## Package org.apache.tools.ant.util

Interface Summary
FileNameMapper: Interface to be used by SourceFileScanner.
TimeoutObserver: Interface for classes that want to be notified by Watchdog.
Tokenizer: input stream tokenizers implement this interface

Class Summary
ClasspathUtils: Offers some helper methods on the Path structure in ant.
ClasspathUtils.Delegate: Delegate that helps out any specific ProjectComponent that needs dynamic classloading.
CollectionUtils: A set of helper methods related to collection manipulation.
CollectionUtils.EmptyEnumeration
DateUtils: Helper methods to deal with date/time formatting with a specific defined format (ISO8601) or a plurialization correct elapsed time in minutes and seconds.
DOMElementWriter: Writes a DOM tree to a given Writer.
FileUtils: This class also encapsulates methods which allow Files to be refered to using abstract path names which are translated to native system file paths at runtime as well as copying files or setting there last modification time.
FlatFileNameMapper: Implementation of FileNameMapper that always returns the source file name without any leading directory information.
GlobPatternMapper: Implementation of FileNameMapper that does simple wildcard pattern replacements.
IdentityMapper: Implementation of FileNameMapper that always returns the source file name.
JavaEnvUtils: A set of helper methods related to locating executables or checking conditons of a given Java installation.
JAXPUtils: Collection of helper methods that retrieve a ParserFactory or Parsers and Readers.
KeepAliveInputStream: Class that can be used to wrap `System.in` without getting anxious about any client closing the stream.
KeepAliveOutputStream: Class that can be used to wrap `System.out` and `System.err` without getting anxious about any client closing the stream.
LazyFileOutputStream: Class that delays opening the output file until the first bytes shall be written or the method `open` has been invoked explicitly.
LazyHashtable: Hashtable implementation that allows delayed construction of expensive objects All operations that need access to the full list of objects will call initAll() first.
LineTokenizer: class to tokenize the input as lines seperated by \r (mac style), \r\n (dos/windows style) or \n (unix style)
LoaderUtils: ClassLoader utility methods
MergingMapper: Implementation of FileNameMapper that always returns the same target file name.
PackageNameMapper: Maps directory name matches into a dotted package name.
RegexpPatternMapper: Implementation of FileNameMapper that does regular expression replacements.
ResourceUtils: this class provides utility methods to process resources
ScriptRunner: This class is used to run BSF scripts
SourceFileScanner: Utility class that collects the functionality of the various scanDir methods that have been scattered in several tasks before.
StringUtils: A set of helper methods related to string manipulation.
TaskLogger: A facade that makes logging nicers to use.
TeeOutputStream: A simple T-piece to replicate an output stream into two separate streams
UnPackageNameMapper: Maps dotted package name matches to a directory name.
Watchdog: Generalization of `ExecuteWatchdog`
WeakishReference: this is a weak reference on java1.2 and up, a hard reference on java1.1
WeakishReference.HardReference: A hard reference for Java 1.1

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