@Override public String toString(){
  int len=sessionId.length;
  StringBuffer s=new StringBuffer(10 + 2 * len);
  s.append("{");
  for (int i=0; i < len; i++) {
    s.append(0x0ff & sessionId[i]);
    if (i != (len - 1))     s.append(", ");
  }
  s.append("}");
  return s.toString();
}

@ Override public String toString ( ) { int len = sessionId . length ; StringBuffer s = new StringBuffer ( 10 + 2 * len ) ; s . append ( "{" ) ; for ( int i = 0 ; i < len ; i ++ ) { s . append ( 0x0ff & sessionId [ i ] ) ; if ( i != ( len - 1 ) ) s . append ( ", " ) ; } s . append ( "}" ) ; return s . toString ( ) ; }
returns the id as a string
