The client application must open the connection to the card and close it at the end.
Note:
ApduIOCardAccessor takes its settings from the file jcclient.properties. For example. when the RMIPurse sample demo client application runs, the JC_CLASSIC_HOME/samples/classic_applets/RMIPurse/client directory containing the properties file is included in the CLASSPATH. The directory in which you installed the developer's kit is indicated as JC_CLASSIC_HOME.
On Microsoft Windows platforms, use backslashes in directory paths, instead of forward slashes.
The following code shows opening and closing the connection using the RMI client framework:
CardAccessor ca = null;
// The following line initializes card connection according to
// parameters listed in the jcclient.properties file:
ca = new ApduIOCardAccessor();
...
// The following line powers down the card and closes the connection:
ca.closeCard();