All about John Michaels

How to take user input as integers?

Well... in order to read something from the user, you need to import the scanner. You would type above your class:
Then you would need to initialize the scanner object as so:
"reader" in the above line can be anything you want.
Now Lets pretend you're asking the person to enter the two integers:
After this you will need to read the two integers. You do this with the scanner function nextInt(); like so:

Bear in mind, it's "reader." because we called initialized the scanner object as reader. If it was something else, we would type [something else].nextInt();

No problem man. It's tough being a newbie. ;)

14 years ago

Beginning Java

Help with my game.

Thank you Fred. But what if I plan on making a very small website, one that might only have a few people logged on at any given time. Also, I don't plan to have that many registered users. It's just something basic, something my friends and I can use. You register, you place a bet, people can accept, and one party wins. The program does this and also keeps track of who owes who money. Is my sql necessary? Or would it make more sense to do something else, something a bit simpler? Should I just learn it regardless, as it would be beneficial to know for future projects? And do you have to pay?

14 years ago

Beginning Java

Help with my game.

Thank you guys. BTW, what is my sql exactly? Is it what I need if I want to keep track of multiple users simultaneously?

14 years ago

Beginning Java

PLEASE HELP

Hello. I'm creating a game where people can set up an account. Their registration information includes but is not limited to a login and a password. The login and the password are used to sign in. I store the sign in information in a player object, and each player object is stored in an Array List called players. How do I prevent the player objects from being deleted when I compile the program. Am I doing this the right way? Should I be storing the players sign in information in a file? If so, I'm not sure how to do this. Please help. Thank you. My code:

public class player {
private String firstName;
private String lastName;
private String login;
private String password;
private double balance;
public player(String f, String l, String log, String p, double b) {
firstName = f;
lastName = l;
login = log;
password = p;
balance = b;
}
public player(String f, String l, String log, String p) {
firstName = f;
lastName = l;
login = log;
password = p;
balance = 100;
}
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
public String getLogin() {
return login;
}
public String getPassword() {
return password;
}
public double getBalance() {
return balance;
}
}
import java.util.Scanner;
import java.util.ArrayList;
public class diceGambling {
public static void main(String[] args) {
Scanner reader = new Scanner(System.in);
ArrayList players = new ArrayList();
boolean lobby = false;
int choice = 0;
while(lobby == false) {
choice = startUp();
if(choice == 1)
{
for(int i = 0; i < 3; i++) {
if(login(players) == false)
System.out.println("Incorrect login. Try again.");
else lobby = true;
}
}
else if(choice == 2) {
players.add(signUp());
lobby = true;
}
}
System.out.println(lobby());
}
public static int startUp() {
Scanner reader = new Scanner(System.in);
int x = 0;
while ((x != 1) && (x != 2)) {
System.out.println("Press the corresponding number for the option you would like to select." + '\n' + "1 - Login" + '\n' + "2 - Sign up");
x = reader.nextInt();
}
return x;
}
public static player signUp() {
Scanner reader = new Scanner(System.in);
String firstName = "";
String lastName = "";
String login = "";
String password = "";
System.out.println("Enter your first name.");
firstName = reader.nextLine();
System.out.println("Enter your last name.");
lastName = reader.nextLine();
System.out.print("Create your login name.");
login = reader.nextLine();
System.out.println("Set your password.");
password = reader.nextLine();
return new player(firstName, lastName, login, password);
}
public static boolean login(ArrayList players) {
Scanner reader = new Scanner(System.in);
boolean lob = false;
int i = 0;
String login = "";
String password = "";
System.out.println("Enter your login.");
login = reader.nextLine();
System.out.println("Enter your password.");
password = reader.nextLine();
while((i < players.size()) || (lob == true)) {
if((((player) players.get(i)).getLogin()).equals(login) && (((player) players.get(i)).getPassword()).equals(password)) {
lob = true;
}
i++;
}
return lob;
}
public static String lobby() {
return "Welcome to the lobby.";
}
}

14 years ago

Beginning Java

Help with my game.

Thank you dude. Sorry I didn't do that before. That was my first post.

14 years ago

Beginning Java

Help with my game.

Hello. I'm creating a game where people can set up an account. Their registration information includes but is not limited to a login and a password. The login and the password are used to sign in. I store the sign in information in a player object, and each player object is stored in an Array List called players. How do I prevent the player objects from being deleted when I compile the program. Am I doing this the right way? Should I be storing the players sign in information in a file? If so, I'm not sure how to do this. Please help. Thank you. My code:

