ClassNotFoundException

java.lang.Object
- java.lang.Throwable
- - java.lang.Exception
  - - java.lang.ReflectiveOperationException
    - - java.lang.ClassNotFoundException

All Implemented Interfaces:

Serializable, Modified
```
public class ClassNotFoundException
extends ReflectiveOperationException
```
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.
Since:

1.0

Author:

unascribed

See Also:

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

Field Summary
- Fields inherited from class java.lang.Throwable
  addr, message

Constructor Summary

Constructors
Constructor	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.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	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.

Methods inherited from class java.lang.Throwable
getMessage, printStackTrace, printStackTrace, toString

Methods inherited from class java.lang.Object
equals, 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.
    This method predates the general-purpose exception chaining facility.
    
    Returns:
    
    the Exception that was raised while loading a class
    
    Since:
    
    1.2
  - getCause
```
public 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).
    
    Returns:
    
    the cause of this exception.
    
    Since:
    
    1.4