java nio book

selected Selectionkey collection. Returns the selected key set for this selector int Select () Monitor all registered channel, and when they have IO operations that need to be processed,The method returns, and will add the selected Selectionkey to the dueIn the Selectionkey collection, the method returns the number of these Channel numbers. int Select (Long timeout) You can set the time-out select () operation int Selectnow () Executes a

File.length return the same result, both the size of the file and the number of bytes.Truncate of file channelsintercepts files. When you intercept a file, you must specify a length. As follows:channel.truncate(10);If the given size is less than the current size of the file, the file is truncated and all bytes after the new end of the file are discarded. If the given size is greater than or equal to the current size of the file, the file is not modified . In either case, if the file location of

Serversocketchannel.register (selector, selectionkey.op_accept); the //polling for an event that is already ready on the picker the while(Selector.select () >0){ About //gets all the registered selection keys in the current selector (Ready listener events) theIteratorSelector.selectedkeys (). iterator (); the while(It.hasnext ()) { the //get ready-to-go events +Selectionkey SK =It.next (); - //determine what the event is,

Java NIO (New io/non-blocking io) is an IO API introduced from the JDK version 1.4, which replaces the standard Java IO API. NIO has the same effect and purpose as the original standard IO, but it is completely different in terms of usage and read and write, and NIO supports

Onecoder this weekend, and the new home does not have a network, the task of this week's translation has not been completed, the next Monday onwards, first on a comparison of Oio and NiO small research.Netty not only supports the NIO model in Java, but also provides support for the OIO model. (New io vs old io).First, in Netty, switching between the OIO and

Java NiO begins to support Scatter/gather,scatter/gather used to describe the operation of reading or writing to channel from channel: Channel in Chinese often translated as channels. Scatter (scatter) reads from channel refers to writing read data to multiple buffer during a read operation. Therefore, channel will "scatter (scatter)" The data read from channel to multiple buffer. A clustered (gather) wri

Introduction to Java NIO (iii) from theory to practice: using NIO to read and writeGuibin.beijing@gmail.com OverviewReading and writing are the most basic IO processing. Reading from a Channel is very simple. We only need to create a Buffer and then require the Channel to read data to the Buffer. Writing is also very simple. You also need to create a Buffer to fi

Knowledge of java in 10 minutes-NIO and java in 10 minutesI. Introduction Nio is a very important part of java's IO framework. Its core is to provide non-blocking IO processing methods. The most typical application scenario is to process network connections. Many people can talk about

Java NIO (New Input/output)------------is introduced into J2SE 1.4 in 2002. The goal of Java NIO is to improve the performance of I/O-intensive tasks on the Java platform. Ten years later, many Java developers still don't know how

Java NiO provides a different way of doing IO than standard IO: Channels and buffers (channels and buffers): Standard IO operates on byte streams and character streams, whereas NiO operates on channels (Channel) and buffers (buffer), which are always read from the channel to the buffer or written from the buffer to the channel.Asynchronous IO (Asynchronous IO):

Tinking in Java --- NIO of Java and Object serialization I/O in the previous blog is called classic I/O, because most of them have been created since Java1.0. Today, this blog is about NIO, therefore, NIO is a series of improved input/output processing functions provided by

I spent two weeks in my spare time reading Java NIO. In general, this book details NIO and focuses on it without too much nonsense, it's just that the translation of the Chinese version is really hard to see, and the English level is too low to be able to help, and I finally insisted on reading it. The focus of the

Java advanced ------ Java NIOIntroduction to Java NIOI/O I/O or input/output refers to the interface between the computer and the external world or between a program and the rest of the computer. It is critical to any computer system, so all I/O entities are actually built in the operating system. A separate program generally allows the system to do most of the w

The Java nio:channels and buffers (channel and buffer) Standard IO operates on byte streams and character streams. NIO is based on channels (Channel) and buffers (buffer), and the data is always read from the channel to the buffer or written to the channel from the buffer. java nio:non-blocking io (non-blocking IO)