Touch (Apache Ant API)
Description: declaration: package: org.apache.tools.ant.taskdefs, class: Touch

Package org.apache.tools.ant.taskdefs

# Class Touch

java.lang.Object
org.apache.tools.ant.ProjectComponent
org.apache.tools.ant.Task
org.apache.tools.ant.taskdefs.Touch

All Implemented Interfaces:
  `Cloneable`

public class Touch extends Task
Touch a file and/or fileset(s) and/or filelist(s); corresponds to the Unix touch command.

If the file to touch doesn't exist, an empty one is created.

Since:
  Ant 1.1

- ## Nested Class Summary

  Nested Classes
  Modifier and Type
  Class
  Description
  `static interface`
  `Touch.DateFormatFactory`

- ## Field Summary

  Fields
  Modifier and Type
  Field
  Description
  `static Touch.DateFormatFactory`
  `DEFAULT_DF_FACTORY`
  Provides access to DateUtils.EN_US_DATE_FORMAT_MIN (primary) and DateUtils.EN_US_DATE_FORMAT_SEC (fallback).

  ### Fields inherited from class org.apache.tools.ant.Task

  `target, taskName, taskType, wrapper`

  ### Fields inherited from class org.apache.tools.ant.ProjectComponent

  `description, location, project`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `Touch()`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `add​(ResourceCollection rc)`
  Add a collection of resources to touch.
  `void`
  `add​(FileNameMapper fileNameMapper)`
  Add a `FileNameMapper`.
  `void`
  `addConfiguredMapper​(Mapper mapper)`
  Add a `Mapper`.
  `void`
  `addFilelist​(FileList list)`
  Add a filelist to touch.
  `void`
  `addFileset​(FileSet set)`
  Add a set of files to touch.
  `protected void`
  `checkConfiguration()`
  Check that this task has been configured properly.
  `void`
  `execute()`
  Execute the touch operation.
  `void`
  `setDatetime​(String dateTime)`
  Set the new modification time of file(s) touched in the format "MM/DD/YYYY HH:MM AM or PM" or "MM/DD/YYYY HH:MM:SS AM or PM".
  `void`
  `setFile​(File file)`
  Sets a single source file to touch.
  `void`
  `setMillis​(long millis)`
  Set the new modification time of file(s) touched in milliseconds since midnight Jan 1 1970.
  `void`
  `setMkdirs​(boolean mkdirs)`
  Set whether nonexistent parent directories should be created when touching new files.
  `void`
  `setPattern​(String pattern)`
  Set the format of the datetime attribute.
  `void`
  `setVerbose​(boolean verbose)`
  Set whether the touch task will report every file it creates; defaults to `true`.
  `protected void`
  `touch()`
  Does the actual work; assumes everything has been checked by now.
  `protected void`
  `touch​(File file)`
  Deprecated.
  since 1.6.x.

  ### Methods inherited from class org.apache.tools.ant.Task

  `bindToOwner, getOwningTarget, getRuntimeConfigurableWrapper, getTaskName, getTaskType, getWrapper, handleErrorFlush, handleErrorOutput, handleFlush, handleInput, handleOutput, init, isInvalid, log, log, log, log, maybeConfigure, perform, reconfigure, setOwningTarget, setRuntimeConfigurableWrapper, setTaskName, setTaskType`

  ### Methods inherited from class org.apache.tools.ant.ProjectComponent

  `clone, getDescription, getLocation, getProject, setDescription, setLocation, setProject`

  ### Methods inherited from class java.lang.Object

  `equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- ## Field Details

  - ### DEFAULT_DF_FACTORY

    public static final Touch.DateFormatFactory DEFAULT_DF_FACTORY
    Provides access to DateUtils.EN_US_DATE_FORMAT_MIN (primary) and DateUtils.EN_US_DATE_FORMAT_SEC (fallback).

- ## Constructor Details

  - ### Touch

    public Touch()

- ## Method Details

  - ### setFile

    public void setFile​(File file)
    Sets a single source file to touch. If the file does not exist an empty file will be created.
    Parameters:
      `file` - the `File` to touch.

  - ### setMillis

    public void setMillis​(long millis)
    Set the new modification time of file(s) touched in milliseconds since midnight Jan 1 1970. Optional, default=now.
    Parameters:
      `millis` - the `long` timestamp to use.

  - ### setDatetime

    public void setDatetime​(String dateTime)
    Set the new modification time of file(s) touched in the format "MM/DD/YYYY HH:MM AM or PM" or "MM/DD/YYYY HH:MM:SS AM or PM". Optional, default=now.
    Parameters:
      `dateTime` - the `String` date in the specified format.

  - ### setMkdirs

    public void setMkdirs​(boolean mkdirs)
    Set whether nonexistent parent directories should be created when touching new files.
    Parameters:
      `mkdirs` - `boolean` whether to create parent directories.
    Since:
      Ant 1.6.3

  - ### setVerbose

    public void setVerbose​(boolean verbose)
    Set whether the touch task will report every file it creates; defaults to `true`.
    Parameters:
      `verbose` - `boolean` flag.
    Since:
      Ant 1.6.3

  - ### setPattern

    public void setPattern​(String pattern)
    Set the format of the datetime attribute.
    Parameters:
      `pattern` - the `SimpleDateFormat`-compatible format pattern.
    Since:
      Ant 1.6.3

  - ### addConfiguredMapper

    public void addConfiguredMapper​(Mapper mapper)
    Add a `Mapper`.
    Parameters:
      `mapper` - the `Mapper` to add.
    Since:
      Ant 1.6.3

  - ### add

    public void add​(FileNameMapper fileNameMapper) throws BuildException
    Add a `FileNameMapper`.
    Parameters:
      `fileNameMapper` - the `FileNameMapper` to add.
    Throws:
      `BuildException` - if multiple mappers are added.
    Since:
      Ant 1.6.3

  - ### addFileset

    public void addFileset​(FileSet set)
    Add a set of files to touch.
    Parameters:
      `set` - the `Fileset` to add.

  - ### addFilelist

    public void addFilelist​(FileList list)
    Add a filelist to touch.
    Parameters:
      `list` - the `Filelist` to add.

  - ### add

    public void add​(ResourceCollection rc)
    Add a collection of resources to touch.
    Parameters:
      `rc` - the collection to add.
    Since:
      Ant 1.7

  - ### checkConfiguration

    protected void checkConfiguration() throws BuildException
    Check that this task has been configured properly.
    Throws:
      `BuildException` - if configuration errors are detected.
    Since:
      Ant 1.6.3

  - ### execute

    public void execute() throws BuildException
    Execute the touch operation.
    Overrides:
      `execute` in class `Task`
    Throws:
      `BuildException` - if an error occurs.

  - ### touch

    protected void touch() throws BuildException
    Does the actual work; assumes everything has been checked by now.
    Throws:
      `BuildException` - if an error occurs.

  - ### touch

    @Deprecated protected void touch​(File file)
    Deprecated.
    since 1.6.x.
    Touch a single file with the current timestamp (this.millis). This method does not interact with any nested mappers and remains for reasons of backwards-compatibility only.
    Parameters:
      `file` - file to touch
    Throws:
      `BuildException` - on error