Aula Ricardo

2025-11-26 23:15:53 -03:00
commit 9d78ac4cc6
24 changed files with 1915 additions and 0 deletions
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
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--- a/README.md
+++ b/README.md
@@ -0,0 +1,690 @@
+# Jogo **Blackjack (21)**
+
+Vamos construir um **Blackjack (21)** profissional, com arquitetura MVC (Model-View-Controller).
+
+---
+
+### 🏗️ 1. Preparação do Ambiente e Estrutura
+
+Você precisará do **JDK 21** instalado e de uma IDE (IntelliJ IDEA ou Eclipse). Vamos usar o **Maven** para gerenciar as dependências.
+
+**Estrutura de Pastas Recomendada:**
+
+```text
+blackjack21/
+├── src/
+│   ├── main/
+│   │   ├── java/
+│   │   │   └── com/
+│   │   │       └── blackjack/
+│   │   │           ├── Main.java          (Entrada)
+│   │   │           ├── model/             (Lógica: Carta, Baralho, Mão)
+│   │   │           └── controller/        (Interface e Regras de Jogo)
+│   │   └── resources/
+│   │       └── styles.css                 (Estilo Moderno)
+└── pom.xml
+```
+
+**Dependências no `pom.xml`:**
+Precisamos das bibliotecas do JavaFX.
+
+```xml
+<dependencies>
+    <dependency>
+        <groupId>org.openjfx</groupId>
+        <artifactId>javafx-controls</artifactId>
+        <version>21</version>
+    </dependency>
+    <dependency>
+        <groupId>org.openjfx</groupId>
+        <artifactId>javafx-fxml</artifactId>
+        <version>21</version>
+    </dependency>
+</dependencies>
+```
+
+---
+
+### 🚀 2. Configuração e Execução no Windows
+
+#### Pré-requisitos
+
+- **JDK 21** instalado
+- **Maven** instalado globalmente (ou use o Maven Wrapper incluído)
+
+#### Problema Comum: Maven Wrapper
+
+Se você encontrar o erro:
+
+```
+Get-Content : Cannot find path '.mvn\wrapper\maven-wrapper.properties' because it does not exist.
+```
+
+**Solução:**
+
+1. Abra o PowerShell no diretório do projeto
+2. Execute o comando para regenerar o Maven Wrapper:
+   ```powershell
+   mvn -N wrapper:wrapper
+   ```
+
+#### Como Executar o Projeto
+
+```powershell
+# Navegar para o diretório do projeto
+cd "caminho\para\jogo_blackjack_21_fx"
+
+# Executar a aplicação JavaFX
+.\mvnw javafx:run
+
+# Ou limpar e executar
+.\mvnw clean javafx:run
+```
+
+#### Outros Comandos Úteis
+
+```powershell
+# Apenas compilar
+.\mvnw compile
+
+# Limpar arquivos compilados
+.\mvnw clean
+
+# Executar testes (se houver)
+.\mvnw test
+```
+
+---
+
+### 🃏 4. O Modelo (Model)
+
+Aqui ficam as regras de negócio, independentes da interface visual.
+
+**Classe `Carta.java` e Enums:**
+
+```java
+package com.blackjack.model;
+
+public record Carta(Nipe nipe, Rank rank) {
+    public enum Nipe { COPAS, OUROS, PAUS, ESPADAS }
+    public enum Rank {
+        DOIS(2), TRES(3), QUATRO(4), CINCO(5), SEIS(6), SETE(7), OITO(8), NOVE(9), DEZ(10),
+        VALETE(10), DAMA(10), REI(10), AS(11);
+
+        final int valor;
+        Rank(int valor) { this.valor = valor; }
+    }
+
+    @Override
+    public String toString() {
+        return rank + " de " + nipe;
+    }
+}
+```
+
+**Classe `Baralho.java`:**
+
+```java
+package com.blackjack.model;
+
+import java.util.*;
+
+public class Baralho {
+    private final Stack<Carta> cartas = new Stack<>();
+
+    public Baralho() {
+        reiniciar();
+    }
+
+    public void reiniciar() {
+        cartas.clear();
+        for (Carta.Nipe nipe : Carta.Nipe.values()) {
+            for (Carta.Rank rank : Carta.Rank.values()) {
+                cartas.push(new Carta(nipe, rank));
+            }
+        }
+        Collections.shuffle(cartas);
+    }
+
+    public Carta comprar() {
+        return cartas.isEmpty() ? null : cartas.pop();
+    }
+}
+```
+
+---
+
+### 🧠 5. Lógica de Pontuação (Regra do Ás)
+
+O Ás é "tricky". Ele vale 11, a menos que estoure 21, aí passa a valer 1.
