Java application

package javaapplication124;

import java.io.*;

public class JavaApplication124 {


    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader (new InputStreamReader(System.in));

        displayStartMenu();
        System.out.print("Enter your choice: ");
        int choice = Integer.parseInt(br.readLine());

        Player player;

        if (choice == 1){
            player = new Player();
            player.hp = 100;
            player.baseAtk = 5;
            player.baseDef = 5;
            player.weapon = "";
            player.armor = "";


            while(true){

                System.out.println("Battle Start Enemy 1");
            }

        }

        else if (choice == 5)
            System.exit (0);
    }

    public static void displayStartMenu (){
        System.out.println("Welcome to Battle System Prototype v1\n"
                + "[1] Start Game\n"
                + "[5] Exit");

    }

}