Package com.wolfram.jlink

Class PacketPrinter

  • All Implemented Interfaces:
    PacketListener, java.util.EventListener
    public class PacketPrinter
extends java.lang.Object
implements PacketListener
    PacketPrinter is an implementation of the PacketListener interface that prints the contents of incoming packets to a stream that you specify.

    PacketPrinter is useful for debugging, when you want to see exactly what Mathematica is sending you. Here is how you might use it: 

         // ml is a KernelLink
     PacketListener stdoutPrinter = new PacketPrinter(System.out);
     ml.addPacketListener(stdoutPrinter);
    After the execution of the above code, the contents of all packets that arrive during calls to the KernelLink methods waitForAnswer(), discardAnswer(), or any of the "evaluateTo" set will be printed to System.out. No matter how many PacketListeners are registered, their monitoring of incoming packets will never interfere with any other packet-handling code in your program, so you can turn on and off this full packet tracing by just adding or removing the two lines above. No other changes whatsoever are required to your program.
    See Also:
    PacketListener, PacketArrivedEvent, KernelLink

    • Constructor Summary

      Constructors 
      Constructor Description
      PacketPrinter()
      Prints packets to System.out.
      PacketPrinter​(java.io.PrintStream strm)  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean packetArrived​(PacketArrivedEvent evt)
      Invoked when a packet arrives on the link.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • PacketPrinter

        public PacketPrinter()
        Prints packets to System.out.

      • PacketPrinter

        public PacketPrinter​(java.io.PrintStream strm)
        Parameters:
        strm - the stream on which packets will be printed