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## org.apache.tools.ant.taskdefs
Class Replace

    java.lang.Object
      org.apache.tools.ant.ProjectComponent
          org.apache.tools.ant.Task
              org.apache.tools.ant.taskdefs.MatchingTask
                  org.apache.tools.ant.taskdefs.Replace

All Implemented Interfaces:
  java.lang.Cloneable, SelectorContainer

    public class Replace

extends MatchingTask

Replaces all occurrences of one or more string tokens with given values in the indicated files. Each value can be either a string or the value of a property available in a designated property file. If you want to replace a text that crosses line boundaries, you must use a nested `<replacetoken>` element.

Since:
  Ant 1.1

Nested Class Summary
`class` | `Replace.NestedString` An inline string to use as the replacement text.
`class` | `Replace.Replacefilter` A filter to apply.

Field Summary

Fields inherited from class org.apache.tools.ant.taskdefs.MatchingTask
`fileset`

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
`Replace()`

Method Summary
`void` | `addConfigured(ResourceCollection rc)` Support arbitrary file system based resource collections.
`Replace.Replacefilter` | `createReplacefilter()` Add a nested <replacefilter> element.
`Replace.NestedString` | `createReplaceToken()` Create a token to filter as the text of a nested element.
`Replace.NestedString` | `createReplaceValue()` Create a string to replace the token as the text of a nested element.
`void` | `execute()` Do the execution.
`java.util.Properties` | `getProperties(java.io.File propertyFile)` Load a properties file.
`java.util.Properties` | `getProperties(Resource propertyResource)` Load a properties resource.
`void` | `setDir(java.io.File dir)` The base directory to use when replacing a token in multiple files; required if `file` is not defined.
`void` | `setEncoding(java.lang.String encoding)` Set the file encoding to use on the files read and written by the task; optional, defaults to default JVM encoding.
`void` | `setFailOnNoReplacements(boolean b)` Whether the build should fail if nothing has been replaced.
`void` | `setFile(java.io.File file)` Set the source file; required unless `dir` is set.
`void` | `setPreserveLastModified(boolean b)` Whether the file timestamp shall be preserved even if the file is modified.
`void` | `setPropertyFile(java.io.File propertyFile)` The name of a property file from which properties specified using nested `<replacefilter>` elements are drawn; required only if the property attribute of `<replacefilter>` is used.
`void` | `setPropertyResource(Resource propertyResource)` A resource from which properties specified using nested `<replacefilter>` elements are drawn; required only if the property attribute of `<replacefilter>` is used.
`void` | `setReplaceFilterFile(java.io.File replaceFilterFile)` Sets the name of a property file containing filters; optional.
`void` | `setReplaceFilterResource(Resource replaceFilter)` Sets the name of a resource containing filters; optional.
`void` | `setSummary(boolean summary)` Indicates whether a summary of the replace operation should be produced, detailing how many token occurrences and files were processed; optional, default=`false`.
`void` | `setToken(java.lang.String token)` Set the string token to replace; required unless a nested `replacetoken` element or the `replacefilterresource` attribute is used.
`void` | `setValue(java.lang.String value)` Set the string value to use as token replacement; optional, default is the empty string "".
`void` | `validateAttributes()` Validate attributes provided for this task in .xml build file.
`void` | `validateReplacefilters()` Validate nested elements.

Methods inherited from class org.apache.tools.ant.taskdefs.MatchingTask
`add, addAnd, addContains, addContainsRegexp, addCustom, addDate, addDepend, addDepth, addDifferent, addFilename, addMajority, addModified, addNone, addNot, addOr, addPresent, addSelector, addSize, addType, appendSelector, createExclude, createExcludesFile, createInclude, createIncludesFile, createPatternSet, getDirectoryScanner, getImplicitFileSet, getSelectors, hasSelectors, selectorCount, selectorElements, setCaseSensitive, setDefaultexcludes, setExcludes, setExcludesfile, setFollowSymlinks, setIncludes, setIncludesfile, setProject, XsetIgnore, XsetItems`

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`

Methods inherited from class java.lang.Object
`equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### Replace

    public Replace()

Method Detail

### execute

    public void execute()
                 throws BuildException

  Do the execution.

  Overrides:
    `execute` in class `Task`
  Throws:
    `BuildException` - if we cant build

### validateAttributes

    public void validateAttributes()
                            throws BuildException

  Validate attributes provided for this task in .xml build file.

