twitch stream summary

Byte stream summary, byte stream Summary Byte stream Summary InputStream (Abstract class: indicates the parent class of all byte input streams.) |-FileInputStream (It is mainly used for raw byte streams such as image data.) |-Filt

A stream is an abstract concept of a sequence of bytes.The file is the static storage form of the data, and the stream refers to the form of transmission.The flow class is divided into two categories: node stream class and Filter flow class (also called process Flow Class).The program is used to directly manipulate the target device's corresponding class called N

generally only need to master 17 kinds offileinputstream//file byte output streamfileoutputstream//file byte output streamFileReader//file character input streamFileWriter//file character output streambufferedreader//Cache character Input streambufferedwriter//Cache Character Output streambufferedinputstream//Cache byte Input streambufferedoutputstream//Cache byte output streamdatainputstream//Data input Streamdataoutputstream//Data output streamobjectinputstream.//Object Input Streamobjectoutp

Java IO Stream Learning Summary one: input and output stream Reprint please indicate source: http://blog.csdn.net/zhaoyanjun6/article/details/54292148This article is from "Zhaoyan's blog" Java Flow class diagram structure:Concept and function of flowA stream is a set of sequences of bytes that have a star

manipulate files, so the constructor receives two types of parameters: A. string file path; B.file object. The object can read and write to the file, and can specify the mode of operation when the object is instantiated (R,RW) Note: When the object is instantiated, it is created automatically if the file to be manipulated does not exist, and if the file exists, the write data does not specify a location and is written from scratch, overwriting the original content. can be used for mult

the text file (5 ways)2:io Flow Summary (master)IO stream|--Byte stream|--byte input streamInputStreamint read (): reads one byte at a timeint read (byte[] bys): reads one byte array at a time|--fileinputstream|--bufferedinputstream|--byte output streamOutputStreamvoid write (int by): Write one byte at a timevoid Write (byte[] bys,int. index, int len): Write one

2015211233090 Java programming 1st weekly learning summary and javaio stream learning Summary 1. Learning Summary A preliminary understanding of Object-Oriented Programming Use eclipse to associate git to manage code Java 2. Written Assignments P: Why can java programs run across platforms? What are the steps for execu

transform stream. The Read method in the transform stream. has been integrated into the Code table, the underlying invocation of the Read method of the byte stream will fetch one or more bytes of data to be stored temporarily, and to check the specified encoding table, if the encoding table is not specified, check the default Code table. Then the Read method of

the location; 4) access to all read () and write () operations in DataInputStream and DataOutputStream; 5) In the file Move method: A. Long Getfilepointer (): Returns the current position of the file pointer. B. void seek (Long POS): Sets the file pointer to the given absolute position. C. Long Length (): Returns the length of the file. 12. Encoding problem: Encoding: Each character corresponds to an integer. Different countries have different codes, when the encoding and decodin

manipulate files, so the constructor receives two types of parameters: A. string file path; B.file object. The object can read and write to the file, and can specify the mode of operation when the object is instantiated (R,RW) Note: When the object is instantiated, it is created automatically if the file to be manipulated does not exist, and if the file exists, the write data does not specify a location and is written from scratch, overwriting the original content. can be used for mult

with an internal pointer. The object features: The object can only manipulate files, so the constructor receives two types of parameters: A. string file path; B.file object. The object can read and write to the file, and can specify the mode of operation when the object is instantiated (R,RW) Note: When the object is instantiated, it is created automatically if the file to be manipulated does not exist, and if the file exists, the write data does not specify a location and is

object features: The object can only manipulate files, so the constructor receives two types of parameters: A. string file path; B.file object. The object can read and write to the file, and can specify the mode of operation when the object is instantiated (R,RW) Note: When the object is instantiated, it is created automatically if the file to be manipulated does not exist, and if the file exists, the write data does not specify a location and is written from scratch, overwrit

class A file class is an object that encapsulates files and folders in a file system. You can use the object idea to operate files and folders. File class stores various metadata information about a file or directory, including the file name, file length, last modification time, whether the file is readable, and obtaining the path name of the current file, determine whether a specified file exists, obtain the file list in the current directory, and create or delete files and directories.9. rand

FilePath) {try {FileOutputStream fos = new FileOutputStream (FilePath);Fos.write (ARRAY0);Fos.close ();} catch (Exception e) {E.printstacktrace ();}}3: Get File sizepublic static String bytes2kb (long bytes) {BigDecimal filesize = new BigDecimal (bytes);BigDecimal megabyte = new BigDecimal (1024 * 1024);Float returnvalue = Filesize.divide (megabyte, 2, BIGDECIMAL.ROUND_UP). Floatvalue ();if (ReturnValue > 1)Return (returnvalue + "MB");BigDecimal kilobyte = new BigDecimal (1024);returnvalue = Fi

whether the specified file exists, obtains a list of files in the current directory, and creates and deletes files and directories.9.RandomAccessFile classThis object is not a member of the flow system, it encapsulates a byte stream, and also encapsulates a buffer (a character array), manipulating the data in a character array with an internal pointer. The object features: The object can only manipulate files, so the constructor receives two

manipulate files, so the constructor receives two types of parameters: A. string file path; B.file object. The object can read and write to the file, and can specify the mode of operation when the object is instantiated (R,RW) Note: When the object is instantiated, it is created automatically if the file to be manipulated does not exist, and if the file exists, the write data does not specify a location and is written from scratch, overwriting the original content. Can be used for mult

an internal pointer. The object features: The object can only manipulate files, so the constructor receives two types of parameters: A. string file path; B.file object. The object can read and write to the file, and can specify the mode of operation when the object is instantiated (R,RW) Note: When the object is instantiated, it is created automatically if the file to be manipulated does not exist, and if the file exists, the write data does not specify a location and is writt