The MultiSelectable Interface
For an applet to be selectable on multiple channels at the same time, or to have another applet belonging to the same package selected simultaneously, it must implement the javacard.framework.MultiSelectable interface. Implementing this interface allows the applet to be informed when it has been selected more than once or when applets in the same package are already selected during applet activation.
Note:
If an applet in any package implements the MultiSelectable interface, then all applets in the package must also implement the MultiSelectable interface. It is not possible to have multiselectable and non-multiselectable applets in the same package.
The MultiSelectable interface contains a select and a deselect method to manage multiselectable applets. These methods are described in the following topics: