Prazna lista!!!";
        return print;
    }

}



public class SLLJoinLists {

    public static void main(String[] args) throws IOException {
        SLL<Integer> lista1=new SLL<Integer>();
        SLL<Integer> lista2=new SLL<Integer>();

        BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
        String s = stdin.readLine();
        int N = Integer.parseInt(s);
        s = stdin.readLine();
        String[] pomniza = s.split(" ");
        for (int i = 0; i < N; i++) {
            lista1.insertLast(Integer.parseInt(pomniza[i]));
        }

        s = stdin.readLine();
        N = Integer.parseInt(s);
        s = stdin.readLine();
        pomniza = s.split(" ");
        for (int i = 0; i < N; i++) {
            lista2.insertLast(Integer.parseInt(pomniza[i]));
        }

        SLL<Integer> spoeni = lista1.joinLists(lista2);
        spoeni.deleteDuplicate(spoeni);
		System.out.println(spoeni);

        // spoeni = lista1.joinLists(lista2);
        /*Iterator<Integer> it = spoeni.iterator();
        while (it.hasNext()) {
        	System.out.print(it.next());
            if(it.hasNext())
                System.out.print(" ");
        }
        System.out.println();*/
    }
}