I was looking for same thing - a helloworld for InterfaceKitPhidget. Didn't find it, but based on these examples..

Phidget RFID Reader + Processing: http://thegeekmovement.com/blog/?p=42#more-42

Phidgets accelerometer with processing: http://www.interactiondesign.se/blog/2008/11/phidgets-accelerometer-with-processing/

..I was was able to modify Phidgets' java example, OpenIFKitExample.java and got to work in Processing:  



import com.phidgets.*;
import com.phidgets.event.*;

InterfaceKitPhidget ik;


void setupIKP() {
 try {
   println( Phidget.getLibraryVersion() );
   ik = new InterfaceKitPhidget();

   ik.addAttachListener(new AttachListener() {
     public void attached(AttachEvent ae) {
       println("attachment of " + ae);
     }
   });
   ik.addDetachListener(new DetachListener() {
     public void detached(DetachEvent de) {
       println("detachment of " + de);
     }
   });
   ik.addErrorListener(new ErrorListener() {
     public void error(ErrorEvent ee) {
       println("error event for " + ee);
     }
   });
   ik.addInputChangeListener(new InputChangeListener() {
     public void inputChanged(InputChangeEvent ie) {
       println("input event for " + ie);
     }
   });
   ik.addOutputChangeListener(new OutputChangeListener() {
     public void outputChanged(OutputChangeEvent oe) {
       println("output event for " + oe);
     }
   });
   ik.addSensorChangeListener(new SensorChangeListener() {
     public void sensorChanged(SensorChangeEvent se) {
       println("sensor event for " + se);
     }
   });

   ik.openAny();
   println("waiting for InterfaceKit attachment...");
   ik.waitForAttachment();

   println(ik.getDeviceName());

   delay(500); //Thread.sleep(500);

   if (false) { //retry init
     print("closing...");
     System.out.flush();
     ik.close();
     println(" ok");
     print("reopening...");
     ik.openAny();
     println(" ok");
     ik.waitForAttachment();
   }

   if (ik.getInputCount() > 8) {
     println("input(7,8) = (" +
       ik.getInputState(7) + "," +
       ik.getInputState(8) + ")");
   }

   if (false) {
     print("turn on outputs (slowly)...");
     for (int i = 0; i < ik.getOutputCount() ; i++) {
       ik.setOutputState(i, true);
       try {
         delay(1000); //Thread.sleep(1000);
       } catch (Exception e) {
       }
     }
     println(" ok");
   }

   if (false) {
     for (;;) {
       try {
         delay(1000); //Thread.sleep(1000);
       } catch (Exception e) {
       }
     }
   }

   for (int j = 0; j < 1000 ; j++) {
     for (int i = 0; i < ik.getOutputCount(); i++) {
       ik.setOutputState(i, true);
     }
     for (int i = 0; i < ik.getOutputCount(); i++) {
       ik.setOutputState(i, false);
     }
   }

   if (false) {
     println("toggling outputs like crazy");
     boolean o[] = new boolean[ik.getOutputCount()];
     for (int i = 0; i < ik.getOutputCount(); i++) {
       o[i] = ik.getOutputState(i);
     }
     for (int i = 0; i < 100000; i++) {
       int n = (int)(Math.random() * ik.getOutputCount());
       ik.setOutputState(n, !o[n]);
       println("setOutputState " + n +
         ": " + !o[n]);
       o[n] = !o[n];
       try {
         delay(1); //Thread.sleep(1);
       } catch (Exception e) {
       }
     }
   }

   //println("Outputting events.  Input to stop.");
   //System.in.read();

 } catch (PhidgetException ex) {
   println(ex);
 }
}


void closeIKP(){
 try {
   print("closing...");
   ik.close();
   ik = null;
   println(" ok");
   if (false) {
     println("wait for finalization...");
     System.gc();
   }
 } catch (PhidgetException ex) {
   println(ex);
 }
}


void setup() {
 size(400,100);
 setupIKP();
}


void draw() {
 //background(200);
}


//Should add a button or some other trigger to call closeIKP();