Integer Array Missing Numbers

import java.util.Arrays;
import java.util.LinkedList;

public class Array {
	private static String result = "";

	public static void main(String[] args) {
		int[] arr = { 1, 4 };
		System.out.println(getMissingNumbers(arr));
	}

	public static String getMissingNumbers(int[] arr) {
		Arrays.sort(arr);
		int start = arr[0];
		int end = arr[arr.length - 1];

		LinkedList<Integer> l = new LinkedList<Integer>();
		for (int i = 0; i < end; i++)
			l.add(i);

		for (Integer integer : l) {
			if (integer > start)
				result += " " + integer;
		}
		return result;
	}
}