public static String toString(char[][] c){
  StringBuffer sb=new StringBuffer();
  for (int i=0, max=c.length; i < max; ++i) {
    if (i != 0)     sb.append('.');
    sb.append(c[i]);
  }
  return sb.toString();
}

public static String toString ( char [ ] [ ] c ) { StringBuffer sb = new StringBuffer ( ) ; for ( int i = 0 , max = c . length ; i < max ; ++ i ) { if ( i != 0 ) sb . append ( '.' ) ; sb . append ( c [ i ] ) ; } return sb . toString ( ) ; }
converts a char [ ] [ ] to string , where segments are separated by ' . ' .
