java.lang.Object | |
↳ | java.nio.channels.Channels |
Utility methods for channels and streams.
This class defines static methods that support the interoperation of the
stream classes of the java.io
package with the channel
classes of this package.
Public Methods | |||||||||||
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Constructs a channel that writes bytes to the given stream.
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Constructs a channel that reads bytes from the given stream.
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Constructs a stream that reads bytes from the given channel.
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Constructs a stream that writes bytes to the given channel.
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Constructs a reader that decodes bytes from the given channel using the
given decoder.
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Constructs a reader that decodes bytes from the given channel according
to the named charset.
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Constructs a writer that encodes characters according to the named
charset and writes the resulting bytes to the given channel.
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Constructs a writer that encodes characters using the given encoder and
writes the resulting bytes to the given channel.
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Inherited Methods | |||||||||||
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From class
java.lang.Object
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Constructs a channel that writes bytes to the given stream.
The resulting channel will not be buffered; it will simply redirect its I/O operations to the given stream. Closing the channel will in turn cause the stream to be closed.
out | The stream to which bytes are to be written |
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Constructs a channel that reads bytes from the given stream.
The resulting channel will not be buffered; it will simply redirect its I/O operations to the given stream. Closing the channel will in turn cause the stream to be closed.
in | The stream from which bytes are to be read |
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Constructs a stream that reads bytes from the given channel.
The read methods of the resulting stream will throw an
IllegalBlockingModeException if invoked while the underlying
channel is in non-blocking mode. The stream will not be buffered, and
it will not support the mark
or reset
methods. The stream will be safe for access by
multiple concurrent threads. Closing the stream will in turn cause the
channel to be closed.
ch | The channel from which bytes will be read |
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Constructs a stream that writes bytes to the given channel.
The write methods of the resulting stream will throw an IllegalBlockingModeException if invoked while the underlying channel is in non-blocking mode. The stream will not be buffered. The stream will be safe for access by multiple concurrent threads. Closing the stream will in turn cause the channel to be closed.
ch | The channel to which bytes will be written |
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Constructs a reader that decodes bytes from the given channel using the given decoder.
The resulting stream will contain an internal input buffer of at
least minBufferCap bytes. The stream's read methods
will, as needed, fill the buffer by reading bytes from the underlying
channel; if the channel is in non-blocking mode when bytes are to be
read then an IllegalBlockingModeException will be thrown. The
resulting stream will not otherwise be buffered, and it will not support
the mark
or reset
methods.
Closing the stream will in turn cause the channel to be closed.
ch | The channel from which bytes will be read |
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dec | The charset decoder to be used |
minBufferCap | The minimum capacity of the internal byte buffer, or -1 if an implementation-dependent default capacity is to be used |
Constructs a reader that decodes bytes from the given channel according to the named charset.
An invocation of this method of the form
behaves in exactly the same way as the expressionChannels.newReader(ch, csname)
Channels.newReader(ch, Charset.forName(csName) .newDecoder(), -1);
ch | The channel from which bytes will be read |
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csName | The name of the charset to be used |
UnsupportedCharsetException | If no support for the named charset is available in this instance of the Java virtual machine |
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Constructs a writer that encodes characters according to the named charset and writes the resulting bytes to the given channel.
An invocation of this method of the form
behaves in exactly the same way as the expressionChannels.newWriter(ch, csname)
Channels.newWriter(ch, Charset.forName(csName) .newEncoder(), -1);
ch | The channel to which bytes will be written |
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csName | The name of the charset to be used |
UnsupportedCharsetException | If no support for the named charset is available in this instance of the Java virtual machine |
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Constructs a writer that encodes characters using the given encoder and writes the resulting bytes to the given channel.
The resulting stream will contain an internal output buffer of at least minBufferCap bytes. The stream's write methods will, as needed, flush the buffer by writing bytes to the underlying channel; if the channel is in non-blocking mode when bytes are to be written then an IllegalBlockingModeException will be thrown. The resulting stream will not otherwise be buffered. Closing the stream will in turn cause the channel to be closed.
ch | The channel to which bytes will be written |
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enc | The charset encoder to be used |
minBufferCap | The minimum capacity of the internal byte buffer, or -1 if an implementation-dependent default capacity is to be used |