+
+**Classe `Mao.java`:**
+
+```java
+package com.blackjack.model;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Mao {
+    private final List<Carta> cartas = new ArrayList<>();
+
+    public void adicionarCarta(Carta carta) {
+        cartas.add(carta);
+    }
+
+    public void limpar() {
+        cartas.clear();
+    }
+
+    public List<Carta> getCartas() {
+        return cartas;
+    }
+
+    public int calcularPontuacao() {
+        int pontos = 0;
+        int ases = 0;
+
+        for (Carta c : cartas) {
+            pontos += c.rank().valor;
+            if (c.rank() == Carta.Rank.AS) ases++;
+        }
+
+        while (pontos > 21 && ases > 0) {
+            pontos -= 10; // Transforma Ás de 11 para 1
+            ases--;
+        }
+        return pontos;
+    }
+}
+```
+
+---
+
+### 🎨 6. Interface Moderna e Controle (View & Controller)
+
+Em vez de usar HTML/DOM (que é Web), usaremos o **Scenegraph** do JavaFX. Para ser didático, farei a interface via código para você ver a estrutura, mas em projetos grandes usamos arquivos FXML.
+
+**Classe `BlackjackGame.java` (O Coração da UI):**
+
+```java
+package com.blackjack.controller;
+
+import com.blackjack.model.*;
+import javafx.application.Application;
+import javafx.geometry.Pos;
+import javafx.scene.Scene;
+import javafx.scene.control.*;
+import javafx.scene.layout.*;
+import javafx.stage.Stage;
+
+public class BlackjackGame extends Application {
+
+    private Baralho baralho;
+    private Mao maoJogador;
+    private Mao maoDealer;
+
+    private HBox mesaDealer;
+    private HBox mesaJogador;
+    private Label lblStatus;
+    private Label lblPontosJogador;
+
+    private Button btnPedir;
+    private Button btnParar;
+    private Button btnReiniciar;
+
+    @Override
+    public void start(Stage stage) {
+        baralho = new Baralho();
+        maoJogador = new Mao();
+        maoDealer = new Mao();
+
+        // --- Layout da Interface (Responsiva) ---
+        VBox root = new VBox(20);
+        root.setAlignment(Pos.CENTER);
+        root.setStyle("-fx-background-color: #2E8B57; -fx-padding: 30;"); // Verde Mesa de Jogo
+
+        // Área do Dealer
+        Label lblDealer = new Label("Dealer");
+        lblDealer.getStyleClass().add("titulo");
+        mesaDealer = new HBox(10);
+        mesaDealer.setAlignment(Pos.CENTER);
+
+        // Área do Jogador
+        Label lblJogador = new Label("Você");
+        lblJogador.getStyleClass().add("titulo");
+        mesaJogador = new HBox(10);
+        mesaJogador.setAlignment(Pos.CENTER);
+        lblPontosJogador = new Label("Pontos: 0");
+        lblPontosJogador.getStyleClass().add("texto-branco");
+
+        // Botões
+        HBox painelBotoes = new HBox(15);
+        painelBotoes.setAlignment(Pos.CENTER);
+        btnPedir = criarBotao("Pedir Carta", "#3498db");
+        btnParar = criarBotao("Parar", "#e74c3c");
+        btnReiniciar = criarBotao("Novo Jogo", "#f1c40f");
+        btnReiniciar.setVisible(false); // Só aparece no fim
+
+        painelBotoes.getChildren().addAll(btnPedir, btnParar, btnReiniciar);
+
+        lblStatus = new Label("Bem-vindo ao Blackjack!");
+        lblStatus.getStyleClass().add("status");
