# Package org.apache.catalina.util

package org.apache.catalina.util

Related Packages
Package
Description
org.apache.catalina
Class
Description
CharsetMapper
Utility class that attempts to map from a Locale to the corresponding character set to be used for interpreting input text (or generating output text) when the Content-Type header does not include one.
ContextName
Utility class to manage context names so there is one place where the conversions between baseName, path and version take place.
CustomObjectInputStream
Custom subclass of `ObjectInputStream` that loads from the class loader for this web application.
DOMWriter
A DOM writer optimised for use by WebDAV.
ErrorPageSupport
Provides support for tracking per exception type and per HTTP status code error pages.
ExactRateLimiter
A RateLimiter that compromises efficiency for accuracy in order to provide exact rate limiting.
FastRateLimiter
A RateLimiter that compromises accuracy for speed in order to provide maximum throughput.
FilterUtil
General purpose utility methods related to filters and filter processing.
Introspection
Provides introspection utilities that either require knowledge of Tomcat internals or are solely used by Tomcat internals.
IOTools
Contains commonly needed I/O-related methods.
LifecycleBase
Base implementation of the `Lifecycle` interface that implements the state transition rules for `Lifecycle.start()` and `Lifecycle.stop()`
LifecycleMBeanBase
Base implementation of MBean registration for lifecycle components.
NetMask
A class representing a CIDR netmask.
NetMaskSet
This class maintains a Set of NetMask objects and allows to check if a given IP address is matched by any of the NetMasks, making it easy to create Allow and Deny lists of CIDR networks and hosts.
ParameterMap<K,V>
Implementation of java.util.Map that includes a `locked` property.
RateLimiter
Defines the contract for a rate limiter that tracks and limits the number of requests per time window for a given identifier.
RateLimiterBase
Base implementation of `RateLimiter`, provides runtime data maintenance mechanism monitor.
RequestUtil
General purpose request parsing and encoding utility methods.
ResourceSet<T>
Extended implementation of HashSet that includes a `locked` property.
ServerInfo
Simple utility module to make it easy to plug in the server identifier when integrating Tomcat.
SessionConfig
Utility class for managing session configuration.
SessionIdGeneratorBase
Base implementation of `SessionIdGenerator` that manages a pool of `SecureRandom` instances for generating session identifiers.
StandardSessionIdGenerator
Standard implementation of `SessionIdGenerator` that generates session identifiers using a pool of `SecureRandom` instances.
Strftime
Converts dates to strings using the same format specifiers as strftime Notes: This does not mimic strftime perfectly.
StringUtil
Utility methods for string manipulation in Catalina.
TimeBucketCounter
A fast counter that optimizes efficiency at the expense of approximate bucket indexing.
TimeBucketCounterBase
This class maintains a thread safe hash map that has timestamp-based buckets followed by a string for a key, and a counter for an integer value.
TLSUtil
Utility methods for TLS-related operations.
TomcatCSS
Provides the default Tomcat CSS styles.
ToStringUtil
Utility class used to help generate return values for calls to `Object.toString()`.
URLEncoder
This class is very similar to the java.net.URLEncoder class.
XMLWriter
XMLWriter helper class. writeText is the only method in the class doing XML escaping.