java read file from network device

Question

Can someone help me to find a tutorial or sample java code to

read a file from any machine which is in the same network

Answer 1

This is not that simple! To use Server Client Aplications you need a Network API.
I have 1 by DeBukkit and an extended version. If you would to send Files I will suggest my one (Server Client Extended .jar) becazse there is an Option to send Files (FilePacket.java).
This are the links to the libs: All Libs

Code for Server for Client Server Extended:

public class TestServer extends Server {

    public TestServer() {
        super(29898, true, true,true);
        registerMethod("bt", new FileReciver() {

            @Override
            public void onCompleteRecive(FileInfo data) {
                System.out.println("Completely recived : "+data);
                Path p = Paths.get(data.getName());
                try {
                    Files.createFile(p);
                    Files.write(p, data.getContent());
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
             /**
             * @see com.bebukkit.niton.network.packets.buffer.BufferedPacketReciver#run(com.bebukkit.niton.network.packets.Packet, java.net.Socket)
             */
            @Override
            public void run(Packet msg, Socket socket) {
                super.run(msg, socket);
                sendMessage(new Packet("", null), socket);
            }
        });
    }

    @Override
    public void preStart() 
    {
        registerMethod("msg", new ReciveMethod() {

            @Override
            public void run(Packet msg, Socket socket) {
                broadcastMessage(msg);
            }
        });
    }

    @Override
    public void onWrongDataPacketException(ClassNotFoundException e) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onReceivePacketError(IOException e) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onPacketReckognized(ServerSocket socket) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onPacketSendException(Exception e, Packet message, Socket socket2) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onSendPacketToNotConnectedClient(Packet message, Socket socket2) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onBrodcast(Packet pack) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onServerStartError(IOException e) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onServerStop() {
        // TODO Auto-generated method stub

    }

}

Code for Client:

package com.bebukkit.niton.network.test;

import java.io.IOException;
import java.io.Serializable;
import java.net.Socket;
import java.util.Scanner;

import com.bebukkit.niton.network.Client;
import com.bebukkit.niton.network.packets.Packet;
import com.bebukkit.niton.network.packets.ReciveMethod;

public class TestClient extends Client {

    public TestClient() {
        super("localhost", 29898, 5000, false,true);
        registerMethod("msg", new ReciveMethod() {

            @Override
            public void run(Packet msg, Socket socket) {
                System.out.println(msg.getData());
            }
        });
        registerMethod("replay", new ReciveMethod() {

            @Override
            public void run(Packet msg, Socket socket) {
                System.out.println("REREplay");
            }
        });
    }

    @Override
    public void onSocketClosingFail() {
        // TODO Auto-generated method stub

    }

    @Override
    public void onLoginPacketSendingFailed(IOException ex) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onConnectionError(IOException ex) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onMessageReciveError(Exception ex) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onPacketSendError(Exception ex, Packet pack) {
        // TODO Auto-generated method stub

    }
    @Override
    public void start() {
        super.start();
    }

}

You need a seperated Server + Client Starter:

package com.bebukkit.niton.network.test;

public class ServerStarter {

    public static void main(String[] args) {
        new TestServer();
    }

}

Client:

package com.bebukkit.niton.network.test;

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;

import javax.swing.JFileChooser;

import com.bebukkit.niton.network.packets.Packet;
import com.bebukkit.niton.network.packets.buffer.BufferedPacket;
import com.bebukkit.niton.network.packets.file.FileInfo;
import com.bebukkit.niton.network.packets.file.FilePacket;

public class ClientStarter {

    public static void main(String[] args) throws IOException {
        TestClient tc = new TestClient();
        tc.start();

        new Thread(new Runnable() {

            @Override   
            public void run() {
                try {
                    Thread.sleep(3000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                JFileChooser c = new JFileChooser("Choose a file to upload");
                c.setFileSelectionMode(JFileChooser.FILES_ONLY);
                c.showDialog(null,"Upload");
                File f = c.getSelectedFile();
                try {
                    tc.sendMessage(new FilePacket("file", f));
                    tc.sendMessage(new Packet("replay","test"));
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }).start();

    }

}