+
+        root.getChildren().addAll(lblDealer, mesaDealer, lblStatus, mesaJogador, lblJogador, lblPontosJogador, painelBotoes);
+
+        // --- Eventos (Interatividade) ---
+        btnPedir.setOnAction(e -> comprarCartaJogador());
+        btnParar.setOnAction(e -> turnoDealer());
+        btnReiniciar.setOnAction(e -> iniciarJogo());
+
+        Scene scene = new Scene(root, 800, 600);
+        scene.getStylesheets().add(getClass().getResource("/styles.css").toExternalForm());
+
+        stage.setTitle("Blackjack Java 21");
+        stage.setScene(scene);
+        stage.show();
+
+        iniciarJogo();
+    }
+
+    private void iniciarJogo() {
+        baralho.reiniciar();
+        maoJogador.limpar();
+        maoDealer.limpar();
+
+        btnPedir.setDisable(false);
+        btnParar.setDisable(false);
+        btnReiniciar.setVisible(false);
+        lblStatus.setText("Sua vez...");
+
+        // Distribuição inicial
+        maoJogador.adicionarCarta(baralho.comprar());
+        maoDealer.adicionarCarta(baralho.comprar());
+        maoJogador.adicionarCarta(baralho.comprar());
+        maoDealer.adicionarCarta(baralho.comprar());
+
+        atualizarMesa(false);
+    }
+
+    private void comprarCartaJogador() {
+        maoJogador.adicionarCarta(baralho.comprar());
+        if (maoJogador.calcularPontuacao() > 21) {
+            atualizarMesa(false);
+            fimDeJogo("Você estourou! Dealer venceu.");
+        } else {
+            atualizarMesa(false);
+        }
+    }
+
+    private void turnoDealer() {
+        // Dealer compra até ter 17 ou mais
+        while (maoDealer.calcularPontuacao() < 17) {
+            maoDealer.adicionarCarta(baralho.comprar());
+        }
+        verificarVencedor();
+    }
+
+    private void verificarVencedor() {
+        int pJogador = maoJogador.calcularPontuacao();
+        int pDealer = maoDealer.calcularPontuacao();
+
+        atualizarMesa(true); // Revela cartas do dealer
+
+        if (pDealer > 21) {
+            fimDeJogo("Dealer estourou! Você venceu!");
+        } else if (pJogador > pDealer) {
+            fimDeJogo("Você venceu!");
+        } else if (pJogador < pDealer) {
+            fimDeJogo("Dealer venceu.");
+        } else {
+            fimDeJogo("Empate.");
+        }
+    }
+
+    private void fimDeJogo(String mensagem) {
+        lblStatus.setText(mensagem);
+        btnPedir.setDisable(true);
+        btnParar.setDisable(true);
+        btnReiniciar.setVisible(true);
+    }
+
+    // Atualiza a "DOM" do JavaFX
+    private void atualizarMesa(boolean mostrarTudoDealer) {
+        mesaJogador.getChildren().clear();
+        mesaDealer.getChildren().clear();
+
+        // Renderiza Jogador
+        for (Carta c : maoJogador.getCartas()) {
+            mesaJogador.getChildren().add(criarVisualCarta(c));
+        }
+        lblPontosJogador.setText("Pontos: " + maoJogador.calcularPontuacao());
+
+        // Renderiza Dealer
+        List<Carta> cartasDealer = maoDealer.getCartas();
+        for (int i = 0; i < cartasDealer.size(); i++) {
+            if (i == 0 && !mostrarTudoDealer) {
+                // Carta oculta
