Iterating using an array, because whatever school Nepherus goes to teaches NOTHING worthwhile, apparently

gistfile1.java

public class Iterate2 {
    public static void main(String[] args) {
        new Iterate2().run();
    }

    public void run() {
        long start = System.currentTimeMillis();
        InputStream in = this.getClass().getResourceAsStream("/numbers.txt");
        BufferedInputStream bis = new BufferedInputStream(in);
        Scanner scanner = new Scanner(bis);
        int counter = 0;
        boolean[] bits = new boolean[1100000];
        while (scanner.hasNext()) {
            int i = scanner.nextInt();
            bits[i] = true;
            counter++;
        }
        for (int i = 1000000; i < 1100000; i++) {
            if (bits[i]) {
                System.out.println(i);
            }
        }
        long end = System.currentTimeMillis();
        System.out.printf("%d entries processed in %d ms%n", counter, end - start);
    }
}