# Apache Tomcat® 10.1.39 API

Packages
Package
Description
org.apache.catalina
org.apache.catalina.ant
This package contains a set of `Task` implementations for Ant (version 1.6.x or later) that can be used to interact with the Manager application to deploy, undeploy, list, reload, start and stop web applications from a running instance of Tomcat.
org.apache.catalina.ant.jmx
This package contains a set of `JMX Task` implementations for Ant (version 1.6 or later) that can be used to interact with the Remote JMX JSR 160 RMI Adaptor to get/set attributes, invoke MBean operations and query for Mbeans inside a running instance of Tomcat.
org.apache.catalina.authenticator
This package contains `Authenticator` implementations for the various supported authentication methods (BASIC, DIGEST, and FORM).
org.apache.catalina.authenticator.jaspic
org.apache.catalina.connector
org.apache.catalina.core
org.apache.catalina.deploy
org.apache.catalina.filters
org.apache.catalina.ha
This package contains code for Clustering, the base class of a Cluster is `org.apache.catalina.Cluster` implementations of this class is done when implementing a new Cluster protocol
org.apache.catalina.ha.authenticator
org.apache.catalina.ha.backend
org.apache.catalina.ha.context
org.apache.catalina.ha.deploy
org.apache.catalina.ha.session
org.apache.catalina.ha.tcp
org.apache.catalina.loader
org.apache.catalina.manager
org.apache.catalina.manager.host
org.apache.catalina.manager.util
org.apache.catalina.mapper
org.apache.catalina.mbeans
org.apache.catalina.realm
This package contains `Realm` implementations for the various supported realm technologies for authenticating users and identifying their associated roles.
org.apache.catalina.security
org.apache.catalina.servlets
This package contains `Servlets` that implement some of the standard functionality provided by the Catalina servlet container.
org.apache.catalina.session
This package contains the standard `Manager` and `Session` implementations that represent the collection of active sessions and the individual sessions themselves, respectively, that are associated with a `Context`.
org.apache.catalina.ssi
This package contains code that is used by the SsiInvoker.
org.apache.catalina.startup
org.apache.catalina.storeconfig
org.apache.catalina.tribes
QuickStart
org.apache.catalina.tribes.group
org.apache.catalina.tribes.group.interceptors
org.apache.catalina.tribes.io
org.apache.catalina.tribes.jmx
org.apache.catalina.tribes.membership
org.apache.catalina.tribes.membership.cloud
org.apache.catalina.tribes.tipis
org.apache.catalina.tribes.transport
org.apache.catalina.tribes.transport.nio
org.apache.catalina.tribes.util
org.apache.catalina.users
org.apache.catalina.util
org.apache.catalina.valves
This package contains a variety of small Valve implementations that do not warrant being packaged separately.
org.apache.catalina.valves.rewrite
org.apache.catalina.webresources
org.apache.catalina.webresources.war
org.apache.coyote
org.apache.coyote.ajp
org.apache.coyote.http11
org.apache.coyote.http11.filters
org.apache.coyote.http11.upgrade
org.apache.coyote.http2
org.apache.el
org.apache.el.lang
org.apache.el.stream
org.apache.el.util
org.apache.jasper
org.apache.jasper.compiler
org.apache.jasper.compiler.tagplugin
org.apache.jasper.el
org.apache.jasper.optimizations
org.apache.jasper.runtime
org.apache.jasper.security
org.apache.jasper.servlet
org.apache.jasper.tagplugins.jstl
org.apache.jasper.tagplugins.jstl.core
org.apache.jasper.util
org.apache.juli
org.apache.juli.logging
Overview
org.apache.naming
This package contains a memory based naming service provider.
org.apache.naming.factory
This package contains object factories used by the naming service.
org.apache.naming.factory.webservices
org.apache.naming.java
This package contains the URL context factory for the "java" namespace.
org.apache.tomcat
org.apache.tomcat.buildutil
org.apache.tomcat.buildutil.translate
org.apache.tomcat.dbcp.dbcp2
Database Connection Pool API.
