# LowpanException Summary:[Ctors](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanException#pubctors)\|[Methods](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanException#pubmethods)\|[Inherited Methods](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanException#inhmethods)\|[\[Expand All\]](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanException#) # LowpanException ` public class LowpanException ` ` `` `` extends `[Exception](https://developer.android.com/reference/java/lang/Exception)` `` ` |---|---|---|--------------------------------------------------| | [java.lang.Object](https://developer.android.com/reference/java/lang/Object) |||| | ↳ | [java.lang.Throwable](https://developer.android.com/reference/java/lang/Throwable) ||| | | ↳ | [java.lang.Exception](https://developer.android.com/reference/java/lang/Exception) || | | | ↳ | com.google.android.things.lowpan.LowpanException | |------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanException#)Known Direct Subclasses [InterfaceDisabledException](https://developer.android.com/reference/com/google/android/things/lowpan/InterfaceDisabledException),[JoinFailedException](https://developer.android.com/reference/com/google/android/things/lowpan/JoinFailedException),[NetworkAlreadyExistsException](https://developer.android.com/reference/com/google/android/things/lowpan/NetworkAlreadyExistsException),[OperationCanceledException](https://developer.android.com/reference/com/google/android/things/lowpan/OperationCanceledException),[WrongStateException](https://developer.android.com/reference/com/google/android/things/lowpan/WrongStateException) |-----------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------| | [InterfaceDisabledException](https://developer.android.com/reference/com/google/android/things/lowpan/InterfaceDisabledException) | Exception indicating this operation requires the interface to be enabled. | | [JoinFailedException](https://developer.android.com/reference/com/google/android/things/lowpan/JoinFailedException) | Exception indicating the join operation has failed. | | [NetworkAlreadyExistsException](https://developer.android.com/reference/com/google/android/things/lowpan/NetworkAlreadyExistsException) | Exception indicating the form operation found a network nearby with the same identity. | | [OperationCanceledException](https://developer.android.com/reference/com/google/android/things/lowpan/OperationCanceledException) | Exception indicating this operation was canceled by the driver before it could finish. | | [WrongStateException](https://developer.android.com/reference/com/google/android/things/lowpan/WrongStateException) | Exception indicating the interface is the wrong state for an operation. | | |---|---| | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanException#)Known Indirect Subclasses [JoinFailedAtAuthException](https://developer.android.com/reference/com/google/android/things/lowpan/JoinFailedAtAuthException),[JoinFailedAtScanException](https://developer.android.com/reference/com/google/android/things/lowpan/JoinFailedAtScanException) |---------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------| | [JoinFailedAtAuthException](https://developer.android.com/reference/com/google/android/things/lowpan/JoinFailedAtAuthException) | Exception indicating the join operation was unable to find the given network. | | [JoinFailedAtScanException](https://developer.android.com/reference/com/google/android/things/lowpan/JoinFailedAtScanException) | Exception indicating the join operation was unable to find the given network. | ||
*** ** * ** *** Exception base class for LoWPAN-specific exceptions. ## Summary | ### Public constructors || |------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---| | ` `[LowpanException](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanException#LowpanException())`() ` | | ` `[LowpanException](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanException#LowpanException(java.lang.String))`(`[String](https://developer.android.com/reference/java/lang/String)` message) ` | | ` `[LowpanException](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanException#LowpanException(java.lang.String, java.lang.Throwable))`(`[String](https://developer.android.com/reference/java/lang/String)` message, `[Throwable](https://developer.android.com/reference/java/lang/Throwable)` cause) ` | | ` `[LowpanException](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanException#LowpanException(java.lang.Exception))`(`[Exception](https://developer.android.com/reference/java/lang/Exception)` cause) ` | | ### Public methods || |-----------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` `[StackTraceElement[]](https://developer.android.com/reference/java/lang/StackTraceElement) | ` `[getStackTrace](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanException#getStackTrace())`() ` Provides programmatic access to the stack trace information printed by[printStackTrace()](https://developer.android.com/reference/java/lang/Throwable.html#printStackTrace()). | | ### Inherited methods | |-----------------------|---| | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanException#)From class` `[java.lang.Throwable](https://developer.android.com/reference/java/lang/Throwable)` ` |-----------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` final void` | ` `[addSuppressed](https://developer.android.com/reference/java/lang/Throwable#addSuppressed(java.lang.Throwable))`(`[Throwable](https://developer.android.com/reference/java/lang/Throwable)` exception) ` Appends