Transfer file between client to server in java socket

How to transfer file between client to server in java socket?

Description:
This project aims to create a simple Java application that enables users to transfer files over a socket connection. It provides a user-friendly interface for selecting a file and sending it to a server using socket communication.
Steps:

Step 1

Open the Project in IDE:

Launch your preferred Java IDE (e.g., Netbeans, Eclipse).
Open the project by selecting the project folder.

Step 2

Create the Necessary project folder:

Create the project File_Tranfer.
Create the java class Client.java.
Create the java class Server.java.
Create the java class MyFile.java.

Step 3

Create the Client side Code:

Import the necessary packages(Swing, awt, io, net.Socket).
Set the Frame, size of the frame and layout for client.
Set the Label, font of the label and Border for Title of the frame.
Create the panel for button and create the button for send one file.
Add buttons(send file and choose file) to the Panel.

Step 4

Add ActionListener Property for ChooseFile:

Add JfileChooser property to choose one particular file.
Create a method actionPerformed to perform for choose one file.

Step 5

Add ActionListener Property for SendFile:

Create a method actionPerformed to perform for send one file.
If the file is null to print choose the file.
else send the file to the server by using FileInputStream and DataOutputStream
Create the client side Socket by using localhost and port number(1234).

Step 6

Add Everything to the Frame:

Add jlTitle to the frame.
Add jlFileName to the frame.
Add jpButton to the frame
Set the frame visible.

Step 7

Create the Server side Code:

Import the necessary packages(Swing, awt, io, net.Socket, util).
Create the ArrayList for listing out the id, name, data, fileExtension.
Set the Frame, size of the frame and layout for server.
Set the panel and scrollPane vertically.
Set the label for jlTitle.
Set the Button for save the file.
Add all the property to the Frame.
Create the server socket by using port number(1234).

Step 8

Create stream to receive data from the client through the socket:

DataInputStream method is used to read the input data.
If the file exists and do some operation for the byte data.
Add the new file to the array list which holds all our data.
Add ActionListener Property for SaveFile.

Step 9

Add Everything to the Frame:

Add jlTitle to the frame.
Add jScrollPane to the frame.
Add jbSaveFile to the frame
Set the frame visible.

Step 10

Create the MyFile Code:

Declaring the variables(id, name, data, fileExtension).
Creating the constructor for declaring object of the variables.
Set all the variables(setID, setName, setData, setFileExtension) as void.
get all the variables(getID, getName, getData, getFileExtension).

Step 11

Run the Client Application and Server Application:

Run the main method in the Client Class.
Run the main method in the Server Class.

Sample Code

package com.mycompany.simple;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
public class Simple extends JFrame {
private JList fileList;
private DefaultListModel listModel;
public Simple() {
super("Client Side");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(400, 300);
setLocationRelativeTo(null);
listModel = new DefaultListModel<>();
JScrollPane scrollPane = new JScrollPane(fileList);
setLayout(new BorderLayout());
username = rs.getString(1);
add(scrollPane, BorderLayout.CENTER); loadLocalDrive();
loadLocalDrive();
setVisible(true);
}
private void loadLocalDrive() {
File localDrive = new File("/home/user13/Downloads");
if (localDrive.isDirectory()) {
File[] files = localDrive.listFiles();
if (files != null) {
for (File file : files) {
listModel.addElement(file.getName());
}
}
}
}
public static void main(String[] args) {
SwingUtilities.invokeLater(() -> new Simple());
JFrame f = new JFrame();
JPanel contentPanel = new JPanel(new BorderLayout());
JTextArea textArea = new JTextArea();
JScrollPane scrollPane = new JScrollPane(textArea);
contentPanel.add(scrollPane, BorderLayout.CENTER);
JPanel bottomPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT));
JButton yourButton = new JButton("save");
bottomPanel.add(yourButton);
contentPanel.add(bottomPanel, BorderLayout.SOUTH);
f.setContentPane(contentPanel);
yourButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textArea.append("Button Clicked!\n");
}
});
f.setVisible(true);
}
}