# Package org.apache.tools.ant

Interface Summary
Interface | Description
--- | ---
BuildListener | Instances of classes that implement this interface can register to be notified when things happened during a build.
BuildLogger | Interface used by Ant to log the build output.
DynamicAttribute | Enables a task to control unknown attributes
DynamicAttributeNS | Enables a task to control unknown attributes.
DynamicConfigurator | Enables a task to control unknown attributes and elements.
DynamicConfiguratorNS | Enables a task to control unknown attributes and elements.
DynamicElement | Enables a task to control unknown elements.
DynamicElementNS | Enables a task to control unknown elements.
Executor | Target executor abstraction.
FileScanner | An interface used to describe the actions required of any type of directory scanner.
PropertyHelper.Delegate | Marker interface for a PropertyHelper delegate.
PropertyHelper.PropertyEvaluator | Looks up a property's value based on its name.
PropertyHelper.PropertySetter | Sets or overrides a property.
SubBuildListener | Instances of classes that implement this interface can register to be also notified when things happened during a subbuild.
TaskContainer | Interface for objects which can contain tasks.
TypeAdapter | Used to wrap types.

Class Summary
Class | Description
--- | ---
AntClassLoader | Used to load classes within ant with a different classpath from that used to start ant.
AntTypeDefinition | This class contains all the information on a particular ant type, the classname, adaptor and the class it should be assignable from.
BuildEvent | Class representing an event occurring during a build.
ComponentHelper | Component creation and configuration.
DefaultLogger | Writes build events to a PrintStream.
DemuxInputStream | Passes input requests to the project object for demuxing into individual tasks and threads.
DemuxOutputStream | Logs content written by a thread and forwards the buffers onto the project object which will forward the content to the appropriate task.
Diagnostics | A little diagnostic helper that output some information that may help in support.
DirectoryScanner | Class for scanning a directory for files/directories which match certain criteria.
ExtensionPoint | An extension point build files can provide as a place where other build files can add new dependencies.
IntrospectionHelper | Helper class that collects the methods a task or nested element holds to set attributes, create nested elements or hold PCDATA elements.
IntrospectionHelper.Creator | creator - allows use of create/store external to IntrospectionHelper.
Location | Stores the location of a piece of text within a file (file name, line number and column number).
MagicNames | Magic names used within Ant.
Main | Command line entry point into Ant.
NoBannerLogger | Extends DefaultLogger to strip out empty targets.
PathTokenizer | A Path tokenizer takes a path and returns the components that make up that path.
Project | Central representation of an Ant project.
ProjectComponent | Base class for components of a project, including tasks and data types.
ProjectHelper | Configures a Project (complete with Targets and Tasks) based on a build file.
ProjectHelper.OnMissingExtensionPoint | Possible value for target's onMissingExtensionPoint attribute.
ProjectHelperRepository | Repository of `ProjectHelper` found in the classpath or via some System properties.
PropertyHelper | Deals with properties - substitution, dynamic properties, etc.
RuntimeConfigurable | Wrapper class that holds the attributes of an element, its children, and any text within it.
Target | Class to implement a target object with required parameters.
Task | Base class for all tasks.
TaskAdapter | Uses introspection to "adapt" an arbitrary Bean which doesn't itself extend Task, but still contains an execute method and optionally a setProject method.
TaskConfigurationChecker | Helper class for the check of the configuration of a given task.
UnknownElement | Wrapper class that holds all the information necessary to create a task or data type that did not exist when Ant started, or one which has had its definition updated to use a different implementation class.
XmlLogger | Generates a file in the current directory with an XML description of what happened during a build.

Exception Summary
Exception | Description
--- | ---
BuildException | Signals an error condition during a build
ExitException | Used to report exit status of classes which call System.exit().
ExitStatusException | BuildException + exit status.
UnsupportedAttributeException | Used to report attempts to set an unsupported attribute
UnsupportedElementException | Used to report attempts to set an unsupported element When the attempt to set the element is made, the code does not not know the name of the task/type based on a mapping from the classname to the task/type.