# Package org.apache.tools.ant.util

package org.apache.tools.ant.util

- Interface Summary
  Interface
  Description
  FileNameMapper
  Interface to be used by SourceFileScanner.
  ResourceUtils.ResourceSelectorProvider
  Retryable
  Simple interface for executing a piece of code.
  TimeoutObserver
  Interface for classes that want to be notified by Watchdog.
  Tokenizer
  input stream tokenizers implement this interface
- Class Summary
  Class
  Description
  Base64Converter
  BASE 64 encoding of a String or an array of bytes.
  ChainedMapper
  A `ContainerMapper` that chains the results of the first nested `FileNameMapper`s into sourcefiles for the second, the second to the third, and so on, returning the resulting mapped filenames from the last nested `FileNameMapper`.
  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
  Deprecated.
  CollectionUtils.EmptyEnumeration<E>
  Deprecated.
  CompositeMapper
  A `ContainerMapper` that unites the results of its constituent `FileNameMapper`s into a single set of result filenames.
  ConcatFileInputStream
  Special `InputStream` that will concatenate the contents of an array of files.
  ConcatResourceInputStream
  Special `InputStream` that will concatenate the contents of Resources from a single ResourceCollection.
  ContainerMapper
  A `FileNameMapper` that contains other `FileNameMapper`s.
  DateUtils
  Helper methods to deal with date/time formatting with a specific defined format (ISO8601) or a correct pluralization of elapsed time in minutes and seconds.
  DeweyDecimal
  Utility class to contain version numbers in "Dewey Decimal" syntax.
  DOMElementWriter
  Writes a DOM tree to a given Writer.
  DOMElementWriter.XmlNamespacePolicy
  Whether namespaces should be ignored for elements and attributes.
  DOMUtils
  Some utility methods for common tasks when building DOM trees in memory.
  FileTokenizer
  Class to read the complete input into a string.
  FileUtils
  This class also encapsulates methods which allow Files to be referred to using abstract path names which are translated to native system file paths at runtime as well as copying files or setting their last modification time.
  FirstMatchMapper
  A `ContainerMapper` that returns the results of its first constituent `FileNameMapper`s that matches.
  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.
  IdentityStack<E>
  Identity Stack.
  JavaEnvUtils
  A set of helper methods related to locating executables or checking conditions 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.
  LayoutPreservingProperties
  A Properties collection which preserves comments and whitespace present in the input stream from which it was loaded.
  LazyFileOutputStream
  Class that delays opening the output file until the first bytes shall be written or the method `open` has been invoked explicitly.
  LazyHashtable<K,​V>
  Deprecated.
  LeadPipeInputStream
  Special `PipedInputStream` that will not die when the writing `Thread` is no longer alive.
  LineOrientedOutputStream
  Invokes `processLine` whenever a full line has been written to this stream.
  LineOrientedOutputStreamRedirector
  Output stream which buffer and redirect a stream line by line.
  LineTokenizer
  class to tokenize the input as lines separated by \r (mac style), \r\n (dos/windows style) or \n (unix style)
  LinkedHashtable<K,​V>
  Subclass of Hashtable that wraps a LinkedHashMap to provide predictable iteration order.
  LoaderUtils
  ClassLoader utility methods
  MergingMapper
  Implementation of FileNameMapper that always returns the same target file name.
  Native2AsciiUtils
  Contains helper methods for Ant's built-in implementation of native2ascii.
  NullOutputStream
  OutputStream that completely discards all data written to it.
  OutputStreamFunneler
  Manages a set of `OutputStream`s to write to a single underlying stream, which is closed only when the last "funnel" has been closed.
  PackageNameMapper
  Maps directory name matches into a dotted package name.
  PermissionUtils
  Contains helper methods for dealing with `PosixFilePermission` or the traditional Unix mode representation of permissions.
  ProcessUtil
  Process Utilities
  PropertyOutputStream
  `OutputStream` that writes an Ant property.
  ProxySetup
  Code to do proxy setup.
  ReaderInputStream
  Adapts a `Reader` as an `InputStream`.
  ReflectUtil
  Utility class to handle reflection on java objects.
  ReflectWrapper
  Utility class to handle reflection on java objects.
  RegexpPatternMapper
  Implementation of FileNameMapper that does regular expression replacements.
  ResourceUtils
  This class provides utility methods to process Resources.
  RetryHandler
  A simple utility class to take a piece of code (that implements `Retryable` interface) and executes that with possibility to retry the execution in case of IOException.
  ScriptFixBSFPath
  A class to modify a classloader to support BSF language support.
  ScriptRunner
  Deprecated.
  Implementation moved to another location.
  ScriptRunnerBase
  This is a common abstract base case for script runners.
  ScriptRunnerCreator
  This is a helper class used by ScriptRunnerHelper to create a ScriptRunner based on a classloader and on a language.
  ScriptRunnerHelper
  A class to help in creating, setting and getting script runners.
  SourceFileScanner
  Utility class that collects the functionality of the various scanDir methods that have been scattered in several tasks before.
  SplitClassLoader
  Specialized classloader for tasks that need finer grained control over which classes are to be loaded via Ant's classloader and which should not even if they are available.
  StreamUtils
  StringTokenizer
  Class to tokenize the input as areas separated by white space, or by a specified list of delim characters.
  StringUtils
  A set of helper methods related to string manipulation.
  SymbolicLinkUtils
  Deprecated.
  Starting Ant 1.10.2, this class is now deprecated in favour of the Java `Files` APIs introduced in Java 7, for dealing with symbolic links
  TaskLogger
  A facade that makes logging nicer to use.
  TeeOutputStream
  A simple T-piece to replicate an output stream into two separate streams
  UnicodeUtil
  Contains one helper method to create a backslash u escape
  UnPackageNameMapper
  Maps dotted package name matches to a directory name.
  UUEncoder
  UUEncoding of an input stream placed into an OutputStream.
  VectorSet<E>
  Subclass of Vector that won't store duplicate entries and shows HashSet's constant time performance characteristics for the contains method.
  Watchdog
  Generalization of `ExecuteWatchdog`
  WeakishReference
  Deprecated.
  deprecated 1.7; will be removed in Ant1.8 Just use `WeakReference` directly.
  WeakishReference.HardReference
  Deprecated.
  since 1.7.
  WorkerAnt
  A worker ant executes a single task in a background thread.
  XmlConstants
  XML Parser constants, all kept in one place for ease of reuse
  XMLFragment
  Use this class as a nested element if you want to get a literal DOM fragment of something nested into your task/type.
- Enum Class Summary
  Enum Class
  Description
  PermissionUtils.FileType
  The supported types of files, maps to the `isFoo` methods in `BasicFileAttributes`.
- Exception Summary
  Exception
  Description
  ResourceUtils.ReadOnlyTargetFileException