org.apache.commons.collections

Interface Closure

All Known Implementing Classes:

ChainedClosure, ExceptionClosure, ForClosure, IfClosure, NOPClosure, SwitchClosure, TransformerClosure, WhileClosure

public interface Closure

Defines a functor interface implemented by classes that do something.

A Closure represents a block of code which is executed from inside some block, function or iteration. It operates an input object.

Standard implementations of common closures are provided by ClosureUtils. These include method invokation and for/while loops.

Since:

Commons Collections 1.0

Version:

$Revision: 646777 $ $Date: 2008-04-10 13:33:15 +0100 (Thu, 10 Apr 2008) $

Author:

James Strachan, Nicola Ken Barozzi, Stephen Colebourne

Method Summary

Modifier and Type	Method and Description
void	execute(Object input) Performs an action on the specified input object.

Method Detail

execute

void execute(Object input)

Performs an action on the specified input object.

Parameters:

input - the input to execute on

Throws:

ClassCastException - (runtime) if the input is the wrong class

IllegalArgumentException - (runtime) if the input is invalid

FunctorException - (runtime) if any other error occurs