Chat multi client - two thread read and write

Client.java

package multithreadedchat;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;

public class Client extends Thread{
	Socket socket;
	final String host = "localhost";
	final int port = 8888;
	
	@Override
	public void run() {
		super.run();
		try {
			socket = new Socket(host, port);
			new Thread(new ClientRecieveThread(socket)).start();
			new Thread(new ClientSendThread(socket)).start();
		} catch (UnknownHostException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}
	public static void main(String[] args) {
		new Client().start();
	}

}

class ClientSendThread implements Runnable{
	PrintWriter writer;
	String line;
	public ClientSendThread(Socket socket) {
		try {
			writer = new PrintWriter(new OutputStreamWriter(socket.getOutputStream()));
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	@Override
	public void run() {
		BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
		while(true){
			System.out.print("> ");
			try {
				
				line = input.readLine();
				writer.println(line);
				writer.flush();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		
	}
	
}


class ClientRecieveThread implements Runnable{
	BufferedReader reader;
	String line;
	public ClientRecieveThread(Socket socket) {
		try {
			reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	
	@Override
	public void run() {
		try {
			while((line = reader.readLine())!= null){
				System.out.println("\nServer: " + line);
				System.out.print("> ");
			}
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}
	
}

Server.java

package multithreadedchat;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;

public class Server {
	
	public static void main(String[] args) {
		ArrayList<Socket> clients = new ArrayList<>();
		Thread send = null;
		try {
			ServerSocket serverSocket = new ServerSocket(8888);
			System.out.println("Server is running on " + serverSocket.getLocalPort());
			Socket socket;
			while((socket = serverSocket.accept())!=null){
				clients.add(socket);
				System.out.println("\nClient"+socket.getPort()+" connected. NoC: "+clients.size());
				new Thread(new ServerRecieveThread(socket)).start();
				if(send!=null && send.isAlive()) send.interrupt();
				send = new Thread(new ServerSendThread(clients));
				send.start();
			}
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}
}

class ServerRecieveThread implements Runnable{
	BufferedReader reader;
	String line;
	Socket socket;
	public ServerRecieveThread(Socket socket) {
		this.socket = socket;
		try {
			reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}
	@Override
	public void run() {
		try {
			while((line=reader.readLine())!= null){
				System.out.println("\nClient["+ socket.getPort() + "]: " + line);
				System.out.print("> ");
			}
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}
	
}

class ServerSendThread implements Runnable{
	PrintWriter writer;
	String line;
	ArrayList<PrintWriter> writers = new ArrayList<>();
	public ServerSendThread(ArrayList<Socket> clients) {
		try {
			for(Socket socket: clients){
				writer = new PrintWriter(new OutputStreamWriter(socket.getOutputStream()));
				writers.add(writer);
			}
			
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	@Override
	public void run() {
		BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
		while(!Thread.currentThread().isInterrupted()){
			System.out.print("> ");
			try {
				line = input.readLine();
				System.out.println(writers.size());
				for(PrintWriter writer: writers){
					writer.println(line);
					writer.flush();
				}	
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		
	}
	
}