Accessing the platform - JavaTech: An Introduction to Scientific and Technical Computing with Java - page 645

PrintStream fPortOutStream;
// This array and streams are used to convert a stream
// of bytes to primitive type values.
byte[] fByteArray;
ByteArrayInputStream fByteIn;
DataInputStream fDataIn;
// Values are returned as text to the fParent that
// implements the Outputable interface.
Outputable fParent;
// Use for text from device.
StringBuffer fStrBuf = new StringBuffer ();
// Data taking parameters
// flag for the data taking thread
boolean fTakeData = false;
int fPauseTime = 1000;
// Data description and info
String fDataDescription =" Temperature " ;
double fSlope = 0.5;
double fOffset = 0.0;
String fDataUnit ="C";
/**
* Constructor
* @param fParent implements the Outputable interface
* for print output.
* @param rate is the data taking rate in number of
* values per second.
*/
public GetJavelinData (Outputable parent, int rate) {
fParent = parent;
fPauseTime = 1000/rate; // Pause time in milliseconds
// Set up the byte array and streams for converting
// bytes to an int primitive value.
fByteArray = new byte[4];
fByteIn = new ByteArrayInputStream (fByteArray);
fDataIn = new DataInputStream (fByteIn);
} // ctor
/** Obtain streams for the serial lines. **/