Socket communication in Java enables communication between two endpoints over a network. There are two main types of sockets: TCP sockets and UDP sockets. Let's explain both types with examples: TCP Socket Communication: 1. **Server Side**: - The server creates a `ServerSocket` object to listen for incoming connections on a specific port. - When a client connects, the server accepts the connection and creates a `Socket` object to communicate with the client. - The server reads from and writes to the socket's input and output streams to communicate with the client. import java.io.*; import java.net.*; public class TCPServer { public static void main(String[] args) throws IOException { ServerSocket serverSocket = new ServerSocket(12345); System.out.println("Server started. Waiting for client..."); Socket clientSocket = serverSocket.accept(); System.out.println("Client connected."); BufferedReader in = new Bu
The Java compilation process involves several steps, known as the Java compilation and execution lifecycle. Here's an overview: 1. Writing Java Source Code (HelloWorld.java): // HelloWorld.java public class HelloWorld { public static void main(String[] args) { System.out.println("Hello, World!"); } } Programmers write Java code using a text editor or an integrated development environment (IDE). The code is typically saved in a file with a .java extension. This file contains the human-readable Java source code. 2. Compilation (Java Compiler - javac): $ javac HelloWorld.java The Java source code is compiled by the Java Compiler (javac). During compilation, the compiler performs several tasks: Syntax Checking: Ensures that the code follows the correct syntax defined by the Java language. Semantic Analysis: Checks for semantic errors, ensuring that the code makes sense in the context of the Java language. Bytecode Generation: Converts the Java source code