Use CharacterIterator to loop through a string : CharacterIterator « I18N « Java Tutorial

1. Java Tutorial
2. I18N
3. CharacterIterator

import java.text.CharacterIterator;
import java.text.StringCharacterIterator;

public class Main {
  public static void main(String[] argv) throws Exception {
    CharacterIterator it = new StringCharacterIterator("abcd");

    char ch = it.first(); 
    ch = it.current(); 
    ch = it.next(); 
    ch = it.current(); 
    ch = it.last(); 
    int pos = it.getIndex(); 
    ch = it.next(); 
    pos = it.getIndex(); 
    ch = it.previous(); 
    ch = it.setIndex(1);
  }
}