the specified exception to the exceptions that were suppressed in order to deliver this exception. | | ` `[Throwable](https://developer.android.com/reference/java/lang/Throwable) | ` `[fillInStackTrace](https://developer.android.com/reference/java/lang/Throwable#fillInStackTrace())`() ` Fills in the execution stack trace. | | ` `[Throwable](https://developer.android.com/reference/java/lang/Throwable) | ` `[getCause](https://developer.android.com/reference/java/lang/Throwable#getCause())`() ` Returns the cause of this throwable or`null`if the cause is nonexistent or unknown. | | ` `[String](https://developer.android.com/reference/java/lang/String) | ` `[getLocalizedMessage](https://developer.android.com/reference/java/lang/Throwable#getLocalizedMessage())`() ` Creates a localized description of this throwable. | | ` `[String](https://developer.android.com/reference/java/lang/String) | ` `[getMessage](https://developer.android.com/reference/java/lang/Throwable#getMessage())`() ` Returns the detail message string of this throwable. | | ` `[StackTraceElement[]](https://developer.android.com/reference/java/lang/StackTraceElement) | ` `[getStackTrace](https://developer.android.com/reference/java/lang/Throwable#getStackTrace())`() ` Provides programmatic access to the stack trace information printed by[printStackTrace()](https://developer.android.com/reference/java/lang/Throwable.html#printStackTrace()). | | ` final `[Throwable[]](https://developer.android.com/reference/java/lang/Throwable) | ` `[getSuppressed](https://developer.android.com/reference/java/lang/Throwable#getSuppressed())`() ` Returns an array containing all of the exceptions that were suppressed, typically by the`try`-with-resources statement, in order to deliver this exception. | | ` `[Throwable](https://developer.android.com/reference/java/lang/Throwable) | ` `[initCause](https://developer.android.com/reference/java/lang/Throwable#initCause(java.lang.Throwable))`(`[Throwable](https://developer.android.com/reference/java/lang/Throwable)` cause) ` Initializes the*cause*of this throwable to the specified value. | | ` void` | ` `[printStackTrace](https://developer.android.com/reference/java/lang/Throwable#printStackTrace())`() ` Prints this throwable and its backtrace to the standard error stream. | | ` void` | ` `[printStackTrace](https://developer.android.com/reference/java/lang/Throwable#printStackTrace(java.io.PrintWriter))`(`[PrintWriter](https://developer.android.com/reference/java/io/PrintWriter)` s) ` Prints this throwable and its backtrace to the specified print writer. | | ` void` | ` `[printStackTrace](https://developer.android.com/reference/java/lang/Throwable#printStackTrace(java.io.PrintStream))`(`[PrintStream](https://developer.android.com/reference/java/io/PrintStream)` s) ` Prints this throwable and its backtrace to the specified print stream. | | ` void` | ` `[setStackTrace](https://developer.android.com/reference/java/lang/Throwable#setStackTrace(java.lang.StackTraceElement[]))`(`[StackTraceElement[]](https://developer.android.com/reference/java/lang/StackTraceElement)` stackTrace) ` Sets the stack trace elements that will be returned by[getStackTrace()](https://developer.android.com/reference/java/lang/Throwable.html#getStackTrace())and printed by[printStackTrace()](https://developer.android.com/reference/java/lang/Throwable.html#printStackTrace())and related methods. | | ` `[String](https://developer.android.com/reference/java/lang/String) | ` `[toString](https://developer.android.com/reference/java/lang/Throwable#toString())`() ` Returns a short description of this throwable. | || | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanException#)From class` `[java.lang.Object](https://developer.android.com/reference/java/lang/Object)` ` |--------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` `[Object](https://developer.android.com/reference/java/lang/Object) | ` `[clone](https://developer.android.com/reference/java/lang/Object#clone())`() ` Creates and returns a copy of this object. | | ` boolean` | ` `[equals](https://developer.android.com/reference/java/lang/Object#equals(java.lang.Object))`(`[Object](https://developer.android.com/reference/java/lang/Object)` obj) ` Indicates whether some other object is "equal to" this one. | | ` void` | ` `[finalize](https://developer.android.com/reference/java/lang/Object#finalize())`() ` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. | | ` final `[Class](https://developer.android.com/reference/java/lang/Class)`` | ` `[getClass](https://developer.android.com/reference/java/lang/Object#getClass())`() ` Returns the runtime class of this`Object`. | | ` int` | ` `[hashCode](https://developer.android.com/reference/java/lang/Object#hashCode())`() ` Returns a hash code value for the object. | | ` final void` | ` `[notify](https://developer.android.com/reference/java/lang/Object#notify())`() ` Wakes up a single thread that is waiting on this object's monitor. | | ` final void` | ` `[notifyAll](https://developer.android.com/reference/java/lang/Object#notifyAll())`() ` Wakes up all threads that are waiting on this object's monitor. | | ` `[String](https://developer.android.com/reference/java/lang/String) | ` `[toString](https://developer.android.com/reference/java/lang/Object#toString())`() ` Returns a string representation of the object. | | ` final void` | ` `[wait](https://developer.android.com/reference/java/lang/Object#wait(long, int))`(long