KeepAliveInputStream (Apache Ant API)
Description: declaration: package: org.apache.tools.ant.util, class: KeepAliveInputStream

# 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 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 FilterInputStream

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

  ### Methods inherited from class InputStream

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

  ### Methods inherited from class 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