java.lang
Class ClassNotFoundException

java.lang.Object sample code for java.lang.Object definition code for java.lang.Object 
  extended by java.lang.Throwable sample code for java.lang.Throwable definition code for java.lang.Throwable 
      extended by java.lang.Exception sample code for java.lang.Exception definition code for java.lang.Exception 
          extended by java.lang.ClassNotFoundException
All Implemented Interfaces:
Serializable sample code for java.io.Serializable definition code for java.io.Serializable

public class ClassNotFoundException
extends Exception sample code for java.lang.Exception definition code for java.lang.Exception

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

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() sample code for java.lang.ClassNotFoundException.getException() definition code for java.lang.ClassNotFoundException.getException() method is now known as the cause, and may be accessed via the Throwable.getCause() sample code for java.lang.Throwable.getCause() definition code for java.lang.Throwable.getCause() method, as well as the aforementioned "legacy method."

Since:
JDK1.0
See Also:
Class.forName(java.lang.String) sample code for java.lang.Class.forName(java.lang.String) definition code for java.lang.Class.forName(java.lang.String) , ClassLoader.findSystemClass(java.lang.String) sample code for java.lang.ClassLoader.findSystemClass(java.lang.String) definition code for java.lang.ClassLoader.findSystemClass(java.lang.String) , ClassLoader.loadClass(java.lang.String, boolean) sample code for java.lang.ClassLoader.loadClass(java.lang.String, boolean) definition code for java.lang.ClassLoader.loadClass(java.lang.String, boolean) , Serialized Form

Constructor Summary
ClassNotFoundException sample code for java.lang.ClassNotFoundException.ClassNotFoundException() definition code for java.lang.ClassNotFoundException.ClassNotFoundException() ()
          Constructs a ClassNotFoundException with no detail message.
ClassNotFoundException sample code for java.lang.ClassNotFoundException.ClassNotFoundException(java.lang.String) definition code for java.lang.ClassNotFoundException.ClassNotFoundException(java.lang.String) (String sample code for java.lang.String definition code for java.lang.String  s)
          Constructs a ClassNotFoundException with the specified detail message.
ClassNotFoundException sample code for java.lang.ClassNotFoundException.ClassNotFoundException(java.lang.String, java.lang.Throwable) definition code for java.lang.ClassNotFoundException.ClassNotFoundException(java.lang.String, java.lang.Throwable) (String sample code for java.lang.String definition code for java.lang.String  s, Throwable sample code for java.lang.Throwable definition code for java.lang.Throwable  ex)
          Constructs a ClassNotFoundException with the specified detail message and optional exception that was raised while loading the class.
 
Method Summary
 Throwable sample code for java.lang.Throwable definition code for java.lang.Throwable getCause sample code for java.lang.ClassNotFoundException.getCause() definition code for java.lang.ClassNotFoundException.getCause() ()
          Returns the cause of this exception (the exception that was raised if an error occurred while attempting to load the class; otherwise null).
 Throwable sample code for java.lang.Throwable definition code for java.lang.Throwable getException sample code for java.lang.ClassNotFoundException.getException() definition code for java.lang.ClassNotFoundException.getException() ()
          Returns the exception that was raised if an error occurred while attempting to load the class.
 
