public String toString(){
  int val;
  StringBuffer sb=new StringBuffer();
  for (int i=0; i < _nDataBytes; i++) {
    if (i > 0) {
      sb.append(' ');
    }
    val=_dataBytes[i] & 0xFF;
    sb.append(hexChars[val >> 4]);
    sb.append(hexChars[val & 0x0F]);
  }
  return sb.toString();
}

public String toString ( ) { int val ; StringBuffer sb = new StringBuffer ( ) ; for ( int i = 0 ; i < _nDataBytes ; i ++ ) { if ( i > 0 ) { sb . append ( ' ' ) ; } val = _dataBytes [ i ] & 0xFF ; sb . append ( hexChars [ val > > 4 ] ) ; sb . append ( hexChars [ val & 0x0F ] ) ; } return sb . toString ( ) ; }
get a string representation of the entire message in hex
