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Client.java
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Client.java
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import java.io.*;
import java.net.Socket;
import java.util.Scanner;
import java.io.BufferedReader;
import java.io.BufferedWriter;
public class Client {
private Socket socket;
private BufferedReader bufferedReader;
private BufferedWriter bufferedWriter;
private String username;
private String messageToSend;
public Client(Socket socket , String username){
try{
this.socket = socket;
this.bufferedWriter= new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
this.bufferedReader=new BufferedReader(new InputStreamReader(socket.getInputStream()));
this.username=username;
}catch(IOException e){
closeEverything(socket, bufferedReader,bufferedWriter);
}
}
public void sendMessage(){
try{
bufferedWriter.write(username);
bufferedWriter.newLine();
bufferedWriter.flush();
Scanner scanner =new Scanner(System.in);
while(socket.isConnected()){
String messageToSend=scanner.nextLine();
bufferedWriter.write(username +":"+ messageToSend);
bufferedWriter.newLine();
bufferedWriter.flush();
}
}catch(IOException e){
closeEverything(socket, bufferedReader,bufferedWriter);
}
}
public void listenForMessage(){
new Thread(new Runnable() {
@Override
public void run() {
String msgFromGroupChat;
while(socket.isConnected()){
try{
msgFromGroupChat=bufferedReader.readLine();
System.out.println(msgFromGroupChat);
}catch(IOException e){
closeEverything(socket, bufferedReader, bufferedWriter);
}
}
}
}).start();
}
public void closeEverything(Socket socket,BufferedReader bufferedReader,BufferedWriter bufferedWriter){
try{
if(bufferedReader !=null){
bufferedReader.close();
}
if(bufferedWriter !=null){
bufferedWriter.close();
}
if(socket != null){
socket.close();
}
}catch(IOException e){
e.printStackTrace();
}
}
public static void main(String[] args) throws IOException {
Scanner scanner=new Scanner(System.in);
System.out.println("Enter nickname for group chat:");
String username= scanner.nextLine();
Socket socket =new Socket("localhost",5000);
Client client =new Client(socket, username);
client.listenForMessage();
client.sendMessage();
}
}