started with the TicTacToe_MinMax Project. Finished the rendering of the game.

TODO: Make a playable version and add MinMax

ATM-Machine/ATM-Machine.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

ATM-Machine/src/Accounts.java

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+import java.io.File;
+import java.util.ArrayList;
+import java.util.Arrays;
+
+public class Accounts {
+
+    private String path;
+    private File file;
+    private ArrayList<File> files;
+
+    public Accounts() {
+        String path = System.getProperty("user.home")+"/.accounts";
+        File file = new File(path);
+        //Creates filesystem if not present
+        file.mkdir();
+
+        //Reads all files from the folder
+        files = new ArrayList<>(Arrays.asList(file.listFiles()));
+    }
+
+    public boolean isValidAcc(String name, String code){
+         return true;
+    }
+
+    public static void main(String[] args) {
+        Accounts acc = new Accounts();
+    }
+}

ATM-Machine/src/META-INF/MANIFEST.MF

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+Manifest-Version: 1.0
+Main-Class: Operator
+

ATM-Machine/src/NumberPicker.java

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+package src;
+
+public class NumberPicker {
+}

ATM-Machine/src/Operator.java

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+import java.util.Scanner;
+
+public class Operator {
+
+    private int balance;
+    private int options;
+    private int pin;
+    private boolean isActive;
+
+    public Operator() {
+        balance = 100;
+        options = -1;
+        pin = 1234;
+        isActive = true;
+    }
+
+    private void printMenu() {
+        System.out.println("Which action do you want to take?");
+        System.out.println("    1. Check balance");
+        System.out.println("    2. Add money to account");
+        System.out.println("    3. Withdraw money from account");
+        System.out.println("    4. Change Pin");
+        System.out.println("    5. Cancel action");
+    }
+
+    public void manage() {
+        System.out.println("Welcome to the ATM");
+        while (isActive) {
+            printMenu();
+            Scanner numScanner = new Scanner(System.in);
+            int option = numScanner.nextInt();
+            switch (option) {
+                case 1:
+                    System.out.println();
+                    System.out.printf("Your account balance is %d€\n", balance);
+                    System.out.println();
+                    break;
+
+                case 2:
+                    System.out.println();
+                    System.out.println("How much money do you want to add to your account?");
+                    Scanner addScanner = new Scanner(System.in);
+                    int amountAdded = addScanner.nextInt();
+                    balance += amountAdded;
+                    System.out.println();
+                    System.out.printf("%d€ added to your account\n", amountAdded);
+                    System.out.printf("New balance: %d€\n", balance);
+                    System.out.println();
+                    break;
+
+                case 3:
+                    System.out.println();
+                    int tries = 3;
+                    while (tries > 0) {
+                        System.out.println("Please enter your pin");
+                        Scanner pinScanner = new Scanner(System.in);
+                        if (pinScanner.nextInt() == pin) {
+                            while (true) {
+                                System.out.println("Which amount do you want to withdraw from your account?");
+                                Scanner amountScanner = new Scanner(System.in);
+                                int amount = amountScanner.nextInt();
+                                if (amount < balance) {
+                                    System.out.printf("%d€ got withdrawn from your Account\n", amount);
+                                    balance -= amount;
+                                    System.out.printf("New balance: %d", balance);
+                                    System.out.println();
+                                    break;
+                                } else {
+                                    System.out.printf("You can only withdraw %d€\n", balance);
+                                    System.out.println();
+                                }
+                            }
+                            break;
+                        } else {
+                            tries -= 1;
+                            System.err.println("The entered pin is incorrect");
+                            System.out.printf("%d tries left\n", tries);
+                        }
+                    }
+                    if (tries <= 0) {
+                        System.err.println("Action canceled");
+                        isActive = false;
+                    }
+                    break;
+
+                case 4:
+                    System.out.println();
+                    System.out.println("Enter your pin");
+                    Scanner pinScanner = new Scanner(System.in);
+                    int oldPin = pinScanner.nextInt();
+                    boolean pinNotValid = true;
+                    while (pinNotValid) {
+                        if (oldPin == pin) {
+                            System.out.println("Enter a new 4-digit pin");
+                            int newPin = pinScanner.nextInt();
+                            if ((newPin + "").length() == 4) {
+                                pin = newPin;
+                                pinNotValid = false;
+                            } else {
+                                System.out.println("You have to enter a 4-digit pin");
+                            }
+                        } else {
+                            System.err.println("Wrong pin entered");
+                        }
+                    }
+                    System.out.println();
+                    break;
+
+                case 5:
+                    System.out.println();
+                    System.err.println("Action canceled");
+                    isActive = false;
+            }
+        }
+    }
+
+    public static void main(String[] args) {
+        Operator operator = new Operator();
+        operator.manage();
+    }
+
+}