  Throws:
    `BuildException` - if any supplied attribute is invalid or any mandatory attribute is missing.

### validateReplacefilters

    public void validateReplacefilters()
                                throws BuildException

  Validate nested elements.

  Throws:
    `BuildException` - if any supplied attribute is invalid or any mandatory attribute is missing.

### getProperties

    public java.util.Properties getProperties(java.io.File propertyFile)
                                       throws BuildException

  Load a properties file.

  Parameters:
    `propertyFile` - the file to load the properties from.
  Returns:
    loaded `Properties` object.
  Throws:
    `BuildException` - if the file could not be found or read.

### getProperties

    public java.util.Properties getProperties(Resource propertyResource)
                                       throws BuildException

  Load a properties resource.

  Parameters:
    `propertyResource` - the resource to load the properties from.
  Returns:
    loaded `Properties` object.
  Throws:
    `BuildException` - if the resource could not be found or read.
  Since:
    Ant 1.8.0

### setFile

    public void setFile(java.io.File file)

  Set the source file; required unless `dir` is set.

  Parameters:
    `file` - source `File`.

### setSummary

    public void setSummary(boolean summary)

  Indicates whether a summary of the replace operation should be produced, detailing how many token occurrences and files were processed; optional, default=`false`.

  Parameters:
    `summary` - `boolean` whether a summary of the replace operation should be logged.

### setReplaceFilterFile

    public void setReplaceFilterFile(java.io.File replaceFilterFile)

  Sets the name of a property file containing filters; optional. Each property will be treated as a replacefilter where token is the name of the property and value is the value of the property.

  Parameters:
    `replaceFilterFile` - `File` to load.

### setReplaceFilterResource

    public void setReplaceFilterResource(Resource replaceFilter)

  Sets the name of a resource containing filters; optional. Each property will be treated as a replacefilter where token is the name of the property and value is the value of the property.

  Parameters:
    `replaceFilter` - `Resource` to load.
  Since:
    Ant 1.8.0

### setDir

    public void setDir(java.io.File dir)

  The base directory to use when replacing a token in multiple files; required if `file` is not defined.

  Parameters:
    `dir` - `File` representing the base directory.

### setToken

    public void setToken(java.lang.String token)

  Set the string token to replace; required unless a nested `replacetoken` element or the `replacefilterresource` attribute is used.

  Parameters:
    `token` - token `String`.

### setValue

    public void setValue(java.lang.String value)

  Set the string value to use as token replacement; optional, default is the empty string "".

  Parameters:
    `value` - replacement value.

### setEncoding

    public void setEncoding(java.lang.String encoding)

  Set the file encoding to use on the files read and written by the task; optional, defaults to default JVM encoding.

  Parameters:
    `encoding` - the encoding to use on the files.

### createReplaceToken

    public Replace.NestedString createReplaceToken()

  Create a token to filter as the text of a nested element.

  Returns:
    nested token `NestedString` to configure.

### createReplaceValue

    public Replace.NestedString createReplaceValue()

  Create a string to replace the token as the text of a nested element.

  Returns:
    replacement value `NestedString` to configure.

### setPropertyFile

    public void setPropertyFile(java.io.File propertyFile)

  The name of a property file from which properties specified using nested `<replacefilter>` elements are drawn; required only if the property attribute of `<replacefilter>` is used.

  Parameters:
    `propertyFile` - `File` to load.

### setPropertyResource

    public void setPropertyResource(Resource propertyResource)

  A resource from which properties specified using nested `<replacefilter>` elements are drawn; required only if the property attribute of `<replacefilter>` is used.

  Parameters:
    `propertyResource` - `Resource` to load.
  Since:
    Ant 1.8.0

### createReplacefilter

    public Replace.Replacefilter createReplacefilter()

  Add a nested <replacefilter> element.

  Returns:
    a nested `Replacefilter` object to be configured.

### addConfigured

    public void addConfigured(ResourceCollection rc)

  Support arbitrary file system based resource collections.

  Since:
    Ant 1.8.0

### setPreserveLastModified

    public void setPreserveLastModified(boolean b)

  Whether the file timestamp shall be preserved even if the file is modified.

  Since:
    Ant 1.8.0

### setFailOnNoReplacements

    public void setFailOnNoReplacements(boolean b)

  Whether the build should fail if nothing has been replaced.

  Since:
    Ant 1.8.0

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