Java tutorial
import java.text.CharacterIterator; import java.text.StringCharacterIterator; public class Main { public static void main(String[] args) { String text = "this is a test"; CharacterIterator it = new StringCharacterIterator(text, 4, 27, 5); for (char ch = it.first(); ch != CharacterIterator.DONE; ch = it.next()) { System.out.print(ch); } } }