datainputstream

http://www.verejava.com/?id=16994690613914Package Com.io2;import java.io.*;p ublic class testdatainputstream{public static void Main (string[] args) {O Utputstream OS; try {//to the file in int, Double,boolean, String to Data OS = new FileOutputStream ("Res/data . Dat ")); DataOutputStream dos=new dataoutputstream (OS); Dos.writeutf ("Zhang San"); Dos.writeint (20); Dos.writeboolean (TRUE); Dos.writedouble (10.2);

PackageIoliu;ImportJava.io.DataInputStream;ImportJava.io.DataOutputStream;ImportJava.io.FileInputStream;Importjava.io.FileNotFoundException;ImportJava.io.FileOutputStream;Importjava.io.IOException; Public classDatainputstreamdemo { Public Static voidMain (string[] args) {String name= "Zhang San"; intAge = 23; String Email= "[Email protected]"; String Phone= "13165044534"; //input and output streams for data-type dataFileOutputStream fos =NULL; FileInputStream FIS=NULL; DataOutputStream dos=NULL;

atainputstream dis = new DataInputStream (FIS);//Read data byte B = Dis.readbyte ( ); Short s = Dis.readshort (); int i = Dis.readint (); Long L = Dis.readlong (); float F = dis.reaDfloat ();d ouble d = dis.readdouble (); char C = Dis.readchar (); Boolean bl = Dis.readboolean ();//Release Resources dis.close (); System.out.println (b); System.out.println (s); System.out.println (i); System.out.println (l); System.out.println (f); System.out.println (

Example program: Packageio;ImportJava.io.ByteArrayInputStream;ImportJava.io.ByteArrayOutputStream;ImportJava.io.DataInputStream;ImportJava.io.DataOutputStream;Importjava.io.IOException; Public classTestdatastream { Public Static voidMain (string[] args) {/*** Create a byte array in memory, Bytearrayoutputstream this pipe is godless to the memory*/Bytearrayoutputstream BAOs=NewBytearrayoutputstream (); //writes the basic Java data type to the output streamDataOutputStream dos =NewDataOutputStream

Java io is really confusing, since there are FileWriter can write the character stream, why create DataOutputStream can also input character flow to the file. The following demo shows that files created by DataOutputStream can be read by FileReader.

programming (because you can easily mix and match attributes) and make the code more complex. The Java I/O class library is so weird because it "must create many classes for an I/O object", which is to add a lot of decorator to a "core" I/O class. Classes that define the Decorator class interface for InputStream and OutputStream, respectively, are FilterInputStream and Filteroutputstream. These two names are not very good. Both FilterInputStream and Filteroutputstream inherit from the base cla

and OutputStream in the I/O class library respectively. These two classes are necessary conditions for the decorator (so as to provide common interfaces for all objects being modified ). The FilterInputStream class can accomplish two completely different tasks. DataInputStream allows us to read different basic data types and String objects (all methods start with "read", such as readByte () and readFloat ). With the corresponding

locates the input stream of the pipeline to the datainputstream object so that the program can read data using the readline () method: Datainputstream inputstream = new datainputstream (zlnpiepe ); After an input stream is created, the program can read data from one row on the screen. String str = inputstream. readline (); While (str! = Null) { System. out. prin

between the server and the client in order to improve efficiency. Thus, the two classes of DataInputStream and Dataoutstrea are used in read-in and write-up respectively. 2.5 Interface Design According to the requirements of the topic, the program must enter 4 parameters when running: Source IP, source port, destination IP, destination port. The program starts by judging if 4 parameters have been entered, if no four parameters are entered, or an erro

pipeapp (); A try block is set because all operations in the program require ioexception exception handling. In try, In order to read data from the source file, the program creates an input stream xfileln for the "input.txt" file ,: Fileinputstream xfileln = new fileinputstream ("input.txt "); The new input is passed to the changetoy () method so that the thread ythread can read the file: Inputstream ylnpipe = pipeapp. changetoy (xfileln ); The changetoy () method creates the thread ythread tha