| Name | Description | Type | Package | Framework |
| AlternativeJdkIdGenerator | An IdGenerator that uses SecureRandom for the initial seed andRandom thereafter, instead of calling UUID. | Class | org.springframework.util | Spring MVC |
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| AntPathMatcher | PathMatcher implementation for Ant-style path patterns. | Class | org.springframework.util | Spring MVC |
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| AntPathMatcher .AntPathStringMatcher | Tests whether or not a string matches against a pattern via a Pattern. | Class | org.springframework.util.AntPathMatcher | Spring MVC |
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| AntPathMatcher .AntPatternComparator | The default Comparator implementation returned byAntPathMatcher. | Class | org.springframework.util.AntPathMatcher | Spring MVC |
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| Assert | Assertion utility class that assists in validating arguments. | Class | org.springframework.util | Spring MVC |
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| AutoPopulatingList | Simple List wrapper class that allows for elements to beautomatically populated as they are requested. | Class | org.springframework.util | Spring MVC |
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| AutoPopulatingList .ElementFactory | Factory interface for creating elements for an index-based accessdata structure such as a List. | Interface | org.springframework.util.AutoPopulatingList | Spring MVC |
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| AutoPopulatingList .ElementInstantiationException | Exception to be thrown from ElementFactory. | Class | org.springframework.util.AutoPopulatingList | Spring MVC |
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| BackOff | Provide a BackOffExecution that indicates the rate at whichan operation should be retried. | Interface | org.springframework.util.backoff | Spring MVC |
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| BackOffExecution | Represent a particular back-off execution. | Interface | org.springframework.util.backoff | Spring MVC |
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| Base64Utils | A simple utility class for Base64 encoding and decoding. | Class | org.springframework.util | Spring MVC |
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| BooleanComparator | A Comparator for Boolean objects that can sort either true or false first. | Class | org.springframework.util.comparator | Spring MVC |
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| ClassUtils | Miscellaneous class utility methods. | Class | org.springframework.util | Spring MVC |
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| CollectionUtils | Miscellaneous collection utility methods. | Class | org.springframework.util | Spring MVC |
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| CommonsLogWriter | java. | Class | org.springframework.util | Spring MVC |
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| ComparableComparator | Comparator that adapts Comparables to the Comparator interface. | Class | org.springframework.util.comparator | Spring MVC |
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| CompletableToListenableFutureAdapter | Adapts a CompletableFuture into a ListenableFuture. | Class | org.springframework.util.concurrent | Spring MVC |
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| CompositeIterator | Composite iterator that combines multiple other iterators,as registered via add(Iterator). | Class | org.springframework.util | Spring MVC |
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| CompoundComparator | A comparator that chains a sequence of one or more more Comparators. | Class | org.springframework.util.comparator | Spring MVC |
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| ConcurrencyThrottleSupport | Support class for throttling concurrent access to a specific resource. | Class | org.springframework.util | Spring MVC |
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| ConcurrentReferenceHashMap | A ConcurrentHashMap that uses soft orweak references for both keys and values. | Class | org.springframework.util | Spring MVC |
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| ConcurrentReferenceHashMap .Entry | | Class | org.springframework.util.ConcurrentReferenceHashMap | Spring MVC |
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| ConcurrentReferenceHashMap .Reference | A reference to an ConcurrentReferenceHashMap. | Interface | org.springframework.util.ConcurrentReferenceHashMap | Spring MVC |
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| ConcurrentReferenceHashMap .ReferenceType | Various reference types supported by this map. | Class | org.springframework.util.ConcurrentReferenceHashMap | Spring MVC |
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| ConcurrentReferenceHashMap .Restructure | The types of restructuring that can be performed. | Class | org.springframework.util.ConcurrentReferenceHashMap | Spring MVC |
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| CustomizableThreadCreator | Simple customizable helper class for creating new Thread instances. | Class | org.springframework.util | Spring MVC |
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| DefaultPropertiesPersister | Default implementation of the PropertiesPersister interface. | Class | org.springframework.util | Spring MVC |
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| DigestUtils | Miscellaneous methods for calculating digests. | Class | org.springframework.util | Spring MVC |
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| DomUtils | Convenience methods for working with the DOM API,in particular for working with DOM Nodes and DOM Elements. | Class | org.springframework.util.xml | Spring MVC |
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| ErrorHandler | A strategy for handling errors. | Interface | org.springframework.util | Spring MVC |