Methods inherited from class java.lang.Throwable sample code for java.lang.Throwable definition code for java.lang.Throwable
fillInStackTrace sample code for java.lang.Throwable.fillInStackTrace() definition code for java.lang.Throwable.fillInStackTrace() , getLocalizedMessage sample code for java.lang.Throwable.getLocalizedMessage() definition code for java.lang.Throwable.getLocalizedMessage() , getMessage sample code for java.lang.Throwable.getMessage() definition code for java.lang.Throwable.getMessage() , getStackTrace sample code for java.lang.Throwable.getStackTrace() definition code for java.lang.Throwable.getStackTrace() , initCause sample code for java.lang.Throwable.initCause(java.lang.Throwable) definition code for java.lang.Throwable.initCause(java.lang.Throwable) , printStackTrace sample code for java.lang.Throwable.printStackTrace() definition code for java.lang.Throwable.printStackTrace() , printStackTrace sample code for java.lang.Throwable.printStackTrace(java.io.PrintStream) definition code for java.lang.Throwable.printStackTrace(java.io.PrintStream) , printStackTrace sample code for java.lang.Throwable.printStackTrace(java.io.PrintWriter) definition code for java.lang.Throwable.printStackTrace(java.io.PrintWriter) , setStackTrace sample code for java.lang.Throwable.setStackTrace(java.lang.StackTraceElement[]) definition code for java.lang.Throwable.setStackTrace(java.lang.StackTraceElement[]) , toString sample code for java.lang.Throwable.toString() definition code for java.lang.Throwable.toString()
 
Methods inherited from class java.lang.Object sample code for java.lang.Object definition code for java.lang.Object
clone sample code for java.lang.Object.clone() definition code for java.lang.Object.clone() , equals sample code for java.lang.Object.equals(java.lang.Object) definition code for java.lang.Object.equals(java.lang.Object) , finalize sample code for java.lang.Object.finalize() definition code for java.lang.Object.finalize() , getClass sample code for java.lang.Object.getClass() definition code for java.lang.Object.getClass() , hashCode sample code for java.lang.Object.hashCode() definition code for java.lang.Object.hashCode() , notify sample code for java.lang.Object.notify() definition code for java.lang.Object.notify() , notifyAll sample code for java.lang.Object.notifyAll() definition code for java.lang.Object.notifyAll() , wait sample code for java.lang.Object.wait() definition code for java.lang.Object.wait() , wait sample code for java.lang.Object.wait(long) definition code for java.lang.Object.wait(long) , wait sample code for java.lang.Object.wait(long, int) definition code for java.lang.Object.wait(long, int)
 

Constructor Detail

ClassNotFoundException sample code for java.lang.ClassNotFoundException() definition code for java.lang.ClassNotFoundException()

public ClassNotFoundException()
Constructs a ClassNotFoundException with no detail message.


ClassNotFoundException sample code for java.lang.ClassNotFoundException(java.lang.String) definition code for java.lang.ClassNotFoundException(java.lang.String)

public ClassNotFoundException(String sample code for java.lang.String definition code for java.lang.String  s)
Constructs a ClassNotFoundException with the specified detail message.

Parameters:
s - the detail message.

ClassNotFoundException sample code for java.lang.ClassNotFoundException(java.lang.String, java.lang.Throwable) definition code for java.lang.ClassNotFoundException(java.lang.String, java.lang.Throwable)

public ClassNotFoundException(String sample code for java.lang.String definition code for java.lang.String  s,
                              Throwable sample code for java.lang.Throwable definition code for java.lang.Throwable  ex)
Constructs a ClassNotFoundException with the specified detail message and optional exception that was raised while loading the class.

Parameters:
s - the detail message
ex - the exception that was raised while loading the class
Since:
1.2
Method Detail

getException sample code for java.lang.ClassNotFoundException.getException() definition code for java.lang.ClassNotFoundException.getException()

public Throwable sample code for java.lang.Throwable definition code for java.lang.Throwable  getException()
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() sample code for java.lang.Throwable.getCause() definition code for java.lang.Throwable.getCause() method is now the preferred means of obtaining this information.

Returns:
the Exception that was raised while loading a class
Since:
1.2

getCause sample code for java.lang.ClassNotFoundException.getCause() definition code for java.lang.ClassNotFoundException.getCause()

public Throwable sample code for java.lang.Throwable definition code for java.lang.Throwable  getCause()
Returns the cause of this exception (the exception that was raised if an error occurred while attempting to load the class; otherwise null).

Overrides:
getCause sample code for java.lang.Throwable.getCause() definition code for java.lang.Throwable.getCause() in class Throwable sample code for java.lang.Throwable definition code for java.lang.Throwable
Returns:
the cause of this exception.
Since:
1.4