javacardx.external (Java Card API, Connected Edition)
Date: 2009-12-11

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## Package javacardx.external

Extension package that provides mechanisms to access memory subsystems which are not directly addressable by the Java Card runtime environment(Java Card RE) on the Java Card platform.

See:
Description

Interface Summary
MemoryAccess | This interface provides methods to read and write the external memory space.

Class Summary
Memory | This class provides access to memory subsystems that are not directly addressable, typically that of other contactless state machine handlers such as MifareTM.

Exception Summary
ExternalException | `ExternalException` represents an external subsystem related exception.

## Package javacardx.external Description

Extension package that provides mechanisms to access memory subsystems which are not directly addressable by the Java Card runtime environment(Java Card RE) on the Java Card platform. The platform must support this optional package if an external memory access feature is included in the implementation.

The `javacardx.external` package contains the `Memory` class and the `MemoryAccess` interface. The `Memory` class provides a factory method for creating an instance of the `MemoryAccess` interface suitable for accessing supported memory subsystems.

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