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## javacard.framework
Class APDUException

    java.lang.Object
      java.lang.Throwable
          java.lang.Exception
              java.lang.RuntimeException
                  javacard.framework.CardRuntimeException
                      javacard.framework.APDUException

    public class APDUException

extends CardRuntimeException

`APDUException` represents an `APDU` related exception.

The `APDU` class throws Java Card runtime environment-owned instances of `APDUException`.

Java Card runtime environment-owned instances of exception classes are temporary Java Card runtime environment Entry Point Objects and can be accessed from any applet context. References to these temporary objects cannot be stored in class variables or instance variables or array components. See Runtime Environment Specification for the Java Card Platform, section 6.2.1 for details.

See Also:
  `APDU`

Field Summary
`static short` | `BAD_LENGTH` This reason code is used by the `APDU.setOutgoingLength()` method to indicate `APDUException.BAD_LENGTH` if `len` is negative, or greater than 256 and the currently selected applet does not implement the `javacardx.apdu.ExtendedLength` interface, or if non BLOCK CHAINED data transfer is requested and `len` is greater than (IFSD-2), where IFSD is the Outgoing Block Size.
`static short` | `BUFFER_BOUNDS` This reason code is used by the `APDU.sendBytes()` method to indicate that the sum of buffer offset parameter and the byte length parameter exceeds the APDU buffer size.
`static short` | `ILLEGAL_USE` This APDUException reason code indicates that the method should not be invoked based on the current state of the APDU.
`static short` | `IO_ERROR` This reason code indicates that an unrecoverable error occurred in the I/O transmission layer.
`static short` | `NO_T0_GETRESPONSE` This reason code indicates that during T=0 protocol, the CAD did not return a GET RESPONSE command in response to a <61xx> response status to send additional data.
`static short` | `NO_T0_REISSUE` This reason code indicates that during T=0 protocol, the CAD did not reissue the same APDU command with the corrected length in response to a <6Cxx> response status to request command reissue with the specified length.
`static short` | `T1_IFD_ABORT` This reason code indicates that during T=1 protocol, the CAD returned an ABORT S-Block command and aborted the data transfer.

Constructor Summary
`APDUException(short reason)` Constructs an APDUException.

Method Summary
`static void` | `throwIt(short reason)` Throws the Java Card runtime environment-owned instance of `APDUException` with the specified reason.

Methods inherited from class javacard.framework.CardRuntimeException
`getReason, setReason`

Methods inherited from class java.lang.Object
`equals`

Field Detail

### ILLEGAL_USE

    public static final short ILLEGAL_USE

  This APDUException reason code indicates that the method should not be invoked based on the current state of the APDU.

  See Also:
    Constant Field Values

### BUFFER_BOUNDS

    public static final short BUFFER_BOUNDS

  This reason code is used by the `APDU.sendBytes()` method to indicate that the sum of buffer offset parameter and the byte length parameter exceeds the APDU buffer size.

  See Also:
    Constant Field Values

### BAD_LENGTH

    public static final short BAD_LENGTH

  This reason code is used by the `APDU.setOutgoingLength()` method to indicate
  - `APDUException.BAD_LENGTH` if `len` is negative, or greater than 256 and the currently selected applet does not implement the `javacardx.apdu.ExtendedLength` interface, or if non BLOCK CHAINED data transfer is requested and `len` is greater than (IFSD-2), where IFSD is the Outgoing Block Size. The -2 accounts for the status bytes in T=1.

    See Also:
      Constant Field Values

### IO_ERROR

    public static final short IO_ERROR

  This reason code indicates that an unrecoverable error occurred in the I/O transmission layer.

  See Also:
    Constant Field Values

### NO_T0_GETRESPONSE

    public static final short NO_T0_GETRESPONSE

  This reason code indicates that during T=0 protocol, the CAD did not return a GET RESPONSE command in response to a <61xx> response status to send additional data. The outgoing transfer has been aborted. No more data or status can be sent to the CAD in this `Applet.process()` method.

  See Also:
    Constant Field Values

### T1_IFD_ABORT

    public static final short T1_IFD_ABORT

  This reason code indicates that during T=1 protocol, the CAD returned an ABORT S-Block command and aborted the data transfer. The incoming or outgoing transfer has been aborted. No more data can be received from the CAD. No more data or status can be sent to the CAD in this `Applet.process()` method.

  See Also:
    Constant Field Values

### NO_T0_REISSUE

    public static final short NO_T0_REISSUE

  This reason code indicates that during T=0 protocol, the CAD did not reissue the same APDU command with the corrected length in response to a <6Cxx> response status to request command reissue with the specified length. The outgoing transfer has been aborted. No more data or status can be sent to the CAD in this `Applet.process()` method.

  See Also:
    Constant Field Values

Constructor Detail

### APDUException

    public APDUException(short reason)

  Constructs an APDUException. To conserve on resources use `throwIt()` to use the Java Card runtime environment-owned instance of this class.

  Parameters:
    `reason` - the reason for the exception.

Method Detail

### throwIt

    public static void throwIt(short reason)

  Throws the Java Card runtime environment-owned instance of `APDUException` with the specified reason.

  Java Card runtime environment-owned instances of exception classes are temporary Java Card runtime environment Entry Point Objects and can be accessed from any applet context. References to these temporary objects cannot be stored in class variables or instance variables or array components. See Runtime Environment Specification for the Java Card Platform, section 6.2.1 for details.

  Parameters:
    `reason` - the reason for the exception
  Throws:
    `APDUException` - always

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