org.apache.tomcat.dbcp.dbcp2.cpdsadapter
This package contains one public class which is a `ConnectionPoolDataSource` (CPDS) implementation that can be used to adapt older `Driver` based JDBC implementations.
org.apache.tomcat.dbcp.dbcp2.datasources
This package contains two DataSources: `PerUserPoolDataSource` and `SharedPoolDataSource` which provide a database connection pool.
org.apache.tomcat.dbcp.dbcp2.managed
This package provides support for pooling of ManagedConnections.
org.apache.tomcat.dbcp.pool2
org.apache.tomcat.dbcp.pool2.impl
org.apache.tomcat.jdbc.naming
org.apache.tomcat.jdbc.pool
org.apache.tomcat.jdbc.pool.interceptor
org.apache.tomcat.jdbc.pool.jmx
org.apache.tomcat.jni
org.apache.tomcat.util
org.apache.tomcat.util.bcel
Basic classes for the Apache Byte Code Engineering Library (BCEL) and constants defined by the JVM specification.
org.apache.tomcat.util.bcel.classfile
Classes that describe the structure of a Java class file and a class file parser.
org.apache.tomcat.util.buf
Buffers and Encodings
org.apache.tomcat.util.codec.binary
Base64 String encoding and decoding.
org.apache.tomcat.util.collections
org.apache.tomcat.util.compat
org.apache.tomcat.util.descriptor
org.apache.tomcat.util.descriptor.tagplugin
org.apache.tomcat.util.descriptor.tld
Package containing a Java model of the XML for a Tag Library Descriptor.
org.apache.tomcat.util.descriptor.web
This package contains Java objects that represent complex data structures from the web application deployment descriptor file (`web.xml`).
org.apache.tomcat.util.digester
The Digester package provides for rules-based processing of arbitrary XML documents.
org.apache.tomcat.util.file
This package contains utility classes for file handling.
org.apache.tomcat.util.http
Special utils for handling HTTP-specific entities - headers, parameters, cookies, etc.
org.apache.tomcat.util.http.fileupload
NOTE: This code has been copied from commons-fileupload trunk 1.3 and commons-io 1.4 and package renamed to avoid clashes with any web apps that may wish to use these libraries.
org.apache.tomcat.util.http.fileupload.disk
A disk-based implementation of the `FileItem` interface.
org.apache.tomcat.util.http.fileupload.impl
Implementations and exceptions utils.
org.apache.tomcat.util.http.fileupload.servlet
An implementation of `FileUpload` for use in servlets conforming to JSR 53.
org.apache.tomcat.util.http.fileupload.util
This package contains various IO related utility classes or methods, which are basically reusable and not necessarily restricted to the scope of a file upload.
org.apache.tomcat.util.http.fileupload.util.mime
MIME decoder implementation, imported and retailed from Apache Geronimo.
org.apache.tomcat.util.http.parser
org.apache.tomcat.util.log
org.apache.tomcat.util.modeler
The Modeler component of the Commons project offers convenient support for configuring and instantiating Model MBeans (management beans), as described in the JMX Specification.
org.apache.tomcat.util.modeler.modules
Implementation classes - should not be used directly.
org.apache.tomcat.util.net
org.apache.tomcat.util.net.jsse
org.apache.tomcat.util.net.openssl
org.apache.tomcat.util.net.openssl.ciphers
org.apache.tomcat.util.res
org.apache.tomcat.util.scan
This package contains the common classes used to perform configuration scanning for Catalina and Jasper.
org.apache.tomcat.util.security
org.apache.tomcat.util.threads
org.apache.tomcat.util.xreflection
org.apache.tomcat.websocket
org.apache.tomcat.websocket.pojo
This package provides the necessary plumbing to convert an annotated POJO into a WebSocket `Endpoint`.
org.apache.tomcat.websocket.server
Server-side specific implementation classes.