Package org.apache.tools.ant.input

## Class PropertyFileInputHandler

- java.lang.Object
- - org.apache.tools.ant.input.PropertyFileInputHandler

- All Implemented Interfaces:
    `InputHandler`

      public class PropertyFileInputHandler
      extends java.lang.Object
      implements InputHandler

  Reads input from a property file, the file name is read from the system property ant.input.properties, the prompt is the key for input.
  Since:
    Ant 1.5

- - ### Field Summary

    Fields
    Modifier and Type | Field | Description
    --- | --- | ---
    `static java.lang.String` | `FILE_NAME_KEY` | Name of the system property we expect to hold the file name.

  - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `PropertyFileInputHandler()` | Empty no-arg constructor.

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | `handleInput​(InputRequest request)` | Picks up the input from a property, using the prompt as the name of the property.

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

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

- - ### Field Detail

    - #### FILE_NAME_KEY

          public static final java.lang.String FILE_NAME_KEY

      Name of the system property we expect to hold the file name.
      See Also:
        Constant Field Values

  - ### Constructor Detail

    - #### PropertyFileInputHandler

          public PropertyFileInputHandler()

      Empty no-arg constructor.

  - ### Method Detail

    - #### handleInput

          public void handleInput​(InputRequest request)
                           throws BuildException

      Picks up the input from a property, using the prompt as the name of the property.
      Specified by:
        `handleInput` in interface `InputHandler`
      Parameters:
        `request` - an input request.
      Throws:
        `BuildException` - if no property of that name can be found.