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See:
          Description
| Interface Summary | |
|---|---|
| AliasRegistry | Common interface for managing aliases. | 
| AttributeAccessor | Interface defining a generic contract for attaching and accessing metadata to/from arbitrary objects. | 
| ConcurrentMap | Common interface for a concurrent Map, as exposed by CollectionFactory.createConcurrentMap(int). | 
| ControlFlow | Interface to be implemented by objects that can return information about the current call stack. | 
| ErrorCoded | Interface that can be implemented by exceptions etc that are error coded. | 
| InfrastructureProxy | Interface to be implemented by transparent resource proxies that need to be considered as equal to the underlying resource, for example for consistent lookup key comparisons. | 
| Ordered | Interface that can be implemented by objects that should be orderable, for example in a Collection. | 
| ParameterNameDiscoverer | Interface to discover parameter names for methods and constructors. | 
| PriorityOrdered | Extension of the Orderedinterface, expressing a 'priority'
 ordering: Order values expressed by PriorityOrdered objects always
 apply before order values of 'plain' Ordered values. | 
| SmartClassLoader | Interface to be implemented by a reloading-aware ClassLoader (e.g. a Groovy-based ClassLoader). | 
| Class Summary | |
|---|---|
| AttributeAccessorSupport | Support class for AttributeAccessors, providing
 a base implementation of all methods. | 
| BridgeMethodResolver | Helper for resolving synthetic bridge Methodsto theMethodbeing bridged. | 
| CollectionFactory | Factory for collections, being aware of Commons Collection 3.x's extended collections as well as of JDK 1.5+ concurrent collections and backport-concurrent collections. | 
| ConfigurableObjectInputStream | Special ObjectInputStream subclass that resolves class names against a specific ClassLoader. | 
| Constants | This class can be used to parse other classes containing constant definitions in public static final members. | 
| ControlFlowFactory | Static factory to conceal the automatic choice of the ControlFlow implementation class. | 
| Conventions | Provides methods to support various naming and other conventions used throughout the framework. | 
| DecoratingClassLoader | Base class for decorating ClassLoaders such as OverridingClassLoaderandShadowingClassLoader,
 providing common handling of excluded packages and classes. | 
| GenericCollectionTypeResolver | Helper class for determining element types of collections and maps. | 
| GenericTypeResolver | Helper class for resolving generic types against type variables. | 
| JdkVersion | Internal helper class used to find the Java/JDK version that Spring is operating on, to allow for automatically adapting to the present platform's capabilities. | 
| LocalVariableTableParameterNameDiscoverer | Implementation of ParameterNameDiscovererthat uses the LocalVariableTable
 information in the method attributes to discover parameter names. | 
| MethodParameter | Helper class that encapsulates the specification of a method parameter, i.e. | 
| NamedInheritableThreadLocal | InheritableThreadLocalsubclass that exposes a specified name
 asNamedInheritableThreadLocal.toString()result (allowing for introspection). | 
| NamedThreadLocal | ThreadLocalsubclass that exposes a specified name
 asNamedThreadLocal.toString()result (allowing for introspection). | 
| NestedExceptionUtils | Helper class for implementing exception classes which are capable of holding nested exceptions. | 
| OrderComparator | Comparatorimplementation forOrderedobjects,
 sorting by order value ascending (resp. by priority descending). | 
| OverridingClassLoader | ClassLoaderthat does not always delegate to the
 parent loader, as normal class loaders do. | 
| PrioritizedParameterNameDiscoverer | ParameterNameDiscoverer implementation that tries several ParameterNameDiscoverers in succession. | 
| ReflectiveVisitorHelper | Deprecated. as of Spring 2.5, to be removed in Spring 3.0 | 
| SimpleAliasRegistry | Simple implementation of the AliasRegistryinterface. | 
| SpringVersion | Class that exposes the Spring version. | 
| Exception Summary | |
|---|---|
| ConstantException | Exception thrown when the Constantsclass is asked for
 an invalid constant name. | 
| NestedCheckedException | Handy class for wrapping checked Exceptionswith a root cause. | 
| NestedIOException | Subclass of IOException that properly handles a root cause, exposing the root cause just like NestedChecked/RuntimeException does. | 
| NestedRuntimeException | Handy class for wrapping runtime Exceptionswith a root cause. | 
Provides basic classes for exception handling and version detection, and other core helpers that are not specific to any part of the framework.
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