Spring Core 6.1.4 · org.springframework.util

Modifier and Type	Interface and Description
public interface	ErrorHandler A strategy for handling errors.
public interface	IdGenerator Contract for generating universally unique identifiers (`UUIDs`).
public interface	MultiValueMap< the key type K, the value element type V> Extension of the `Map` interface that stores multiple values.
public interface	PathMatcher Strategy interface for `String`-based path matching.
public interface	PropertiesPersister Strategy interface for persisting `java.util.Properties`, allowing for pluggable parsing strategies.
public interface	RouteMatcher Contract for matching routes to patterns.
public interface	StringValueResolver Simple strategy interface for resolving a String value.

Class Summary

Modifier and Type	Class and Description
public class	AlternativeJdkIdGenerator An `IdGenerator` that uses `SecureRandom` for the initial seed and `Random` thereafter, instead of calling `UUID#randomUUID()` every time as `JdkIdGenerator` does.
public class	AntPathMatcher `PathMatcher` implementation for Ant-style path patterns.
public abstract class	Assert Assertion utility class that assists in validating arguments.
public class	AutoPopulatingList< the element type E> Simple `List` wrapper class that allows for elements to be automatically populated as they are requested.
public abstract class	Base64Utils Deprecated for removal since 6.0.5. as of Spring Framework 6.0.5 in favor of `Base64`; scheduled for removal in 6.2 A simple utility class for Base64 encoding and decoding.
public abstract class	ClassUtils Miscellaneous `java.lang.Class` utility methods.
public abstract class	CollectionUtils Miscellaneous collection utility methods.
public class	CommonsLogWriter `java.io.Writer` adapter for a Commons Logging `Log`.
public class	CompositeIterator< the element type E> Composite iterator that combines multiple other iterators, as registered via `add(Iterator)`.
public abstract class	ConcurrencyThrottleSupport Support class for throttling concurrent access to a specific resource.
public class	ConcurrentLruCache< the type of the key used for cache retrieval K, the type of the cached values, does not allow null values V> Simple LRU (Least Recently Used) cache, bounded by a specified cache capacity.
public class	ConcurrentReferenceHashMap< the key type K, the value type V> A `ConcurrentHashMap` that uses `soft` or weak references for both `keys` and `values`.
public class	CustomizableThreadCreator Simple customizable helper class for creating new `Thread` instances.
public class	DefaultPropertiesPersister Default implementation of the `PropertiesPersister` interface.
public abstract class	DigestUtils Miscellaneous methods for calculating digests.
public class	ExceptionTypeFilter An `InstanceFilter` implementation that handles exception types.
public class	FastByteArrayOutputStream A speedy alternative to `java.io.ByteArrayOutputStream`.
public abstract class	FileCopyUtils Simple utility methods for file and stream copying.
public abstract class	FileSystemUtils Utility methods for working with the file system.
public class	InstanceFilter< the instance type T> A simple instance filter that checks if a given instance match based on a collection of includes and excludes element.
public class	InvalidMimeTypeException Exception thrown from `MimeTypeUtils#parseMimeType(String)` in case of encountering an invalid content type specification String.
public class	JdkIdGenerator An `IdGenerator` that calls `java.util.UUID#randomUUID()`.
public class	LinkedCaseInsensitiveMap< the value type V> `LinkedHashMap` variant that stores String keys in a case-insensitive manner, for example for key-based access in a results table.
public class	LinkedMultiValueMap< the key type K, the value element type V> Simple implementation of `MultiValueMap` that wraps a `LinkedHashMap`, storing multiple values in an `ArrayList`.
public class	MethodInvoker Helper class that allows for specifying a method to invoke in a declarative fashion, be it static or non-static.
public class	MimeType Represents a MIME Type, as originally defined in RFC 2046 and subsequently used in other Internet protocols including HTTP.
public abstract class	MimeTypeUtils Miscellaneous `MimeType` utility methods.
public class	MultiValueMapAdapter< the key type K, the value element type V> Adapts a given `Map` to the `MultiValueMap` contract.
public abstract class	NumberUtils Miscellaneous utility methods for number conversion and parsing.
public abstract class	ObjectUtils Miscellaneous object utility methods.
public abstract class	PatternMatchUtils Utility methods for simple pattern matching, in particular for Spring's typical `xxx`, `xxx`, `xxx`, and `xxx*yyy` pattern styles.
public class	PropertyPlaceholderHelper Utility class for working with Strings that have placeholder values in them.
public abstract class	ReflectionUtils Simple utility class for working with the reflection API and handling reflection exceptions.
public class	ResizableByteArrayOutputStream An extension of `java.io.ByteArrayOutputStream` that: has public `org.springframework.util.ResizableByteArrayOutputStream#grow(int)` and `org.springframework.util.ResizableByteArrayOutputStream#resize(int)` methods to get more control over the size of the internal buffer has a higher initial capacity (256) by default
public abstract class	ResourceUtils Utility methods for resolving resource locations to files in the file system.
public abstract class	SerializationUtils Static utilities for serialization and deserialization using Java Object Serialization.
public class	SimpleIdGenerator A simple `IdGenerator` that starts at 1, increments up to `Long#MAX_VALUE`, and then rolls over.
public class	SimpleRouteMatcher `RouteMatcher` that delegates to a `PathMatcher`.
public class	StopWatch Simple stop watch, allowing for timing of a number of tasks, exposing total running time and running time for each named task.
public abstract class	StreamUtils Simple utility methods for dealing with streams.
public abstract class	StringUtils Miscellaneous `String` utility methods.
public abstract class	SystemPropertyUtils Helper class for resolving placeholders in texts.
public abstract class	TypeUtils Utility to work with generic type parameters.
pack-priv class	UnmodifiableMultiValueMap< the key type K, the value element type V> Unmodifiable wrapper for `MultiValueMap`.
pack-priv abstract class	UpdateMessageDigestInputStream Extension of `java.io.InputStream` that allows for optimized implementations of message digesting.

Package org.springframework.util

Interface Summary

Class Summary