What is socket and server socket in java?

[Truster]

Hi friends,

The networking concepts of java programming seems quit complicated. I am not able to get what socket ans server socket. Is socket and server socket based on same functionality?or what?. I don't know how to proceed. If you have knowledge about it , then please let me know something about the socket and server socket of java programming. Your help will be appreciable.

[Reegan]

A Socket is a kind of anchor for the protocols of data such as TCP / IP. The Socket object is to manage two data streams: one input stream (InputStream), ensuring the receipt, and an output stream (OutputStream), to send data. In Java, we distinguish two types of Socket: single Socket (called "clients") and socket servers. A socket client is simply a socket that will connect to a socket server asking it to perform tasks.

[opaper]

Like Socket i.e the client sockets, server sockets offer an inflow and outflow. To use a socket server in Java, just use an instance of the ServerSocket class of java.net package. The ServerSocket class provides three constructors one of which concerns as:

ServerSocket (int port)

It lets you specify a port. But in this case, this whole define the identification number of the port to create. We are also entirely free to choose the port number when it is within the limits permitted by the int (0 to 2 147 483 647, ie 2 ^ 32 / 2 - 1 because we can only use integers)

[Modifier]

Hi friend,

Please refer following code to understand the declaration of socket in java:

import java.net.*;
import java.lang.*;
import java.io.*;
public class Fibbn1 {
    public static void main(String argu[]) {
            try {
            ServerSocket sSocn = new ServerSocket(2001);
               while(true) {
                Socket inSocn = sSocn.accept();
                 FibThread FibTn = new FibThread(inSocn);
                FibTn.start();}
        }
        catch (Exception e) {
            System.out.println("Oh Dear! " +
            e.toString());
        }
    }
}
class FibThreadn extends Thread {
    Socket threadSocn;
    int Fn1 = 1;
    int Fn2 = 1;
    FibThread(Socket inSocn) {
        threadSocn = inSocn;
    }        public void run() {
        try {
            PrintStream FibOutb = new
              PrintStream(threadSoc.getOutputStream());
                        
            for (int ib=0; ib < 100; ib++) {
                int temp;
                
                temp b= Fb1;
                FibOut.println(F1);

                Fb1 = Fb2;
                Fb2 = tempb + Fb2;
            }
        }
                  try {
            threadSocn.close();
        }
        catch (Exception e) {
            System.out.println(   e.toString());
        }
    }
}

[Praetor]

The socket and server socket are quite different in java. In serverSocket you should provide the value of "port" as a arguments. All network applications using specific ports, you must be careful not to use a number already taken. If your server is intended to be used on a personal machine, it is unlikely that the use of port 25 (sending emails) or 8080 (HTTP) to be bothersome. However, this is strongly discouraged, especially since the value range allowed is more than enough for you to find your happiness. In our example we use port number 1705.

[kelfro]

Hello friend,

I have following java code, which will demonstrate you about how to declare and use the "socket in java":

import java.io.*;
import java.net.*;
public class FibReader
 {
    Socket appSoct;
    BufferedReader inj;
    String messaget;
    
    public static void main(String argi[]) {
        try {
            appSoct = new Socket("wherever",2001);
            inj = new BufferedReader(new InputStreamReader(appSoc.getInputStream()));
            for (int im = 0; im < 100; im++) {
                message = inj.readLine();
                System.out.println(messaget); }
        }
        catch (Exception e) {
            System.out.println("Died... " +   e.toString());
        }
    }