org.apache.tools.ant.taskdefs

## Class BuildNumber

- java.lang.Object
- - org.apache.tools.ant.ProjectComponent
  - - org.apache.tools.ant.Task
    - - org.apache.tools.ant.taskdefs.BuildNumber

- All Implemented Interfaces:
    java.lang.Cloneable

      public class BuildNumber
      extends Task

  Read, increment, and write a build number in a file It will first attempt to read a build number from a file, then set the property "build.number" to the value that was read in (or 0 if no such value). Then it will increment the build number by one and write it back out into the file.
  Since:
    Ant 1.5

- - ### Field Summary

    - ### 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 and Description
    `BuildNumber()`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `execute()` Run task.
    `void` | `setFile(java.io.File file)` The file in which the build number is stored.

    - ### 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`

- - ### Constructor Detail

    - #### BuildNumber

          public BuildNumber()

  - ### Method Detail

    - #### setFile

          public void setFile(java.io.File file)

      The file in which the build number is stored. Defaults to "build.number" if not specified.
      Parameters:
        `file` - the file in which build number is stored.

    - #### execute

          public void execute()
                       throws BuildException

      Run task.
      Overrides:
        `execute` in class `Task`
      Throws:
        `BuildException` - if an error occurs