public class player {
private String firstName;
private String lastName;
private String login;
private String password;
private double balance;
public player(String f, String l, String log, String p, double b) {
firstName = f;
lastName = l;
login = log;
password = p;
balance = b;
}
public player(String f, String l, String log, String p) {
firstName = f;
lastName = l;
login = log;
password = p;
balance = 100;
}
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
public String getLogin() {
return login;
}
public String getPassword() {
return password;
}
public double getBalance() {
return balance;
}
}
import java.util.Scanner;
import java.util.ArrayList;
public class diceGambling {
public static void main(String[] args) {
Scanner reader = new Scanner(System.in);
ArrayList players = new ArrayList();
boolean lobby = false;
int choice = 0;
while(lobby == false) {
choice = startUp();
if(choice == 1)
{
for(int i = 0; i < 3; i++) {
if(login(players) == false)
System.out.println("Incorrect login. Try again.");
else lobby = true;
}
}
else if(choice == 2) {
players.add(signUp());
lobby = true;
}
}
System.out.println(lobby());
}
public static int startUp() {
Scanner reader = new Scanner(System.in);
int x = 0;
while ((x != 1) && (x != 2)) {
System.out.println(
"Press the corresponding number for the option you would like to select." +
'\n' + "1 - Login" + '\n' + "2 - Sign up");
x = reader.nextInt();
}
return x;
}
public static player signUp() {
Scanner reader = new Scanner(System.in);
String firstName = "";
String lastName = "";
String login = "";
String password = "";
System.out.println("Enter your first name.");
firstName = reader.nextLine();
System.out.println("Enter your last name.");
lastName = reader.nextLine();
System.out.print("Create your login name.");
login = reader.nextLine();
System.out.println("Set your password.");
password = reader.nextLine();
return new player(firstName, lastName, login, password);
}
public static boolean login(ArrayList players) {
Scanner reader = new Scanner(System.in);
boolean lob = false;
int i = 0;
String login = "";
String password = "";
System.out.println("Enter your login.");
login = reader.nextLine();
System.out.println("Enter your password.");
password = reader.nextLine();
while((i < players.size()) || (lob == true)) {
if((((player) players.get(i)).getLogin()).equals(login) &&
(((player) players.get(i)).getPassword()).equals(password)) {
lob = true;
}
i++;
}
return lob;
}
public static String lobby() {
return "Welcome to the lobby.";
}
}

[edit]Newlines because lines too long. CR[/edit]

14 years ago

Beginning Java

Help with creating a game.

Hello. I'm creating a game where people can set up an account. Their registration information includes but is not limited to a login and a password. The login and the password are used to sign in. I store the sign in information in a player object, and each player object is stored in an Array List called players. How do I prevent the player objects from being deleted when I compile the program. Am I doing this the right way? Should I be storing the players sign in information in a file? If so, I'm not sure how to do this. Please help. Thank you. My code:

public class player {
private String firstName;
private String lastName;
private String login;
private String password;
private double balance;
public player(String f, String l, String log, String p, double b) {
firstName = f;
lastName = l;
login = log;
password = p;
balance = b;
}
public player(String f, String l, String log, String p) {
firstName = f;
lastName = l;
login = log;
password = p;
balance = 100;
}
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
public String getLogin() {
return login;
}
public String getPassword() {
return password;
}
public double getBalance() {
return balance;
}
}
import java.util.Scanner;
import java.util.ArrayList;
public class diceGambling {
public static void main(String[] args) {
Scanner reader = new Scanner(System.in);
ArrayList players = new ArrayList();
boolean lobby = false;
int choice = 0;
while(lobby == false) {
choice = startUp();
if(choice == 1)
{
for(int i = 0; i < 3; i++) {
if(login(players) == false)
System.out.println("Incorrect login. Try again.");
else lobby = true;
}
}
else if(choice == 2) {
players.add(signUp());
lobby = true;
}
}
System.out.println(lobby());
}
public static int startUp() {
Scanner reader = new Scanner(System.in);
int x = 0;
while ((x != 1) && (x != 2)) {
System.out.println("Press the corresponding number for the option you would like to select." + '\n' + "1 - Login" + '\n' + "2 - Sign up");
x = reader.nextInt();
}
return x;
}
public static player signUp() {
Scanner reader = new Scanner(System.in);
String firstName = "";
String lastName = "";
String login = "";
String password = "";
System.out.println("Enter your first name.");
firstName = reader.nextLine();
System.out.println("Enter your last name.");
lastName = reader.nextLine();
System.out.print("Create your login name.");
login = reader.nextLine();
System.out.println("Set your password.");
password = reader.nextLine();
return new player(firstName, lastName, login, password);
}
public static boolean login(ArrayList players) {
Scanner reader = new Scanner(System.in);
boolean lob = false;
int i = 0;
String login = "";
String password = "";
System.out.println("Enter your login.");
login = reader.nextLine();
System.out.println("Enter your password.");
password = reader.nextLine();
while((i < players.size()) || (lob == true)) {
if((((player) players.get(i)).getLogin()).equals(login) && (((player) players.get(i)).getPassword()).equals(password)) {
lob = true;
}
i++;
}
return lob;
}
public static String lobby() {
return "Welcome to the lobby.";
}
}

14 years ago

Java in General

John Michaels

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