Java Reference
In-Depth Information
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Channels
A channel is an open connection between a data source/data sink and a Java program to perform some I/O
operations. The
Channel
interface is in the
java.nio.channels
package. It is used as a base to implement channels
in Java. It declares only two methods:
close()
and
isOpen()
. When a channel is created, it is open and its
isOpen()
method returns
true
. Once you are finished using a channel, you should call its
close()
method to close it. At that
point,
isOpen()
returns false. Figure
9-15
depicts the class diagram for the
Channel
interface.
Figure 9-15.
A class diagram for the channel interface
