// the used ISO7816 fields are all valid
public void process(APDU apdu) throws ISOException {
byte[] buffer = apdu.getBuffer();
// .. process the incoming data and reply
if (buffer[ISO7816.OFFSET_CLA] == (byte) 0) {
switch (buffer[ISO7816.OFFSET_INS]) {
case ISO7816.INS_SELECT:
//...
// send response data to select command
short Le = apdu.setOutgoing();
// assume data containing response bytes in
// replyData[] array.
if ( Le < 5)
ISOException.throwIt(ISO7816.SW_WRONG_LENGTH);
apdu.setOutgoingLength((short) replyData.length );
apdu.sendBytesLong(replyData,
(short) 0,
(short)replyData.length);
break;
// possibly more case statements
}
}
}

public void process(APDU apdu) {}

public void process() {}

public void process(APDU apdu) {
super.process(apdu);
}

public void process(APDU apdu) {
byte[] byteArray = apdu.getBuffer();

// the field OFFSET_CLA is a byte
if (byteArray[ISO7816.OFFSET_CLA] == SELECT_APDU_COMMAND) {
return;
}

if (byteArray[ISO7816.OFFSET_CLA] != VirtualCurrency_CLA) {
return;
}

if (!ownerPin.isValidated()) {
ISOException.throwIt(SW_PIN_VERIFICATION_REQUIRED);
}

// perform requested service
/*
* assume that the service methods called in here are defined in this
* class! The ISO7816 fields used in here are all valid as well.
*/
switch (byteArray[ISO7816.OFFSET_INS]) {
case CHECK_PIN: checkPIN(apdu);
break;

case GET_ALL_GROUP_PRIVILEGES: getAllGroupPrivileges(apdu);
break;

case GET_GROUP_ROLES: getGroupRoles(apdu);
break;

case SET_GROUP_ROLES: setGroupRoles(apdu);
break;

case GET_VIRTUAL_SCORE: getVirtualScore(apdu);
break;

case ADD_SCORE: addScore(apdu);
break;

case SUBTRACT_SCORE: subtractScore(apdu);
break;

case GET_IDENTITY: getIdentity(apdu);
break;

default: ISOException.throwIt(ISO7816.SW_INS_NOT_SUPPORTED);
}
}

public boolean process() {
return false;
}