+                mesaDealer.getChildren().add(criarVisualCartaOculta());
+            } else {
+                mesaDealer.getChildren().add(criarVisualCarta(cartasDealer.get(i)));
+            }
+        }
+    }
+
+    // Helpers de UI
+    private StackPane criarVisualCarta(Carta c) {
+        StackPane card = new StackPane();
+        card.setPrefSize(80, 120);
+        card.getStyleClass().add("carta");
+        Label lbl = new Label(c.toString());
+        lbl.setWrapText(true);
+        card.getChildren().add(lbl);
+        return card;
+    }
+
+    private StackPane criarVisualCartaOculta() {
+        StackPane card = new StackPane();
+        card.setPrefSize(80, 120);
+        card.getStyleClass().add("carta-oculta");
+        return card;
+    }
+
+    private Button criarBotao(String texto, String cor) {
+        Button btn = new Button(texto);
+        btn.setStyle("-fx-background-color: " + cor + "; -fx-text-fill: white; -fx-font-weight: bold; -fx-font-size: 14px;");
+        btn.setPrefWidth(120);
+        return btn;
+    }
+
+    public static void main(String[] args) {
+        launch();
+    }
+}
+```
+
+---
+
+### 💅 5. Estilização CSS (Moderno e Responsivo)
+
+Salve como `src/main/resources/styles.css`. Isso substitui a necessidade de HTML.
+
+```css
+.root {
+  -fx-font-family: "Segoe UI", sans-serif;
+}
+
+.titulo {
+  -fx-font-size: 24px;
+  -fx-text-fill: white;
+  -fx-font-weight: bold;
+  -fx-effect: dropshadow(three-pass-box, rgba(0, 0, 0, 0.6), 5, 0, 0, 1);
+}
+
+.texto-branco {
+  -fx-text-fill: white;
+  -fx-font-size: 18px;
+}
+
+.status {
+  -fx-font-size: 28px;
+  -fx-text-fill: #f1c40f;
+  -fx-font-weight: bold;
+  -fx-effect: dropshadow(three-pass-box, rgba(0, 0, 0, 0.8), 10, 0, 0, 0);
+}
+
+.carta {
+  -fx-background-color: white;
+  -fx-background-radius: 10;
+  -fx-border-color: #333;
+  -fx-border-radius: 10;
+  -fx-border-width: 2;
+  -fx-effect: dropshadow(three-pass-box, rgba(0, 0, 0, 0.4), 10, 0, 5, 5);
+}
+
+.carta-oculta {
+  -fx-background-color: #a93226; /* Vermelho fundo carta */
+  -fx-background-radius: 10;
+  -fx-border-color: white;
+  -fx-border-width: 3;
+  -fx-border-style: dashed;
+}
+```
+
+---
+
+### 🚀 8. Gerar Versão Desktop (Java FX)
+
+No Java moderno, não usamos Electron. Usamos **jpackage** (incluso no JDK 21) para criar um `.exe` ou `.msi` nativo.
+
+1.  **Compile o projeto** (via Maven):
+    `mvn clean package`
+2.  **Gere a imagem nativa** (Exemplo de comando simplificado):
+    ```bash
+    jpackage --input target/ --name Blackjack21 --main-jar blackjack-1.0.jar --main-class com.blackjack.controller.BlackjackGame --type app-image
+    ```
+
+Isso criará um executável que o usuário pode clicar e jogar sem precisar instalar o Java manualmente.
+
+---
+
+### Próximo Passo
+
+### 🚀 9. Refatoração
+
+Esse erro é um clássico no desenvolvimento moderno com JavaFX (pós-JDK 11).
+
+O motivo: Desde o Java 11, o JavaFX foi removido do JDK padrão e agora vive como módulos separados. Quando você tenta rodar diretamente uma classe que estende `Application` (como a nossa `BlackjackApp`), a JVM tenta carregar os componentes gráficos nativos antes mesmo de olhar para o seu classpath, e falha.