millis, int nanos) ` Causes the current thread to wait until another thread invokes the[notify()](https://developer.android.com/reference/java/lang/Object.html#notify())method or the[notifyAll()](https://developer.android.com/reference/java/lang/Object.html#notifyAll())method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed. | | ` final void` | ` `[wait](https://developer.android.com/reference/java/lang/Object#wait(long))`(long millis) ` Causes the current thread to wait until either another thread invokes the[notify()](https://developer.android.com/reference/java/lang/Object.html#notify())method or the[notifyAll()](https://developer.android.com/reference/java/lang/Object.html#notifyAll())method for this object, or a specified amount of time has elapsed. | | ` final void` | ` `[wait](https://developer.android.com/reference/java/lang/Object#wait())`() ` Causes the current thread to wait until another thread invokes the[notify()](https://developer.android.com/reference/java/lang/Object.html#notify())method or the[notifyAll()](https://developer.android.com/reference/java/lang/Object.html#notifyAll())method for this object. | || ## Public constructors ### LowpanException ``` LowpanException () ```

### LowpanException ``` LowpanException (String message) ```

| Parameters || |-----------|-----------------| | `message` | `String`
| ### LowpanException ``` LowpanException (String message, Throwable cause) ```

| Parameters || |-----------|--------------------| | `message` | `String`
| | `cause` | `Throwable`
| ### LowpanException ``` LowpanException (Exception cause) ```

| Parameters || |---------|--------------------| | `cause` | `Exception`
| ## Public methods ### getStackTrace ``` StackTraceElement[] getStackTrace () ``` Provides programmatic access to the stack trace information printed by[printStackTrace()](https://developer.android.com/reference/java/lang/Throwable.html#printStackTrace()). Returns an array of stack trace elements, each representing one stack frame. The zeroth element of the array (assuming the array's length is non-zero) represents the top of the stack, which is the last method invocation in the sequence. Typically, this is the point at which this throwable was created and thrown. The last element of the array (assuming the array's length is non-zero) represents the bottom of the stack, which is the first method invocation in the sequence. Some virtual machines may, under some circumstances, omit one or more stack frames from the stack trace. In the extreme case, a virtual machine that has no stack trace information concerning this throwable is permitted to return a zero-length array from this method. Generally speaking, the array returned by this method will contain one element for every frame that would be printed by`printStackTrace`. Writes to the returned array do not affect future calls to this method.
| Returns || |--------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------| | [StackTraceElement[]](https://developer.android.com/reference/java/lang/StackTraceElement) | an array of stack trace elements representing the stack trace pertaining to this throwable.
| - ## Classes - [LowpanBeaconInfo](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanBeaconInfo) - [LowpanCredential](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanCredential) - [LowpanEnergyScanResult](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanEnergyScanResult) - [LowpanIdentity](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanIdentity) - [LowpanIdentity.Builder](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanIdentity.Builder) - [LowpanInterface](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanInterface) - [LowpanInterface.Callback](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanInterface.Callback) - [LowpanManager](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanManager) - [LowpanManager.Callback](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanManager.Callback) - [LowpanProvisioningParams](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanProvisioningParams) - [LowpanProvisioningParams.Builder](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanProvisioningParams.Builder) - [LowpanScanner](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanScanner) - [LowpanScanner.Callback](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanScanner.Callback) - ## Exceptions - [InterfaceDisabledException](https://developer.android.com/reference/com/google/android/things/lowpan/InterfaceDisabledException) - [JoinFailedAtAuthException](https://developer.android.com/reference/com/google/android/things/lowpan/JoinFailedAtAuthException) - [JoinFailedAtScanException](https://developer.android.com/reference/com/google/android/things/lowpan/JoinFailedAtScanException) - [JoinFailedException](https://developer.android.com/reference/com/google/android/things/lowpan/JoinFailedException) - [LowpanException](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanException) - [LowpanRuntimeException](https://developer.android.com/reference/com/google/android/things/lowpan/LowpanRuntimeException) - [NetworkAlreadyExistsException](https://developer.android.com/reference/com/google/android/things/lowpan/NetworkAlreadyExistsException) - [OperationCanceledException](https://developer.android.com/reference/com/google/android/things/lowpan/OperationCanceledException) - [WrongStateException](https://developer.android.com/reference/com/google/android/things/lowpan/WrongStateException)