Client.java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import java.util.Scanner;

public class Client {

    public static void main(String[] args) throws IOException {
	// write your code here
        String host = "127.0.0.1";
        int port = 4001;
        try (Socket socket = new Socket(host, port)) {
            PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
            BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            Scanner scanner = new Scanner(System.in);
            String line = "";
            String input = "";
            while(!input.equalsIgnoreCase("quit")){
                line = in.readLine();
                //print response from client
                if (line.trim().equals("SETPHRASE")){
                    System.out.print("Enter a phrase for your opponent to guess: ");
                    input = scanner.nextLine();
                    //send the secret phrase to the server
                    out.println(input);
                    out.flush();
                    System.out.println("Got it.  Your secret phrase is: " + input);
                    System.out.println("Waiting for your opponent to guess.");
                } else if (line.trim().equals("GUESS")) {
                    System.out.print("Guess a letter: ");
                    input = scanner.nextLine();
                    out.println(input);
                    out.flush();
                } else if (line.trim().equals("GUESSAGAIN")) {
                    System.out.print("You already guessed that letter. Guess again: ");
                    input = scanner.nextLine();
                    out.println(input);
                    out.flush();
                } else if (line.trim().equals("ENDGAME")) {
                    System.exit(0);
                } else {
                    System.out.println(line);
                }

            }

            scanner.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}