ClassNotFoundException (Java SE 10 & JDK 10 )

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

All Implemented Interfaces:

Serializable
```
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.
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."
Since:

1.0

See Also:

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

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 declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods declared in class java.lang.Throwable
addSuppressed, fillInStackTrace, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

- 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. The 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
```
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).
    
    Overrides:
    
    getCause in class Throwable
    
    Returns:
    
    the cause of this exception.
    
    Since:
    
    1.4

Constructor Summary

Method Summary

Methods declared in class java.lang.Object

Methods declared in class java.lang.Throwable

Constructor Detail

ClassNotFoundException

ClassNotFoundException

ClassNotFoundException

Method Detail

getException

getCause