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| ExceptionTypeFilter | An InstanceFilter implementation that handles exception types. | Class | org.springframework.util | Spring MVC |
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| ExponentialBackOff | retry attempt. | Class | org.springframework.util.backoff | Spring MVC |
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| FailureCallback | Defines the contract for failure callbacks that accept the result of aSince:4. | Interface | org.springframework.util.concurrent | Spring MVC |
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| FastByteArrayOutputStream | A speedy alternative to ByteArrayOutputStream. | Class | org.springframework.util | Spring MVC |
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| FileCopyUtils | Simple utility methods for file and stream copying. | Class | org.springframework.util | Spring MVC |
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| FileSystemUtils | Utility methods for working with the file system. | Class | org.springframework.util | Spring MVC |
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| FixedBackOff | A simple BackOff implementation that provides a fixed intervalbetween two attempts and a maximum number of retries. | Class | org.springframework.util.backoff | Spring MVC |
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| FutureAdapter | Abstract class that adapts a Future parameterized over S into a Future parameterized over T. | Class | org.springframework.util.concurrent | Spring MVC |
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| IdGenerator | Contract for generating universally unique identifiers (UUIDs). | Interface | org.springframework.util | Spring MVC |
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| InstanceComparator | Compares objects based on an arbitrary class order. | Class | org.springframework.util.comparator | Spring MVC |
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| InstanceFilter | A simple instance filter that checks if a given instance match based ona collection of includes and excludes element. | Class | org.springframework.util | Spring MVC |
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| InvalidMimeTypeException | Exception thrown from MimeTypeUtils. | Class | org.springframework.util | Spring MVC |
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| InvertibleComparator | A decorator for a comparator, with an ascending flag denotingwhether comparison results should be treated in forward (standard | Class | org.springframework.util.comparator | Spring MVC |
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| JdkIdGenerator | An IdGenerator that calls UUID. | Class | org.springframework.util | Spring MVC |
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| LinkedCaseInsensitiveMap | LinkedHashMap variant that stores String keys in a case-insensitivemanner, for example for key-based access in a results table. | Class | org.springframework.util | Spring MVC |
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| LinkedMultiValueMap | Simple implementation of MultiValueMap that wraps a LinkedHashMap,storing multiple values in a LinkedList. | Class | org.springframework.util | Spring MVC |
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| ListenableFuture | callbacks. | Interface | org.springframework.util.concurrent | Spring MVC |
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| ListenableFutureAdapter | Abstract class that adapts a ListenableFuture parameterized over S into aListenableFuture parameterized over T. | Class | org.springframework.util.concurrent | Spring MVC |
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| ListenableFutureCallback | Defines the contract for callbacks that accept the result of aSince:4. | Interface | org.springframework.util.concurrent | Spring MVC |
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| ListenableFutureCallbackRegistry | Registry for ListenableFutureCallback instances. | Class | org.springframework.util.concurrent | Spring MVC |
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| ListenableFutureTask | Extension of FutureTask that implements ListenableFuture. | Class | org.springframework.util.concurrent | Spring MVC |
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| Log4jConfigurer | Convenience class that features simple methods for custom log4j configuration. | Class | org.springframework.util | Spring MVC |
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| MethodInvoker | Helper class that allows for specifying a method to invoke in a declarativefashion, be it static or non-static. | Class | org.springframework.util | Spring MVC |
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| MimeType | Represents a MIME Type, as originally defined in RFC 2046 and subsequently used inother Internet protocols including HTTP. | Class | org.springframework.util | Spring MVC |
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| MimeType .SpecificityComparator | | Class | org.springframework.util.MimeType | Spring MVC |
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| MimeTypeUtils | Miscellaneous MimeType utility methods. | Class | org.springframework.util | Spring MVC |
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| MultiValueMap | Extension of the Map interface that stores multiple values. | Interface | org.springframework.util | Spring MVC |
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| NullSafeComparator | A Comparator that will safely compare nulls to be lower or higher thanother objects. | Class | org.springframework.util.comparator | Spring MVC |
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| NumberUtils | Miscellaneous utility methods for number conversion and parsing. | Class | org.springframework.util | Spring MVC |
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| ObjectUtils | Miscellaneous object utility methods. | Class | org.springframework.util | Spring MVC |
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| PathMatcher | Strategy interface for String-based path matching. | Interface | org.springframework.util | Spring MVC |
