Package org.apache.commons.io.output

Class NullOutputStream

  • All Implemented Interfaces:
    java.io.Closeable, java.io.Flushable, java.lang.AutoCloseable
    public class NullOutputStream
extends java.io.OutputStream
    Never writes data. Calls never go beyond this class.

    This output stream has no destination (file/socket etc.) and all bytes written to it are ignored and lost.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void write​(byte[] b)
      Does nothing - output to /dev/null.
      void write​(byte[] b, int off, int len)
      Does nothing - output to /dev/null.
      void write​(int b)
      Does nothing - output to /dev/null.

      • Methods inherited from class java.io.OutputStream

        close, flush, nullOutputStream

      • Methods inherited from class java.lang.Object

        equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • INSTANCE

        public static final NullOutputStream INSTANCE
        The singleton instance.
        Since:
        2.12.0

      • NULL_OUTPUT_STREAM

        @Deprecated
public static final NullOutputStream NULL_OUTPUT_STREAM
        Deprecated.
        Use INSTANCE.
        The singleton instance.

    • Constructor Detail

      • NullOutputStream

        @Deprecated
public NullOutputStream()
        Deprecated.
        Use INSTANCE.
        Deprecated in favor of INSTANCE. TODO: Will be private in 3.0.

    • Method Detail

      • write

        public void write​(byte[] b)
           throws java.io.IOException
        Does nothing - output to /dev/null.
        Overrides:
        write in class java.io.OutputStream
        Parameters:
        b - The bytes to write
        Throws:
        java.io.IOException - never

      • write

        public void write​(byte[] b,
                  int off,
                  int len)
        Does nothing - output to /dev/null.
        Overrides:
        write in class java.io.OutputStream
        Parameters:
        b - The bytes to write
        off - The start offset
        len - The number of bytes to write

      • write

        public void write​(int b)
        Does nothing - output to /dev/null.
        Specified by:
        write in class java.io.OutputStream
        Parameters:
        b - The byte to write