for

• Used to loop over a range of values from beginning to end.

      for (init-expr; boolean-expr; incr-expr)
         statement
  

• Typically used to iterate a variable over a range of values.

      char ch[] = new char[s.length()];
      for (int i=0; i<s.length(); i++)
      {
         ch[i] = s.charAt(i);
      }