Java Networking

Java Networking empowers applications to communicate over a network, enabling data exchange between devices and systems. It revolves around the concept of sockets, which facilitate reliable network communication.

Example of Using Sockets in Java:

// Server Side
try (ServerSocket serverSocket = new ServerSocket(8080)) {
System.out.println(“Server is running. Waiting for a client to connect…”);
Socket clientSocket = serverSocket.accept();
System.out.println(“Client connected!”);

// Communication with the client
// …
} catch (IOException e) {
e.printStackTrace();
}

// Client Side
try (Socket socket = new Socket(“localhost”, 8080)) {
System.out.println(“Connected to the server!”);

// Communication with the server
// …
} catch (IOException e) {
e.printStackTrace();
}

Java Networking facilitates the establishment of client-server communication, where a client requests services from a server, and the server responds accordingly. It enables real-time interactions and data sharing.

Example of Client-Server Communication:

// Server Side
try (ServerSocket serverSocket = new ServerSocket(8080)) {
System.out.println(“Server is running. Waiting for a client to connect…”);
Socket clientSocket = serverSocket.accept();
System.out.println(“Client connected!”);

// Sending data to the client
OutputStream outputStream = clientSocket.getOutputStream();
outputStream.write(“Hello, Client!”.getBytes());

// Receiving data from the client
InputStream inputStream = clientSocket.getInputStream();
byte[] buffer = new byte[1024];
int bytesRead = inputStream.read(buffer);
String clientMessage = new String(buffer, 0, bytesRead);
System.out.println(“Message from the client: ” + clientMessage);

} catch (IOException e) {
e.printStackTrace();
}

// Client Side
try (Socket socket = new Socket(“localhost”, 8080)) {
System.out.println(“Connected to the server!”);

// Receiving data from the server
InputStream inputStream = socket.getInputStream();
byte[] buffer = new byte[1024];
int bytesRead = inputStream.read(buffer);
String serverMessage = new String(buffer, 0, bytesRead);
System.out.println(“Message from the server: ” + serverMessage);

// Sending data to the server
OutputStream outputStream = socket.getOutputStream();
outputStream.write(“Hello, Server!”.getBytes());

} catch (IOException e) {
e.printStackTrace();
}