Package org.apache.tools.ant.util

# Class KeepAliveInputStream

java.lang.Object
java.io.InputStream
java.io.FilterInputStream
org.apache.tools.ant.util.KeepAliveInputStream

All Implemented Interfaces:
  `Closeable`, `AutoCloseable`

public class KeepAliveInputStream extends FilterInputStream
Class that can be used to wrap `System.in` without getting anxious about any client closing the stream.

In code-language it means that it is not necessary to do:

     if (out != System.in) {
       in.close();
     }

Since:
  Ant 1.6

## Field Summary

### Fields inherited from class java.io.FilterInputStream

`in`

## Constructor Summary

Constructors
Constructor
Description
`KeepAliveInputStream(InputStream in)`
Constructor of KeepAliveInputStream.

## Method Summary

Modifier and Type
Method
Description
`void`
`close()`
This method does nothing.
`static InputStream`
`wrapSystemIn()`
Convenience factory method that returns a non-closing InputStream around System.in.

### Methods inherited from class java.io.FilterInputStream

`available, mark, markSupported, read, read, read, reset, skip`

### Methods inherited from class java.io.InputStream

`nullInputStream, readAllBytes, readNBytes, readNBytes, skipNBytes, transferTo`

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

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

## Constructor Details

### KeepAliveInputStream

public KeepAliveInputStream(InputStream in)
Constructor of KeepAliveInputStream.

Parameters:
  `in` - an InputStream value, it should be standard input.

## Method Details

### close

public void close() throws IOException
This method does nothing.

Specified by:
  `close` in interface `AutoCloseable`
Specified by:
  `close` in interface `Closeable`
Overrides:
  `close` in class `FilterInputStream`
Throws:
  `IOException` - as we are overriding FilterInputStream.

### wrapSystemIn

public static InputStream wrapSystemIn()
Convenience factory method that returns a non-closing InputStream around System.in.

Returns:
  InputStream
Since:
  Ant 1.8.0