Added in API level 1

ClassNotFoundException

open class ClassNotFoundException : ReflectiveOperationException

kotlin.Any
↳	kotlin.Throwable
	↳	java.lang.Exception
		↳	java.lang.ReflectiveOperationException
			↳	java.lang.ClassNotFoundException

Thrown when an application tries to load in a class through its string name using:

The forName method in class Class.
The findSystemClass method in class ClassLoader .
The loadClass method in class ClassLoader.

but no definition for the class with the specified name could be found.

As of release 1.4, this exception has been retrofitted to conform to the general purpose exception-chaining mechanism. The "optional exception that was raised while loading the class" that may be provided at construction time and accessed via the getException() method is now known as the cause, and may be accessed via the Throwable#getCause() method, as well as the aforementioned "legacy method."

Summary

Public constructors
`<init>()` Constructs a `ClassNotFoundException` with no detail message.
`<init>(s: String!)` Constructs a `ClassNotFoundException` with the specified detail message.
`<init>(s: String!, ex: Throwable!)` Constructs a `ClassNotFoundException` with the specified detail message and optional exception that was raised while loading the class.

Public methods
open Throwable!	`getException()` Returns the exception that was raised if an error occurred while attempting to load the class.

Properties
open Throwable?	`cause` Returns the cause of this exception (the exception that was raised if an error occurred while attempting to load the class; otherwise null).

Public constructors

<init>

Added in API level 1

ClassNotFoundException()

Constructs a ClassNotFoundException with no detail message.

<init>

Added in API level 1

ClassNotFoundException(s: String!)

Constructs a ClassNotFoundException with the specified detail message.

Parameters
`s`	String!: the detail message.

<init>

Added in API level 1

ClassNotFoundException(
    s: String!, 
    ex: Throwable!)

Constructs a ClassNotFoundException with the specified detail message and optional exception that was raised while loading the class.

Parameters
`s`	String!: the detail message
`ex`	Throwable!: the exception that was raised while loading the class

Public methods

getException

Added in API level 1

open fun getException(): Throwable!

Returns the exception that was raised if an error occurred while attempting to load the class. Otherwise, returns null.

This method predates the general-purpose exception chaining facility. The Throwable#getCause() method is now the preferred means of obtaining this information.

Return
`Throwable!`	the `Exception` that was raised while loading a class

Properties

cause

Added in API level 1

open val cause: Throwable?

Returns the cause of this exception (the exception that was raised if an error occurred while attempting to load the class; otherwise null).

Return
`Throwable?`	the cause of this exception.