Typical Java SmartCard workflow

smartCard.java

TerminalFactory terminalFactory = TerminalFactory.getDefault();

CardTerminals terminals = terminalFactory.terminals();

List<CardTerminal> terminalsList = terminals.list();

CardTerminal terminal = terminalsList.get(0);

Card card = terminal.connect("T0");

CardChannel channel = card.getBasicChannel();

CommandAPDU apdu = new CommandAPDU(...);

ResponseAPDU response = channel.transmit(apdu);

// don’t call close() on basic channel, call Card.disconnect() instead

card.disconnect(false);