FILE PERTAMA
import java.net.*;
import java.io.*;
public class ServerKu1 {
public static void main(String[] args) {
try {
ServerSocket ss = new ServerSocket(2002);
System.out.println("Menunggu Klien...");
Socket s = ss.accept();
System.out.println("Klien telah masuk");
System.out.println("Server pada port = "+
s.getLocalAddress().getHostAddress() + " : " + s.getLocalPort());
System.out.println("Client pada port = "+
s.getInetAddress().getHostAddress() + " : " + s.getPort());
PrintWriter pw = new PrintWriter(s.getOutputStream(), true);
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String greeting = "";
while(!(greeting=br.readLine()).equals("")) { pw.println(greeting); }
pw.close(); s.close(); ss.close();
} catch (Exception e) { e.printStackTrace(); }
}
}
FILE KEDUA
import java.net.*;
import java.io.*;
public class ClientKu1 {
public static void main(String[] args) {
try {
Socket s = new Socket("127.0.0.1",2002);
System.out.println("Komunikasi terhubung");
System.out.println("Client pada port = "+
s.getLocalAddress().getHostAddress() + " : "+ s.getLocalPort());
System.out.println("Server pada port = "+
s.getInetAddress().getHostAddress() + " : "+ s.getPort());
BufferedReader br = new BufferedReader( new InputStreamReader(s.getInputStream()));
System.out.println("Menunggu pesan...");
String greeting = "";
while ((greeting=br.readLine())!=null) { System.out.println(greeting); }
System.out.println("Selesai");
br.close();
s.close();
}
catch (Exception e) { e.printStackTrace(); }
}
}
FILE KETIGA
import java.net.*;
import java.io.*;
public class ServerKu2 {
public static void main(String args[]) {
int port;
ServerSocket server_socket;
BufferedReader input;
try {
port = Integer.parseInt(args[0]);
}
catch (Exception e) {
System.out.println("port = 2000 (Standarnya)");
port = 2000;
}
try {
server_socket = new ServerSocket(port);
System.out.println("Server menunggu klien di port " +
server_socket.getLocalPort());
}
catch (IOException e) {
System.out.println(e);
}
// server mondar-mandir disini
while(true) {
Socket socket = server_socket.accept();
System.out.println("Hubungan baru diterima " +
socket.getInetAddress() +
":" + socket.getPort());
input = new BufferedReader(new InputStreamReader(socket.getInputStream()));
// menampilakan data yang diterima
try {
while(true) {
String message = input.readLine();
if (message==null) break;
System.out.println(message);
}
}
catch (IOException e) {
System.out.println(e);
}
// Client menutup hubungan
try {
socket.close();
System.out.println("Client telah menutup hubungan");
}
catch (IOException e) {
System.out.println(e);
}
}
}
}
FILE KE EMPAT
import java.net.*;
import java.io.*;
public class ClientKu2 {
public static void main(String[] args) {
int port = 2002; String server = "localhost";
Socket socket = null;
String lineToBeSent;
BufferedReader input;
PrintWriter output; int ERROR = 1;
// read arguments if(args.length == 2) {
server = args[0];
try {
port = Integer.parseInt(args[1]);
}
catch (Exception e) {
System.out.println("server port = 1500 (Standarnya)");
port = 2002;
}
}
// Koneksi ke server try {
socket = new Socket(server, port);
System.out.println("Terkoneksi ke server " +
socket.getInetAddress() + ":" + socket.getPort());
}
catch (UnknownHostException e) {
System.out.println(e);
System.exit(ERROR);
}
catch (IOException e) {
System.out.println(e);
System.exit(ERROR); }
try {
input = new BufferedReader(new InputStreamReader(System.in));
output = new PrintWriter(socket.getOutputStream(),true);
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