public class ClassNotFoundException extends ReflectiveOperationException
forName
method in class Class
.
findSystemClass
method in class
ClassLoader
.
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."
Class.forName(java.lang.String)
,
ClassLoader.findSystemClass(java.lang.String)
,
ClassLoader.loadClass(java.lang.String, boolean)
,
Serialized FormConstructor and Description |
---|
ClassNotFoundException()
Constructs a
ClassNotFoundException with no detail message. |
ClassNotFoundException(String s)
Constructs a
ClassNotFoundException with the
specified detail message. |
ClassNotFoundException(String s,
Throwable ex)
Constructs a
ClassNotFoundException with the
specified detail message and optional exception that was
raised while loading the class. |
Modifier and Type | Method and Description |
---|---|
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).
|
Throwable |
getException()
Returns the exception that was raised if an error occurred while
attempting to load the class.
|
addSuppressed, fillInStackTrace, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString
public ClassNotFoundException()
ClassNotFoundException
with no detail message.public ClassNotFoundException(String s)
ClassNotFoundException
with the
specified detail message.s
- the detail message.public ClassNotFoundException(String s, Throwable ex)
ClassNotFoundException
with the
specified detail message and optional exception that was
raised while loading the class.s
- the detail messageex
- the exception that was raised while loading the classpublic Throwable getException()
This method predates the general-purpose exception chaining facility.
The Throwable.getCause()
method is now the preferred means of
obtaining this information.
Exception
that was raised while loading a class