org.apache.tools.ant.input

## Class DefaultInputHandler

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

All Implemented Interfaces:
  InputHandler

Direct Known Subclasses:
  GreedyInputHandler, SecureInputHandler

    public class DefaultInputHandler
    extends java.lang.Object
    implements InputHandler

Prompts on System.err, reads input from System.in

Since:
  Ant 1.5

### Constructor Summary

Constructors
Constructor and Description
`DefaultInputHandler()` Empty no-arg constructor

### Method Summary

All Methods Instance Methods Concrete Methods
`protected java.io.InputStream` `getInputStream()` Returns the input stream from which the user input should be read.
`protected java.lang.String` `getPrompt(InputRequest request)` Constructs user prompt from a request.
`void` `handleInput(InputRequest request)` Prompts and requests input.

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

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

### Constructor Detail

#### DefaultInputHandler

    public DefaultInputHandler()

Empty no-arg constructor

### Method Detail

#### handleInput

    public void handleInput(InputRequest request)
                     throws BuildException

Prompts and requests input. May loop until a valid input has been entered.

Specified by:
  `handleInput` in interface `InputHandler`
Parameters:
  `request` - the request to handle
Throws:
  `BuildException` - if not possible to read from console

#### getPrompt

    protected java.lang.String getPrompt(InputRequest request)

Constructs user prompt from a request.

This implementation adds (choice1,choice2,choice3,...) to the prompt for `MultipleChoiceInputRequest`s.

Parameters:
  `request` - the request to construct the prompt for. Must not be `null`.
Returns:
  the prompt to ask the user

#### getInputStream

    protected java.io.InputStream getInputStream()

Returns the input stream from which the user input should be read.

Returns:
  the input stream from which the user input should be read.