ClassNotFoundExceptionpublic class ClassNotFoundException extends Exception 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 {@link #getException()} method is
now known as the cause, and may be accessed via the {@link
Throwable#getCause()} method, as well as the aforementioned "legacy method." |
| Fields Summary |
|---|
| private static final long | serialVersionUIDuse serialVersionUID from JDK 1.1.X for interoperability | | private Throwable | exThis field holds the exception ex if the
ClassNotFoundException(String s, Throwable ex) constructor was
used to instantiate the object |
| Constructors Summary |
|---|
public ClassNotFoundException()Constructs a ClassNotFoundException with no detail message.
super((Throwable)null); // Disallow initCause
| public ClassNotFoundException(String s)Constructs a ClassNotFoundException with the
specified detail message.
super(s, null); // Disallow initCause
| public ClassNotFoundException(String s, Throwable ex)Constructs a ClassNotFoundException with the
specified detail message and optional exception that was
raised while loading the class.
super(s, null); // Disallow initCause
this.ex = ex;
|
| Methods Summary |
|---|
| public 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).
return ex;
| | public 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 {@link Throwable#getCause()} method is now the preferred means of
obtaining this information.
return ex;
|
|
