org.eclipse.jetty.util

## Class IO

- java.lang.Object
- - org.eclipse.jetty.util.IO

-     public class IO
      extends Object

  IO Utilities. Provides stream handling utilities in singleton Threadpool implementation accessed by static members.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static int` | `bufferSize`
    `static String` | `CRLF`
    `static byte[]` | `CRLF_BYTES`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `IO()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `static void` | `close(InputStream is)` closes an input stream, and logs exceptions
    `static void` | `close(OutputStream os)` closes an output stream, and logs exceptions
    `static void` | `close(Reader reader)` closes a reader, and logs exceptions
    `static void` | `close(Writer writer)` closes a writer, and logs exceptions
    `static void` | `copy(File from, File to)` Copy files or directories
    `static void` | `copy(InputStream in, OutputStream out)` Copy Stream in to Stream out until EOF or exception.
    `static void` | `copy(InputStream in, OutputStream out, long byteCount)` Copy Stream in to Stream for byteCount bytes or until EOF or exception.
    `static void` | `copy(Reader in, Writer out)` Copy Reader to Writer out until EOF or exception.
    `static void` | `copy(Reader in, Writer out, long byteCount)` Copy Reader to Writer for byteCount bytes or until EOF or exception.
    `static void` | `copyDir(File from, File to)`
    `static void` | `copyFile(File from, File to)`
    `static void` | `copyThread(InputStream in, OutputStream out)` Copy Stream in to Stream out until EOF or exception.
    `static void` | `copyThread(Reader in, Writer out)` Copy Stream in to Stream out until EOF or exception in own thread
    `static boolean` | `delete(File file)` Delete File.
    `static InputStream` | `getClosedStream()`
    `static PrintWriter` | `getNullPrintWriter()`
    `static OutputStream` | `getNullStream()`
    `static Writer` | `getNullWriter()`
    `static byte[]` | `readBytes(InputStream in)`
    `static String` | `toString(InputStream in)` Read input stream to string.
    `static String` | `toString(InputStream in, String encoding)` Read input stream to string.
    `static String` | `toString(Reader in)` Read input stream to string.

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

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

- - ### Field Detail

    - #### CRLF

          public static final String CRLF

      See Also:
        Constant Field Values

    - #### CRLF_BYTES

          public static final byte[] CRLF_BYTES

    - #### bufferSize

          public static int bufferSize

  - ### Constructor Detail

    - #### IO

          public IO()

  - ### Method Detail

    - #### copyThread

          public static void copyThread(InputStream in,
                        OutputStream out)

      Copy Stream in to Stream out until EOF or exception. in own thread

    - #### copy

          public static void copy(InputStream in,
                  OutputStream out)
                           throws IOException

      Copy Stream in to Stream out until EOF or exception.
      Throws:
        `IOException`

    - #### copyThread

          public static void copyThread(Reader in,
                        Writer out)

      Copy Stream in to Stream out until EOF or exception in own thread

    - #### copy

          public static void copy(Reader in,
                  Writer out)
                           throws IOException

      Copy Reader to Writer out until EOF or exception.
      Throws:
        `IOException`

    - #### copy

          public static void copy(InputStream in,
                  OutputStream out,
                  long byteCount)
                           throws IOException

      Copy Stream in to Stream for byteCount bytes or until EOF or exception.
      Throws:
        `IOException`

    - #### copy

          public static void copy(Reader in,
                  Writer out,
                  long byteCount)
                           throws IOException

      Copy Reader to Writer for byteCount bytes or until EOF or exception.
      Throws:
        `IOException`

    - #### copy

          public static void copy(File from,
                  File to)
                           throws IOException

      Copy files or directories
      Parameters:
        `from` -
        `to` -
      Throws:
        `IOException`

    - #### copyDir

          public static void copyDir(File from,
                     File to)
                              throws IOException

      Throws:
        `IOException`

    - #### copyFile

          public static void copyFile(File from,
                      File to)
                               throws IOException

      Throws:
        `IOException`

    - #### toString

          public static String toString(InputStream in)
                                 throws IOException

      Read input stream to string.
      Throws:
        `IOException`

    - #### toString

          public static String toString(InputStream in,
                        String encoding)
                                 throws IOException

      Read input stream to string.
      Throws:
        `IOException`

    - #### toString

          public static String toString(Reader in)
                                 throws IOException

      Read input stream to string.
      Throws:
        `IOException`

    - #### delete

          public static boolean delete(File file)

      Delete File. This delete will recursively delete directories - BE CAREFULL
      Parameters:
        `file` - The file to be deleted.

    - #### close

          public static void close(InputStream is)

      closes an input stream, and logs exceptions
      Parameters:
        `is` - the input stream to close

    - #### close

          public static void close(Reader reader)

      closes a reader, and logs exceptions
      Parameters:
        `reader` - the reader to close

    - #### close

          public static void close(Writer writer)

      closes a writer, and logs exceptions
      Parameters:
        `writer` - the writer to close

    - #### readBytes

          public static byte[] readBytes(InputStream in)
                                  throws IOException

      Throws:
        `IOException`

    - #### close

          public static void close(OutputStream os)

      closes an output stream, and logs exceptions
      Parameters:
        `os` - the output stream to close

    - #### getNullStream

          public static OutputStream getNullStream()

      Returns:
        An outputstream to nowhere

    - #### getClosedStream

          public static InputStream getClosedStream()

      Returns:
        An outputstream to nowhere

    - #### getNullWriter

          public static Writer getNullWriter()

      Returns:
        An writer to nowhere

    - #### getNullPrintWriter

          public static PrintWriter getNullPrintWriter()

      Returns:
        An writer to nowhere

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