org.apache.commons.io.output

## Class CloseShieldOutputStream

- java.lang.Object
- - java.io.OutputStream
  - - java.io.FilterOutputStream
    - - org.apache.commons.io.output.ProxyOutputStream
      - - org.apache.commons.io.output.CloseShieldOutputStream

- All Implemented Interfaces:
    Closeable, Flushable, AutoCloseable

      public class CloseShieldOutputStream
      extends ProxyOutputStream

  Proxy stream that prevents the underlying output stream from being closed.

  This class is typically used in cases where an output stream needs to be passed to a component that wants to explicitly close the stream even if other components would still use the stream for output.

  Since:
    1.4

- - ### Field Summary

    - ### Fields inherited from class java.io.FilterOutputStream

      `out`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `CloseShieldOutputStream(OutputStream outputStream)` Deprecated. Using this constructor prevents IDEs from warning if the underlying output stream is never closed. Use `wrap(OutputStream)` instead.

  - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `close()` Replaces the underlying output stream with a `ClosedOutputStream` sentinel.
    `static CloseShieldOutputStream` | `wrap(OutputStream outputStream)` Creates a proxy that shields the given output stream from being closed.

    - ### Methods inherited from class org.apache.commons.io.output.ProxyOutputStream

      `afterWrite, beforeWrite, flush, handleIOException, write, write, write`

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

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

- - ### Constructor Detail

    - #### CloseShieldOutputStream

          @Deprecated
          public CloseShieldOutputStream(OutputStream outputStream)

      Deprecated. Using this constructor prevents IDEs from warning if the underlying output stream is never closed. Use `wrap(OutputStream)` instead.
      Creates a proxy that shields the given output stream from being closed.
      Parameters:
        `outputStream` - underlying output stream

  - ### Method Detail

    - #### wrap

          public static CloseShieldOutputStream wrap(OutputStream outputStream)

      Creates a proxy that shields the given output stream from being closed.
      Parameters:
        `outputStream` - the output stream to wrap
      Returns:
        the created proxy
      Since:
        2.9.0

    - #### close

          public void close()

      Replaces the underlying output stream with a `ClosedOutputStream` sentinel. The original output stream will remain open, but this proxy will appear closed.
      Specified by:
        `close` in interface `Closeable`
      Specified by:
        `close` in interface `AutoCloseable`
      Overrides:
        `close` in class `ProxyOutputStream`

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