ExceptionClosure

org.apache.commons.collections4.functors

Class ExceptionClosure<E>

java.lang.Object
- org.apache.commons.collections4.functors.ExceptionClosure<E>

All Implemented Interfaces:

Serializable, Closure<E>
```
public final class ExceptionClosure<E>
extends Object
implements Closure<E>, Serializable
```
Closure implementation that always throws an exception.

Since:

3.0

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
`static Closure`	`INSTANCE` Singleton predicate instance

Method Summary

All Methods

Static Methods

Instance Methods

Concrete Methods
Modifier and Type	Method and Description
`static <E> Closure<E>`	`exceptionClosure()` Factory returning the singleton instance.
`void`	`execute(E input)` Always throw an exception.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - INSTANCE
```
public static final Closure INSTANCE
```
    Singleton predicate instance
- Method Detail
  - exceptionClosure
```
public static <E> Closure<E> exceptionClosure()
```
    Factory returning the singleton instance.
    
    Type Parameters:
    
    E - the type that the closure acts on
    
    Returns:
    
    the singleton instance
    
    Since:
    
    3.1
  - execute
```
public void execute(E input)
```
    Always throw an exception.
    
    Specified by:
    
    execute in interface Closure<E>
    
    Parameters:
    
    input - the input object
    
    Throws:
    
    FunctorException - always