Class HardwareException

java.lang.Object

java.lang.Throwable

java.lang.Exception

java.io.IOException

com.codename1.hardware.HardwareException

public class HardwareException
extends IOException

Thrown when a hardware bus or pin cannot be opened or an I/O operation on it fails: the device node is absent, the process lacks permission for it, the line is already claimed, or the peripheral did not acknowledge.

getErrno() carries the operating system error number when the port has one (Linux errno), and 0 otherwise, so code can tell "no such device" from "permission denied" without parsing the message.

Constructor Summary

Constructors

Constructor	Description
HardwareException(String message)	Creates an exception with a message and no operating system error.
HardwareException(String message, int errno)	Creates an exception with a message and the operating system error number that caused it.

Method Summary

Modifier and Type	Method	Description
int	getErrno()	The operating system error number behind this failure, or 0 when the port did not report one.

Methods inherited from class Throwable

addSuppressed, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

HardwareException

public HardwareException(String message)

Creates an exception with a message and no operating system error.

HardwareException

public HardwareException(String message,
 int errno)

Creates an exception with a message and the operating system error number that caused it.

Method Details

getErrno

public int getErrno()

The operating system error number behind this failure, or 0 when the port did not report one.