test_char_array.java

public class test_char_array
{
   public static void main(/*String[] argv*/)
   {
      String s = "abc";
      char [] str = s.toCharArray();
      char c = str[2];
      char a = s.charAt(0);
      assert(str.length == 3);
      assert(a == 'a');
      assert(c == 'c');
   }
}