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| PatternMatchUtils | Utility methods for simple pattern matching, in particular forSpring's typical xxx*, *xxx and *xxx* pattern styles. | Class | org.springframework.util | Spring MVC |
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| PropertiesPersister | Strategy interface for persisting java. | Interface | org.springframework.util | Spring MVC |
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| PropertyPlaceholderHelper | Utility class for working with Strings that have placeholder values in them. | Class | org.springframework.util | Spring MVC |
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| PropertyPlaceholderHelper .PlaceholderResolver | Strategy interface used to resolve replacement values for placeholders contained in Strings. | Interface | org.springframework.util.PropertyPlaceholderHelper | Spring MVC |
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| ReflectionUtils | Simple utility class for working with the reflection API and handlingreflection exceptions. | Class | org.springframework.util | Spring MVC |
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| ReflectionUtils .FieldCallback | Callback interface invoked on each field in the hierarchy. | Interface | org.springframework.util.ReflectionUtils | Spring MVC |
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| ReflectionUtils .FieldFilter | Callback optionally used to filter fields to be operated on by a field callback. | Interface | org.springframework.util.ReflectionUtils | Spring MVC |
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| ReflectionUtils .MethodCallback | Action to take on each method. | Interface | org.springframework.util.ReflectionUtils | Spring MVC |
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| ReflectionUtils .MethodFilter | Callback optionally used to filter methods to be operated on by a method callback. | Interface | org.springframework.util.ReflectionUtils | Spring MVC |
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| ResizableByteArrayOutputStream | An extension of ByteArrayOutputStream that:has public grow(int) | Class | org.springframework.util | Spring MVC |
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| ResourceUtils | Utility methods for resolving resource locations to files in thefile system. | Class | org.springframework.util | Spring MVC |
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| SerializationUtils | Static utilities for serialization and deserialization. | Class | org.springframework.util | Spring MVC |
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| SettableListenableFuture | whose value can be set via set(Object) orsetException(Throwable). | Class | org.springframework.util.concurrent | Spring MVC |
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| SimpleIdGenerator | A simple IdGenerator that starts at 1 and increments by 1 with each call. | Class | org.springframework.util | Spring MVC |
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| SimpleNamespaceContext | Simple javax. | Class | org.springframework.util.xml | Spring MVC |
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| SimpleSaxErrorHandler | Simple org. | Class | org.springframework.util.xml | Spring MVC |
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| SimpleTransformErrorListener | Simple javax. | Class | org.springframework.util.xml | Spring MVC |
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| SocketUtils | | Class | org.springframework.util | Spring MVC |
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| StaxUtils | Convenience methods for working with the StAX API. | Class | org.springframework.util.xml | Spring MVC |
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| StopWatch | Simple stop watch, allowing for timing of a number of tasks,exposing total running time and running time for each named task. | Class | org.springframework.util | Spring MVC |
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| StopWatch .TaskInfo | Inner class to hold data about one task executed within the stop watch. | Class | org.springframework.util.StopWatch | Spring MVC |
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| StreamUtils | Simple utility methods for dealing with streams. | Class | org.springframework.util | Spring MVC |
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| StringUtils | Miscellaneous String utility methods. | Class | org.springframework.util | Spring MVC |
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| StringValueResolver | Simple strategy interface for resolving a String value. | Interface | org.springframework.util | Spring MVC |
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| SuccessCallback | Defines the contract for success callbacks that accept the result of aSince:4. | Interface | org.springframework.util.concurrent | Spring MVC |
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| SystemPropertyUtils | Helper class for resolving placeholders in texts. | Class | org.springframework.util | Spring MVC |
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| TransformerUtils | Contains common behavior relating to Transformers, and thejavax. | Class | org.springframework.util.xml | Spring MVC |
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| TypeUtils | Utility to work with Java 5 generic type parameters. | Class | org.springframework.util | Spring MVC |
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| WeakReferenceMonitor | Track references to arbitrary objects using proxy and weak references. | Class | org.springframework.util | Spring MVC |
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| WeakReferenceMonitor .ReleaseListener | Listener that is notified when the handle is being released. | Interface | org.springframework.util.WeakReferenceMonitor | Spring MVC |
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| XmlValidationModeDetector | Detects whether an XML stream is using DTD- or XSD-based validation. | Class | org.springframework.util.xml | Spring MVC |