@NonNullApi @NonNullFields

Package org.springframework.core

Provides basic classes for exception handling and version detection, and other core helpers that are not specific to any part of the framework.

See: Description

Interface Summary

Interface	Description
AliasRegistry	Common interface for managing aliases.
AttributeAccessor	Interface defining a generic contract for attaching and accessing metadata to/from arbitrary objects.
DecoratingProxy	Interface to be implemented by decorating proxies, in particular Spring AOP proxies but potentially also custom proxies with decorator semantics.
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.
MethodIntrospector.MetadataLookup<T>	A callback interface for metadata lookup on a given method.
OrderComparator.OrderSourceProvider	Strategy interface to provide an order source for a given object.
Ordered	Ordered is an 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 Ordered interface, expressing a priority ordering: PriorityOrdered objects are always applied before plain Ordered objects regardless of their order values.
ResolvableTypeProvider	Any object can implement this interface to provide its actual ResolvableType.
SmartClassLoader	Interface to be implemented by a reloading-aware ClassLoader (e.g.

Class Summary

Class	Description
AttributeAccessorSupport	Support class for AttributeAccessors, providing a base implementation of all methods.
BridgeMethodResolver	Helper for resolving synthetic bridge Methods to the Method being bridged.
CollectionFactory	Factory for collections that is aware of common Java and Spring collection types.
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.
Conventions	Provides methods to support various naming and other conventions used throughout the framework.
DecoratingClassLoader	Base class for decorating ClassLoaders such as OverridingClassLoader and ShadowingClassLoader, providing common handling of excluded packages and classes.
DefaultParameterNameDiscoverer	Default implementation of the ParameterNameDiscoverer strategy interface, using the Java 8 standard reflection mechanism (if available), and falling back to the ASM-based LocalVariableTableParameterNameDiscoverer for checking debug information in the class file.
ExceptionDepthComparator	Comparator capable of sorting exceptions based on their depth from the thrown exception type.
GenericTypeResolver	Helper class for resolving generic types against type variables.
KotlinDetector	A common delegate for detecting Kotlin's presence and for identifying Kotlin types.
KotlinReflectionParameterNameDiscoverer	ParameterNameDiscoverer implementation which uses Kotlin's reflection facilities for introspecting parameter names.
LocalVariableTableParameterNameDiscoverer	Implementation of ParameterNameDiscoverer that uses the LocalVariableTable information in the method attributes to discover parameter names.
MethodClassKey	A common key class for a method against a specific target class, including MethodClassKey.toString() representation and Comparable support (as suggested for custom HashMap keys as of Java 8).
MethodIntrospector	Defines the algorithm for searching for metadata-associated methods exhaustively including interfaces and parent classes while also dealing with parameterized methods as well as common scenarios encountered with interface and class-based proxies.
MethodParameter	Helper class that encapsulates the specification of a method parameter, i.e.
NamedInheritableThreadLocal<T>	InheritableThreadLocal subclass that exposes a specified name as NamedInheritableThreadLocal.toString() result (allowing for introspection).
NamedThreadLocal<T>	ThreadLocal subclass that exposes a specified name as NamedThreadLocal.toString() result (allowing for introspection).
NestedExceptionUtils	Helper class for implementing exception classes which are capable of holding nested exceptions.
OrderComparator	Comparator implementation for Ordered objects, sorting by order value ascending, respectively by priority descending.
OverridingClassLoader	ClassLoader that does not always delegate to the parent loader as normal class loaders do.
ParameterizedTypeReference<T>	The purpose of this class is to enable capturing and passing a generic Type.
PrioritizedParameterNameDiscoverer	ParameterNameDiscoverer implementation that tries several discoverer delegates in succession.
ReactiveAdapter	Adapter for a Reactive Streams Publisher to and from an async/reactive type such as CompletableFuture, RxJava Observable, and others.
ReactiveAdapterRegistry	A registry of adapters to adapt Reactive Streams Publisher to/from various async/reactive types such as CompletableFuture, RxJava Observable, and others.
ReactiveAdapterRegistry.SpringCoreBlockHoundIntegration	BlockHoundIntegration for spring-core classes.
ReactiveTypeDescriptor	Describes the semantics of a reactive type including boolean checks for ReactiveTypeDescriptor.isMultiValue(), ReactiveTypeDescriptor.isNoValue(), and ReactiveTypeDescriptor.supportsEmpty().
ResolvableType	Encapsulates a Java Type, providing access to supertypes, interfaces, and generic parameters along with the ability to ultimately resolve to a Class.
SimpleAliasRegistry	Simple implementation of the AliasRegistry interface.
SpringProperties	Static holder for local Spring properties, i.e.
SpringVersion	Class that exposes the Spring version.
StandardReflectionParameterNameDiscoverer	ParameterNameDiscoverer implementation which uses JDK 8's reflection facilities for introspecting parameter names (based on the "-parameters" compiler flag).

Exception Summary

Exception	Description
Constants.ConstantException	Exception thrown when the Constants class is asked for an invalid constant name.
NestedCheckedException	Handy class for wrapping checked Exceptions with 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 Exceptions with a root cause.

Package org.springframework.core Description

Provides basic classes for exception handling and version detection, and other core helpers that are not specific to any part of the framework.