Java tutorial
import java.text.CharacterIterator; import java.text.StringCharacterIterator; public class Main { private static final String text = "this is a test"; public static void main(String[] args) { CharacterIterator it = new StringCharacterIterator(text); for (char ch = it.last(); ch != CharacterIterator.DONE; ch = it.previous()) { System.out.print(ch); } } }