java io notserializableexception

when should I use IO , when to use NIO it? In this article, I'll try to clearly parse the differences between Java NIO and IO , their usage scenarios, and how they affect your code design. Java NIO and the IO The main differenceThe following table summarizes

The BufferedReader described in http://my.oschina.net/u/2263278/blog/508770 refers to one of its characteristics----when BufferedReader reads data from the input stream, if no valid data is read , where the program will block execution of the thread (using the Read () method of InputStream to fetch data from the stream, it will block the thread if there is no data in the data source), that is, the input stream described earlier, the output stream is blocked input, output. The traditional input a

Basic concept blocking and non-blocking 阻塞是进行读写时, 如果当时没有东西可读,或者暂时不可写, 程序就进入等待, 直到有东西可读或者可写为止 Synchronous and asynchronous 同步是指的是用户操作后等待或者轮询的去查看操作是否就绪 异步是指用户某动作操作后便开始做其他动作，而当这个动作操作完成的时候用户会得到这个动作完成的通知IO model Synchronous blocking IO (JAVA BIO):In this way, the user process must wait for the IO operation to co

//filereader fr=new filereader ("D:/test/s1.txt"); BufferedReader br=NewBufferedReader (ISR); OutputStreamWriter OSW=NewOutputStreamWriter (NewFileOutputStream ("D:/test/s2.txt"), "GB2312"); //FileWriter fw=new FileWriter ("D:/test/s2.txt");//S2 does not exist, it is automatically createdBufferedWriter BW =NewBufferedWriter (OSW); //2. Start reading filesString Line;//declaring variables used to hold read-out content intNum=1;//used to record the number of rows while((Line

1, read/write (input/output) is for me, not for you to manipulate the object, such as reading the file is I read the file, for me is input, and I write files, for me is the output.2, Java IO uses the packaging mode, a flow wrapper another stream, to achieve better purposes. What is the rule of a flow wrapper for another flow? Use the byte stream to read the file, FileInputStream (new file ()), which you can

Concept:NiO is the new IO, which was introduced in JDK1.4. NiO and IO have the same function and purpose, but the way of implementation is different, NIO is mainly used in blocks, so the efficiency of NIO is much higher than IO.Two sets of NiO are available in the Java API, one for the standard input and output NIO, and the other for network programming NiO.Under

a general concept of performance optimization It is generally believed that Java programs are always slower than C programs, and most people may have heard too much about this kind of advice. In fact, the situation is far more complicated than the old claims. Many Java programs are really slow, but slow speed is not an intrinsic feature of all Java programs. Many

Io (input and output) operations in java (1), iooutputIO, short for Input and Output. In java, IO involves a large range. Here we mainly discuss the reading and writing of file content.Other knowledge points will be placed in subsequent chapters (I think the article is too long and no one has the patience to go to the

The following table summarizes the main differences between Java NiO and Io, and I describe the differences in each part of the table in more detail. Copy Code code as follows: IO NIO Stream-oriented buffer Blocking IO non-blocking IO No selector

IO, short for Input and Output. In java, IO involves a large range. Here we mainly discuss the reading and writing of file content. Other knowledge points will be placed in subsequent chapters (I think the article is too long and no one has the patience to go to the end) There are two main types of operations on file content: They are:　　Ghost stream 　　Byte strea

1 PackageCom.sxd.test.util;2 3 ImportJava.io.BufferedReader;4 ImportJava.io.BufferedWriter;5 ImportJava.io.File;6 ImportJava.io.FileInputStream;7 ImportJava.io.FileOutputStream;8 Importjava.io.IOException;9 ImportJava.io.InputStreamReader;Ten ImportJava.io.OutputStreamWriter; One A Importorg.junit.Test; - - Public classCreateinsert { the - @Test - Public voidTest ()throwsioexception{ - + //1. Reading files -File File =NewFile ("D:/new4.txt"); +InputStreamReader Read =N

The byte array input stream creates a byte array buffer in memory, and the data read from the input stream is saved in the byte array buffer. There are several ways to create a byte array input stream Object.The receive byte array is created as a parameter:New Bytearrayinputstream (byte [] a);Another way to create this is to receive a byte array, and two shaping variables off, Len,off represents the first read byte, and Len represents the length of the read Byte.New Bytearrayinputstream (byteint

1. Io Stream (Overview of IO Stream and its classification) 1. Concept IO streams are used to process data transfer between devices The Java operation of the data is streamed through the way The classes that Java uses to manipulate the flow ar

Java IO learning notes (1), javaio learning notesBasic knowledge 1. stream classification all streams are in java. io packages are divided by stream direction: input stream and output stream are divided by Data Processing Unit: byte stream and worker stream according to different functions: node stream and abstract cla

Original link: The difference between Java NiO and IOThe following table summarizes the main differences between Java NiO and Io, and I'll describe in more detail the differences in each section of the table.Copy CodeThe code is as follows:IO NIOStream-oriented bufferingBlocking IO non-blocking IONo selectorStream-orie

It is the well-known "Murphy's Law" to be afraid of what to do. Java Foundation covers all aspects, dare to say that the Java foundation of the people are not just graduating students, is working n years of programmers. Programmers who work n years don't even dare everyone to say that Java is a solid foundation, or even proficient, often just "without him"-skille

: node flow and processing flow.Output stream:Input stream:So both the input and the output are from the point of view of the program.BYTE stream: A read-in or read-out is a 8 -bit binary.Character Stream: A read-in or read- out is a binary binary.The principle of a byte stream and a character stream is the same, except that the units are handled differently. The suffix is stream is a byte stream, and the prefix is Reader, andWriter is a stream of characters.Node stream: Directly connected to t

Basic Java IO knowledge (I)Java IO Overview I/O is the core issue of human-computer interaction, Because I/O is the main channel for computers to acquire and exchange data. The entire IO process is the source data ---> program ---> destination

Java. io. IOException: the software in your host suspends a established connection. 1. Error description [19:13:48-ddmlib] the software in your host suspends a established connection. Java. io. IOException: the software in your host suspends a established connection. At sun. nio. ch. socketDispatcher. write0 (Native M

The traditional IOStream-oriented input and output systems such as InputStream, OutputStream, Reader, and writer in Java are considered traditional IO. Traditional IO is a blocking input and output, and is handled by byte movement, that is, traditional IO can only process one byte at a time and is inefficient.New IOBot