Before I go too far trying Scene Builder

src/main/java/rocks/zipcode/atm/ActionResult.java

@@ -20,9 +20,7 @@ public class ActionResult<T> {
         return data;
     }
 
-    public String getErrorMessage() {
-        return errorMessage;
-    }
+    public String getErrorMessage() { return errorMessage; }
 
     public boolean isSuccess() {
         return data != null;

src/main/java/rocks/zipcode/atm/CashMachine.java

@@ -47,7 +47,7 @@ public class CashMachine {
         }
     }
 
-    public void exit() {
+    public void logOut() {
         if (accountData != null) {
             accountData = null;
         }
@@ -58,7 +58,7 @@ public class CashMachine {
         return accountData != null ? accountData.toString() : "Try account 1000 or 2000 and click submit.";
     }
 
-    private <T> void tryCall(Supplier<ActionResult<T> > action, Consumer<T> postAction) {
+    public <T> void tryCall(Supplier<ActionResult<T> > action, Consumer<T> postAction) {
         try {
             ActionResult<T> result = action.get();
             if (result.isSuccess()) {

src/main/java/rocks/zipcode/atm/CashMachineApp.java

@@ -49,9 +49,9 @@ public class CashMachineApp extends Application {
             areaInfo.setText(cashMachine.toString());
         });
 
-        Button btnExit = new Button("Exit");
+        Button btnExit = new Button("Log Out");
         btnExit.setOnAction(e -> {
-            cashMachine.exit();
+            cashMachine.logOut();
 
             areaInfo.setText(cashMachine.toString());
         });

src/main/java/rocks/zipcode/atm/CashMachineSkin.fxml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import java.lang.*?>
+<?import java.util.*?>
+<?import javafx.scene.*?>
+<?import javafx.scene.control.*?>
+<?import javafx.scene.layout.*?>
+
+<AnchorPane xmlns="http://javafx.com/javafx"
+            xmlns:fx="http://javafx.com/fxml"
+            fx:controller="$CONTROLLER_NAME$"
+            prefHeight="400.0" prefWidth="600.0">
+
+</AnchorPane>