The TerminalFactorySpi class defines the service provider interface. Applications do not access this class directly, instead see TerminalFactory.

Service providers that want to write a new implementation should define a concrete subclass of TerminalFactorySpi with a constructor that takes an Object as parameter. That class needs to be registered in a java.security.Provider. The engine type is TerminalFactory. Service providers also need to implement subclasses of the abstract classes CardTerminals, CardTerminal, Card, and CardChannel.

For example:

file MyProvider.java:

 package com.somedomain.card;

 import java.security.Provider;

 public class MyProvider extends Provider {
     public MyProvider() {
         super("MyProvider", 1.0d, "Smart Card Example");
         put("TerminalFactory.MyType", "com.somedomain.card.MySpi");
     }
 }

file MySpi.java

 package com.somedomain.card;

 import javax.smartcardio.*;

 public class MySpi extends TerminalFactoySpi {
      public MySpi(Object parameter) {
          // initialize as appropriate
      }
      protected CardTerminals engineTerminals() {
          // add implementation code here
      }
 }