stream sets

　　the input stream output stream is a program as a reference point. I. What is I/OI/O operations in Java mainly refer to using Java for input and output operations. All of Java's I/O mechanisms are input and output based on data streams that represent the flow sequences of character or byte data. Java's I/O stream provides a standard way to read and write data.A

Packagecn.itcast.io.c.bytestream.test;ImportJava.io.File;ImportJava.io.FileInputStream;Importjava.io.FileNotFoundException;ImportJava.io.FileOutputStream;Importjava.io.IOException; Public classCopyfilebybuffertest {/** * @paramargs *@throwsIOException*/ Public Static voidMain (string[] args)throwsIOException {File srcfile=NewFile ("E:\\1.mp3"); File DestFile=NewFile ("E:\\copy_1.mp3"); //2, explicit byte stream input

First lecture object serialization (persisted)First, the summary: is to hold the object in the hard disk, can keep the data; key classes: ObjectInputStream and ObjectoutpurstreamTwoKeyword: ObjectOutputStream: Method has Writerobject () Read ObjectInputStream method has ReadObject () The object being serialized requires Implements SerializableThe class to be serialized needs to be implemented serializableIt is equal to a pinch, which is used for identification, and changes t

The difference between the byte stream and the character stream: direct according to the picture to draw the conclusion: conclusion: The byte stream does not use the buffer in the operation itself, it is directly operated in the file itself, and the character stream uses the buffer in the operation, through the buffer

1. Overview of Bufferedoutputstream/bufferedinputstream (byte buffer stream)It is really much faster to define an array than it was to read one byte at a time, so it seems that a buffer is still very good. Since this is the case, then, when Java began to design, it also took into account this problem, it is specifically provided with a buffer byte class. This class is called: Buffer Class (High efficiency Class)　　Write Data : Bufferedoutputstream　　Rea

1. The difference between byte and char: binary encoding is used for direct transmission when word Throttling is used, and the encoding problem of the local system is involved when Byte and Char are used, some APIs in Java I/o Perform Stream Conversion Based on the parameter configurations of the operating system or JVM. This simplifies some programming processes. However, in network communication, we strongly recommend that you use byte streams to re

Print Flow:The print stream is the most convenient class for outputting information, note that contains the byte print stream printstream and the character print stream: PrintWriter. The print flow provides a very convenient printing function,You can print any type of data information, such as: Decimal, Integer, String.Review:Before printing the information need

The Readline method is the method in the bufferedreader class of the bytes stream. The keyboard read method is the byte stream inputstream method. Can I change byte stream to the bytes stream and use the Readline method of the SWAp stream buffer? Inpustream in = system. In;

Byte stream-byte stream Package Com. CMM. io4; Import Java. Io .* ; Public Class Fileio { /** * @ Param ARGs * @ Author CMM * @ title: fileoutputstream fileinputstream -- byte stream */ Public Static Void Main (string [] ARGs) Throws Exception { // Todo auto-generated method stub // Outputstream out = NULL; // Out = new fileoutputst

@1: Byte stream:Java.io.InputStream:Public abstract class InputStreamThis abstract class was the superclass of all classes representing an input stream of bytes.Java.io.OutputStream:Public abstract class OutputStreamThis abstract class was the superclass of all classes representing an output stream of bytes.InputStream is the ancestor of all byte input streams, and OutputStream is the ancestor of all byte o

One of the key areas of Java learning: OutputStream byte output stream usageFileOutputStream: Sub-class, write the channel of the dataSteps:1. get the target file2. Create a channel (if there is no target file, it will be created automatically)3. writing data write ()4. Releasing ResourcesAttention:(1) if the target file does not exist, it will create a target file by itself(2) if the target file exists, first empty the data, then write the data(3) to

Because of a project, you have to save the picture to the database and then read it from the database as needed. At first, I thought it was simple, not just a stream. In fact, it's very simple, too. A lot of code, but it's all pits!Look at the source of the timage, there is a loadfromstream and Savetostream under the picture.graphic. If you are not mistaken, then use these two functions directly. So, I did a demo test.Put two timage.timage1 in the dem