Nonblocking IO 使用的是 polling （轮询）的方法（主动去问）， 而 异步IO 使用的是信号机制（等待系统通知）

13 NIO vs IO http://tutorials.jenkov.com/java-nio/nio-vs-io.html When studying both the Java NIO and IO API's, a question quickly pops into mind: When should I use IO and when s...

http://tutorials.jenkov.com/java-nio/pipe.html A Java NIO Pipe is a one-way data connection between two threads. A Pipe has a source channel and a sink channel. You write data t...

11， DatagramChannel： http://tutorials.jenkov.com/java-nio/datagram-channel.html A Java NIO DatagramChannel is a channel that can send and receive UDP packets. Since UDP is a c...

11,DatagramChannel; 12，Pipe ; 13, NIO vs IO

A Java NIO SocketChannel is a channel that is connected to a TCP network socket. It is Java NIO's equivalent of Java Networking's Sockets. There are two ways a SocketChannel can...

A Java NIO FileChannel is a channel that is connected to a file. Using a file channel you can read data from a file, and write data to a file. The Java NIO FileChannel class is ...

A Selector is a Java NIO component which can examine one or more NIO Channel's, and determine which channels are ready for e.g. reading or writing. This way a single thread can ...

In Java NIO you can transfer data directly from one channel to another, if one of the channels is a FileChannel. The FileChannel class has a transferTo() and a transferFrom() me...

Java NIO comes with built-in scatter / gather support. Scatter / gather are concepts used in reading from, and writing to channels. A scattering read from a channel is a read op...

Java NIO Buffers are used when interacting with NIO Channels. As you know, data is read from channels into buffers, and written from buffers into channels. A buffer is essential...

Java NIO Channels are similar to streams with a few differences: You can both read and write to a Channels. Streams are typically one-way (read or write). Channels can be read a...

Java NIO consist of the following core components: Channels Buffers Selectors Java NIO has more classes and components than these, but the Channel, Buffer and Selector forms the...

Java NIO (New IO) is an alternative IO API for Java (from Java 1.4), meaning alternative to the standard Java IO andJava Networking API's. Java NIO offers a different way of wor...

特性： 1，字符集编码器和解码器 2，非阻塞的IO 3，内存映射文件 4，文件加锁机制 内存映射相关： 虚拟内存机制的利用， 文件通道（channel），通道是用于磁盘文件的一种抽象，它使我们可以访...