# Class NoSuchMechanismException

java.lang.Object
java.lang.Throwable
java.lang.Exception
java.lang.RuntimeException
javax.xml.crypto.NoSuchMechanismException

All Implemented Interfaces:
  `Serializable`

public class NoSuchMechanismException extends RuntimeException
This exception is thrown when a particular XML mechanism is requested but is not available in the environment.

A `NoSuchMechanismException` can contain a cause: another throwable that caused this `NoSuchMechanismException` to get thrown.

Since:
  1.6
See Also:
  - `XMLSignatureFactory.getInstance`
  - `KeyInfoFactory.getInstance`
  - Serialized Form

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `NoSuchMechanismException()`
  Constructs a new `NoSuchMechanismException` with `null` as its detail message.
  `NoSuchMechanismException(String message)`
  Constructs a new `NoSuchMechanismException` with the specified detail message.
  `NoSuchMechanismException(String message, Throwable cause)`
  Constructs a new `NoSuchMechanismException` with the specified detail message and cause.
  `NoSuchMechanismException(Throwable cause)`
  Constructs a new `NoSuchMechanismException` with the specified cause and a detail message of `(cause==null ? null : cause.toString())` (which typically contains the class and detail message of `cause`).

- ## Method Summary

  Modifier and Type
  Method
  Description
  `Throwable`
  `getCause()`
  Returns the cause of this `NoSuchMechanismException` or `null` if the cause is nonexistent or unknown.
  `void`
  `printStackTrace()`
  Prints this `NoSuchMechanismException`, its backtrace and the cause's backtrace to the standard error stream.
  `void`
  `printStackTrace(PrintStream s)`
  Prints this `NoSuchMechanismException`, its backtrace and the cause's backtrace to the specified print stream.
  `void`
  `printStackTrace(PrintWriter s)`
  Prints this `NoSuchMechanismException`, its backtrace and the cause's backtrace to the specified print writer.

  ### Methods declared in class Throwable

  `addSuppressed, fillInStackTrace, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, setStackTrace, toString`

  ### Methods declared in class Object

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

- ## Constructor Details

  - ### NoSuchMechanismException

    public NoSuchMechanismException()
    Constructs a new `NoSuchMechanismException` with `null` as its detail message.

  - ### NoSuchMechanismException

    public NoSuchMechanismException(String message)
    Constructs a new `NoSuchMechanismException` with the specified detail message.
    Parameters:
      `message` - the detail message

  - ### NoSuchMechanismException

    public NoSuchMechanismException(String message, Throwable cause)
    Constructs a new `NoSuchMechanismException` with the specified detail message and cause.

    Note that the detail message associated with `cause` is not automatically incorporated in this exception's detail message.

    Parameters:
      `message` - the detail message
      `cause` - the cause (A `null` value is permitted, and indicates that the cause is nonexistent or unknown.)

  - ### NoSuchMechanismException

    public NoSuchMechanismException(Throwable cause)
    Constructs a new `NoSuchMechanismException` with the specified cause and a detail message of `(cause==null ? null : cause.toString())` (which typically contains the class and detail message of `cause`).
    Parameters:
      `cause` - the cause (A `null` value is permitted, and indicates that the cause is nonexistent or unknown.)

- ## Method Details

  - ### getCause

    public Throwable getCause()
    Returns the cause of this `NoSuchMechanismException` or `null` if the cause is nonexistent or unknown. (The cause is the throwable that caused this `NoSuchMechanismException` to get thrown.)
    Overrides:
      `getCause` in class `Throwable`
    Returns:
      the cause of this `NoSuchMechanismException` or `null` if the cause is nonexistent or unknown.

  - ### printStackTrace

    public void printStackTrace()
    Prints this `NoSuchMechanismException`, its backtrace and the cause's backtrace to the standard error stream.
    Overrides:
      `printStackTrace` in class `Throwable`

  - ### printStackTrace

    public void printStackTrace(PrintStream s)
    Prints this `NoSuchMechanismException`, its backtrace and the cause's backtrace to the specified print stream.
    Overrides:
      `printStackTrace` in class `Throwable`
    Parameters:
      `s` - `PrintStream` to use for output

  - ### printStackTrace

    public void printStackTrace(PrintWriter s)
    Prints this `NoSuchMechanismException`, its backtrace and the cause's backtrace to the specified print writer.
    Overrides:
      `printStackTrace` in class `Throwable`
    Parameters:
      `s` - `PrintWriter` to use for output