Skip to main content

Java networking : Sending and Receiving file

We can transfer file from one system to another sysem useing java program. here is an example where one program will read file from local machine and sends it to receiving program. Other receiving program copy all contents reciverd from remote progam and writes it to file.

FileSender class is working as client and FileReceiver class working as server. Here , 192.168.0.1 is address of machine where FileReceiver program is running and it can be changed accourding to your machine. 1234 is port number at which server program is listening for client reque

FileSender.java


package network;
import java.io.*;
import java.net.*;
import java.util.*;
public class FileSender{
    public static void main(String ar[])throws Exception{
        Socket clientSocket=new Socket("192.168.0.2",1234);
        //InputStream in=clientSocket.getInputStream();
        OutputStream out=clientSocket.getOutputStream();
        
        //PrintStream ps=new PrintStream(out);
        
        FileInputStream fis=new FileInputStream("F://Test.java");
        int x=0;
        while(true){
            x=fis.read();
            if(x==-1)break;
            out.write(x);
        }
        out.close();
    }
}

FileReceiver.java




package network;
import java.io.*;
import java.net.*;
import java.util.*;
public class FileReceiver{
    public static void main(String ar[])throws Exception{
        ServerSocket ss=new ServerSocket(1234);
        Socket clientSocket=ss.accept();
        InputStream in=clientSocket.getInputStream();
        //OutputStream out=clientSocket.getOutputStream();
        FileOutputStream fos=new FileOutputStream("rec.txt");
        int x=0;
        while(true){
            x=in.read();
            if(x==-1)break;
            fos.write(x);
        }
        fos.close();
    }
}

Comments

Rajeev Ulaganathan said…
Hi.. sorry, i have tried your program, but it result an empty file only. . it consists nothing . .

Pls Help me. .
Paddy @ Mexico said…
You have to FLUSH the data before you close the Stream.

fos.flush();
Unknown said…
Hi, If i want to send jar file then how it possible through this code? because i tried to send jar file but it is failing in between and sometimes complete file will not be received. please help out in this problem
Unknown said…
Hi am trying to send the jar file through this code, sometimes it will not receive full file or sometimes it will fail to transfer please help me out in this problem.
Unknown said…
Hi Please Help me i was unable to get
Unknown said…
Hi Please help me iam not getting anything and getting exceptions

Popular posts from this blog

Using HyperSQL (HSQLDB)

HSQLDB is a portable RDBMS implemented in pure java. It can be embedded with your application as well as can be used separately. It is very a small database that supports almost all features of the standard database system. It comes with small jar file that can be found in lib folder. The HSQLDB jar package is located in the /lib directory of the ZIP package and contains several components and programs. Core components of jar file are : HyperSQL RDBMS Engine (HSQLDB), HyperSQL JDBC Driver, Database Manager, and Sql Tool. Installing and Using Download: download latest release of HyperSQL database from http://hsqldb.org website and extract it. You will see following contents. Here "bin" directory contains some batch files those can be used to run a swing based GUI tool. You can use runManagerSwing.bat to connect to database, but database must be on before running it. Directory lib contains File hsqldb.jar . It is the database to be used by you. Running database First

In Process Mode of HSQLDB in web application.

If you want to use the database into your web application, you can use the HSQLDB in In_Process mode. In this mode, you can embed the HSQLDB into your web application and it runs as a part of your web application programm in the same JVM. In this mode, the database does not open any port to connect to the application on the hosing machine and you don't need to configure anything to access it. Database is not expposed to other application and can not be accessed from any dabase tools like dbVisualizer etc. In this mode ,database will be unknown from any other person except you. But in the 1.8.0 version, you can use Server intance for external as well as in process access.  To close the databse, you can issue SHUTDOWN command as an SQL query.   In the in-process mode, database starts from JDBC with the associated databse file provided through  connection URL. for example   DriverManager.getConnection("jdbc:hsqldb:mydatabase","SA","");   Here myd

How to handle values from dynamically generated elements in web page using struts2

Some time you will see the form containing the button " Add More " . This facility is provided for the user to get the values for unknown number of repeating for some information. for example when you are asking to get the projects details from user, you need to put the option to add the more project for the user since you don't known how many projects user have. In the HTML form, you repeat the particular section to get the multiple values for those elements. In Html page , you can put the option to add new row of elements or text fields by writing the java script or using JQuery API. Now, the question is that how to capture the values of dynamically generated text fields on the server. Using the servlet programming you can get the values by using getParameters() method that resultants the array of the parameter having the same name. But this limit you to naming the text fields in the HTML form. To ally this approach, you have to take the same name for t