java.lang
Class ClassNotFoundException

java.lang.Object
  |
  +--java.lang.Throwable
        |
        +--java.lang.Exception
              |
              +--java.lang.ClassNotFoundException

public 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 specifed name could be found.

Since:

JDK1.0

Version:

1.13, 02/02/00

Author:

unascribed

See Also:

java.lang.Class#forName(java.lang.String), ClassLoader.findSystemClass(java.lang.String), ClassLoader.loadClass(java.lang.String, boolean)

Constructor Summary

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.

Method Summary

Throwable	getException() Returns the exception that was raised if an error occurred while attempting to load the class.
void	printStackTrace() Prints the stack backtrace.

Methods inherited from class java.lang.Throwable

fillInStackTrace, getLocalizedMessage, getMessage, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode

Constructor Detail

ClassNotFoundException

public ClassNotFoundException()

Constructs a ClassNotFoundException with no detail message.

ClassNotFoundException

public ClassNotFoundException(String s)

Constructs a ClassNotFoundException with the specified detail message.

Parameters:

s - the detail message.

ClassNotFoundException

public ClassNotFoundException(String s,
                              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

public Throwable getException()

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

Returns:

the Exception that was raised while loading a class

Since:

1.2

printStackTrace

public void printStackTrace()

Prints the stack backtrace. If an exception occurred during class loading it prints that exception's stack trace, or else prints the stack backtrace of this exception.

Overrides:

printStackTrace in class Throwable

See Also:

System.err