Conversione codice c++ in java x processing

[VincenzoIaco]

Ciao ragazzi ho un problema. Dovrei convertire questo in java:

#ifndef KEYPAD_H
#define KEYPAD_H

#include "utility/Key.h"

// Arduino versioning.
#if defined(ARDUINO) && ARDUINO >= 100
#include "Arduino.h"
#else
#include "WProgram.h"
#endif

// bperrybap - Thanks for a well reasoned argument and the following macro(s).
// See http://arduino.cc/forum/index.php/to...tml#msg1069480
#ifndef INPUT_PULLUP
#warning "Using  pinMode() INPUT_PULLUP AVR emulation"
#define INPUT_PULLUP 0x2
#define pinMode(_pin, _mode) _mypinMode(_pin, _mode)
#define _mypinMode(_pin, _mode)  \
do {							 \
	if(_mode == INPUT_PULLUP)	 \
		pinMode(_pin, INPUT);	 \
		digitalWrite(_pin, 1);	 \
	if(_mode != INPUT_PULLUP)	 \
		pinMode(_pin, _mode);	 \
}while(0)
#endif


#define OPEN LOW
#define CLOSED HIGH

typedef char KeypadEvent;
typedef unsigned int uint;
typedef unsigned long ulong;

// Made changes according to this post http://arduino.cc/forum/index.php?topic=58337.0
// by Nick Gammon. Thanks for the input Nick. It actually saved 78 bytes for me. :)
typedef struct {
    byte rows;
    byte columns;
} KeypadSize;

#define LIST_MAX 10		// Max number of keys on the active list.
#define MAPSIZE 10		// MAPSIZE is the number of rows (times 16 columns)
#define makeKeymap(x) ((char*)x)


//class Keypad : public Key, public HAL_obj {
class Keypad : public Key {
public:

	Keypad(char *userKeymap, byte *row, byte *col, byte numRows, byte numCols);

	virtual void pin_mode(byte pinNum, byte mode) { pinMode(pinNum, mode); }
	virtual void pin_write(byte pinNum, boolean level) { digitalWrite(pinNum, level); }
	virtual int  pin_read(byte pinNum) { return digitalRead(pinNum); }

	uint bitMap[MAPSIZE];	// 10 row x 16 column array of bits. Except Due which has 32 columns.
	Key key[LIST_MAX];
	unsigned long holdTimer;

	char getKey();
	bool getKeys();
	KeyState getState();
	void begin(char *userKeymap);
	bool isPressed(char keyChar);
	void setDebounceTime(uint);
	void setHoldTime(uint);
	void addEventListener(void (*listener)(char));
	int findInList(char keyChar);
	int findInList(int keyCode);
	char waitForKey();
	bool keyStateChanged();
	byte numKeys();

private:
	unsigned long startTime;
	char *keymap;
    byte *rowPins;
    byte *columnPins;
	KeypadSize sizeKpd;
	uint debounceTime;
	uint holdTime;

	void scanKeys();
	bool updateList();
	void nextKeyState(byte n, boolean button);
	void transitionTo(byte n, KeyState nextState);
	void (*keypadEventListener)(char);
};

#endif