How change state when card is inserted and pulled out

Question

It is not Java Card question, but I think it is better place to post question like this. I have running Java Card applet on card, the communication between card and host application works, but could you anybody tell me how handle inserting and pulling card out? My idea is, I have running Java 6 SE application:
1. and I will insert the card into a reader and application will automatically find out that card was inserted and write out it.
2. and I will pull out the card from a reader and application will automatically find out that card was pulled out and write out it.
Could you anybody help me, please?
Thank you very much for any answer.
Martin

Answer 1

mFilo wrote:
It is not Java Card question, but I think it is better place to post question like this. I have running Java Card applet on card, the communication between card and host application works, but could you anybody tell me how handle inserting and pulling card out? My idea is, I have running Java 6 SE application:
1. and I will insert the card into a reader and application will automatically find out that card was inserted and write out it.
2. and I will pull out the card from a reader and application will automatically find out that card was pulled out and write out it.I think you can address only terminals. A way to identify a card is with additional info like ATR, CPLC data or specific applet's file control information (response to select command). I found in javax.smartcardio.CardTerminals following methods that might help:
waitForChange
public void waitForChange()
                   throws CardException
    Waits for card insertion or removal in any of the terminals of this object.
    This call is equivalent to calling waitForChange(0).
    Throws:
        IllegalStateException - if this CardTerminals object does not contain any terminals
        CardException - if the card operation failed
waitForChange
public abstract boolean waitForChange(long timeout)
                               throws CardException
    Waits for card insertion or removal in any of the terminals of this object or until the timeout expires.
    This method examines each CardTerminal of this object. If a card was inserted into or removed from a CardTerminal since the previous call to waitForChange(), it returns immediately. Otherwise, or if this is the first call to waitForChange() on this object, it blocks until a card is inserted into or removed from a CardTerminal.
    If timeout is greater than 0, the method returns after timeout milliseconds even if there is no change in state. In that case, this method returns false; otherwise it returns true.
    This method is often used in a loop in combination with list(State.CARD_INSERTION), for example:
      TerminalFactory factory = ...;
      CardTerminals terminals = factory.terminals();
      while (true) {
          for (CardTerminal terminal : terminals.list(CARD_INSERTION)) {
              // examine Card in terminal, return if it matches
          terminals.waitForChange();
    Parameters:
        timeout - if positive, block for up to timeout milliseconds; if zero, block indefinitely; must not be negative
    Returns:
        false if the method returns due to an expired timeout, true otherwise.
    Throws:
        IllegalStateException - if this CardTerminals object does not contain any terminals
        IllegalArgumentException - if timeout is negative
        CardException - if the card operation failed