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|BeanFactory||Interface to be implemented by objects that hold a number of bean definitions, each uniquely identified by a String name.|
|BeanFactoryAware||Interface to be implemented by beans that wish to be aware of their owning BeanFactory.|
|BeanNameAware||Interface to be implemented by beans that want to be aware of their bean name in a bean factory.|
|DisposableBean||Interface to be implemented by beans that want to release resources on destruction.|
|FactoryBean||Interface to be implemented by objects used within a BeanFactory that are themselves factories.|
|HierarchicalBeanFactory||Sub-interface implemented by bean factories that can be part of a hierarchy.|
|InitializingBean||Interface to be implemented by beans that need to react once all their properties have been set by a BeanFactory: for example, to perform custom initialization, or merely to check that all mandatory properties have been set.|
|ListableBeanFactory||Extension of the BeanFactory interface to be implemented by bean factories that can enumerate all their bean instances, rather than attempting bean lookup by name one by one as requested by clients.|
|BeanFactoryUtils||Convenience methods operating on bean factories, returning bean instances, names or counts taking into account the nesting hierarchy of a bean factory.|
|BeanCreationException||Exception thrown when a BeanFactory encounters an error when attempting to create a bean from a bean definition.|
|BeanDefinitionStoreException||Exception thrown when a BeanFactory encounters an internal error, and its definitions are invalid: for example, if an XML document containing bean definitions isn't well-formed.|
|BeanInitializationException||Exception that a bean implementation is suggested to throw if its own factory-aware initialization code fails.|
|BeanIsNotAFactoryException||Exception thrown when a bean is not a factory, but a user tries to get at the factory for the given bean name.|
|BeanNotOfRequiredTypeException||Thrown when a bean doesn't match the required type.|
|FactoryBeanCircularReferenceException||Exception thrown if a FactoryBean is involved in a circular reference.|
|NoSuchBeanDefinitionException||Exception thrown when a BeanFactory is asked for a bean instance name for which it cannot find a definition.|
|UnsatisfiedDependencyException||Exception thrown when a bean depends on other beans or simple properties that were not specified in the bean factory definition, although dependency checking was enabled.|
The core package implementing Spring's lightweight Inversion of Control (IoC) container.
Provides an alternative to the Singleton and Prototype design patterns, including a consistent approach to configuration management. Builds on the org.springframework.beans package.
This package and related packages are discussed in Chapter 11 of Expert One-On-One J2EE Design and Development by Rod Johnson (Wrox, 2002).