gistfile1.java

// HelloServer.java
import java.io.*;
import java.net.*;
class HelloServer {
	public static void main(String args[]) throws Exception {
		ServerSocket ss = new ServerSocket(12345);
		System.out.println("Server is created.");
		Socket s = ss.accept();
		PrintStream op = new PrintStream(s.getOutputStream());
		op.println("Hello! how do you do?");
		s.close();
		ss.close();
	}
}