Create duplicates through recursion

Runner2.java

//Helping out a friend with a quick hack to make duplicates recursively (made in 2 mins)

import java.util.LinkedList;


public class Runner2 {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		LinkedList l = new LinkedList<String>();
		l.add("A");
		l.add("B");
		l.add("A");
		l.add("B");
		
		makeDuplicates("B", l, 0);
		
		System.out.print(l);
	}

	private static LinkedList<String> makeDuplicates(String target, LinkedList<String> l, int start) {
		if(l.get(start).equals(target) && start != l.size() - 1){
			l.add(start + 1, target);
			makeDuplicates(target, l, start + 2);
		}
		else if(l.get(start).equals(target) && start == l.size() - 1){
			l.add(start + 1, target);
			return l;
		}
		else if(!l.get(start).equals(target) && start != l.size() - 1)
			return makeDuplicates(target, l, start + 1);
		else
			return l;
		
		return l;
	}

}