SWIGJAVA: Remove the last JAVA ifdefs from src

Removed all references to #ifdef SWIGJAVA and JAVACALLBACK from the
library source.  All java-specific source code has been moved to the
corresponding library's .i file for java.

    * Update library source
    * Update examples where necessary
    * The function pointer methodology has been remove from libraries
      which provided callbacks as both a class and a function pointer
      implementation.  Examples were updated to use the class version
      of callbacks.
    * Updated documentation for SWIGJAVA

Signed-off-by: Noel Eck <noel.eck@intel.com>

examples/c++/nrf24l01-receiver.cxx

@@ -46,22 +46,33 @@ sig_handler(int signo)
 }
 
 //! [Interesting]
-void
-nrf_handler()
+class mycb : public virtual Callback
 {
-    std::cout << "Reciever :: " << *((uint32_t*) &(comm.m_rxBuffer[0])) << std::endl;
-}
+    public:
+        mycb(upm::NRF24L01 *com) : _com(com) {}
+        virtual void run()
+        {
+            if (_com != NULL)
+                std::cout << "Reciever :: " << *((uint32_t*) &(_com->m_rxBuffer[0])) << std::endl;
+            else
+                std::cout << "Example callback!" << std::endl;
+        }
+    private:
+        upm::NRF24L01* _com;
+};
 
 int
 main(int argc, char** argv)
 {
+    mycb cb(&comm);
+
     comm.setSourceAddress((uint8_t*) local_address);
     comm.setDestinationAddress((uint8_t*) broadcast_address);
     comm.setPayload(MAX_BUFFER);
     comm.configure();
     comm.setSpeedRate(upm::NRF_250KBPS);
     comm.setChannel(99);
-    comm.setDataReceivedHandler(nrf_handler);
+    comm.setDataReceivedHandler(&cb);
 
     signal(SIGINT, sig_handler);
 

examples/c++/nrf24l01-transmitter.cxx

@@ -46,10 +46,21 @@ sig_handler(int signo)
     }
 }
 
-void
-nrf_handler()
+class mycb : public virtual Callback
 {
-}
+    public:
+        mycb(upm::NRF24L01 *com) : _com(com) {}
+        virtual void run()
+        {
+            if (_com != NULL)
+                std::cout << "Reciever :: " << *((uint32_t*) &(_com->m_rxBuffer[0])) << std::endl;
+            else
+                std::cout << "Example callback!" << std::endl;
+        }
+    private:
+        upm::NRF24L01* _com;
+};
+
 
 int
 main(int argc, char** argv)
@@ -57,12 +68,14 @@ main(int argc, char** argv)
     //! [Interesting]
     uint32_t dummyData = 0;
     upm::NRF24L01 comm(7, 8);
+    mycb cb(&comm);
+
     comm.setSourceAddress((uint8_t*) srcAddress);
     comm.setDestinationAddress((uint8_t*) destAddress);
     comm.setPayload(MAX_BUFFER);
     comm.setChannel(99);
     comm.configure();
-    comm.setDataReceivedHandler(nrf_handler);
+    comm.setDataReceivedHandler(&cb);
 
     signal(SIGINT, sig_handler);
 

examples/c++/pulsensor.cxx

@@ -42,17 +42,24 @@ sig_handler(int signo)
     }
 }
 
-void
-handler(clbk_data data)
+
+//! [Interesting]
+class mycb : public virtual Callback
 {
-    printf("callback data (%d)\n", data.is_heart_beat);
-}
+    public:
+        virtual void run(clbk_data arg)
+        {
+            printf("callback data (%d)\n", arg.is_heart_beat);
+        }
+};
+
 
 int
 main(int argc, char** argv)
 {
+    mycb cb;
     //! [Interesting]
-    Pulsensor sensor(handler);
+    Pulsensor sensor(&cb);
 
     sensor.start_sampler();
     while (!doWork) {