+
+Vou te ensinar o **padrão da indústria** para resolver isso sem precisar ficar configurando argumentos complexos de VM (`--module-path`, etc). Usaremos a técnica do **Launcher (Lançador)**.
+
+Siga estes passos simples:
+
+### ✅ A Solução: O "Truque" do Launcher
+
+Precisamos criar uma classe simples que **não** estenda `Application`, apenas para chamar o `main` da classe principal. Isso engana a JVM e permite que as bibliotecas sejam carregadas corretamente do classpath.
+
+#### 1\. Crie a classe `Launcher.java`
+
+Crie este arquivo na mesma pasta do seu `BlackjackApp.java` (`src/main/java/com/blackjack/Launcher.java`):
+
+```java
+package com.blackjack;
+
+public class Launcher {
+    public static void main(String[] args) {
+        BlackjackApp.main(args);
+    }
+}
+```
+
+#### 2\. Execute pelo Launcher
+
+Agora, em vez de tentar rodar o `BlackjackApp.java`, **execute o `Launcher.java`**.
+
+- **Se estiver no VS Code/IntelliJ:** Clique com o botão direito em `Launcher.java` e selecione "Run".
+- **Se estiver via Linha de Comando:** Aponte para essa classe.
+
+---
+
+### 💡 Alternativa: Rodando via Maven (Recomendado)
+
+Se você já configurou o `pom.xml` que te passei anteriormente, você nem precisa criar o Launcher se rodar direto pelo Maven. O plugin do JavaFX cuida disso para você.
+
+Abra o terminal na pasta do projeto (onde está o `pom.xml`) e digite:
+
+```bash
+mvn clean javafx:run
+```
+
+Isso deve abrir a janela do jogo imediatamente.
+
+### Resumo Técnico (Para seu aprendizado)
+
+O erro acontece porque a classe `BlackjackApp` herda de `javafx.application.Application`. A JVM verifica isso na inicialização e exige que os módulos JavaFX estejam no _Module Path_. Ao usar a classe `Launcher` (que é uma classe Java comum), a aplicação inicia normalmente e, quando chama `BlackjackApp.main()`, as bibliotecas já estão carregadas no _Class Path_, contornando a verificação estrita da inicialização.
+
+---
+
+# Códigos Completos
+
+**Dependências no `pom.xml`:**
+Precisamos das bibliotecas do JavaFX.
+
+```xml
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>com.blackjack</groupId>
+    <artifactId>blackjack-desktop</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>21</maven.compiler.source>
+        <maven.compiler.target>21</maven.compiler.target>
+        <javafx.version>21</javafx.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.openjfx</groupId>
+            <artifactId>javafx-controls</artifactId>
+            <version>${javafx.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.openjfx</groupId>
+            <artifactId>javafx-fxml</artifactId>
+            <version>${javafx.version}</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.11.0</version>
+            </plugin>
+            <plugin>
+                <groupId>org.openjfx</groupId>
+                <artifactId>javafx-maven-plugin</artifactId>
+                <version>0.0.8</version>
+                <configuration>
+                    <mainClass>com.blackjack.BlackjackApp</mainClass>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+</project>
+```
+
+---
+
+### 💅 5. Estilização CSS (Moderno e Responsivo)
+
+Salve como `src/main/resources/styles.css`. Isso substitui a necessidade de HTML.
+
+```css
+.root {
+  -fx-background-color: #0a5c0a; /* Verde clássico */
+  -fx-font-family: "Arial";
+}
+
+/* Títulos */
+.titulo-principal {
+  -fx-text-fill: white;
+  -fx-font-size: 32px;
+  -fx-font-weight: bold;
+  -fx-padding: 20;
+  -fx-effect: dropshadow(three-pass-box, rgba(0, 0, 0, 0.5), 5, 0, 0, 1);
+}
+
+.titulo-area {
+  -fx-text-fill: #ffc107; /* Dourado */
+  -fx-font-size: 18px;
+  -fx-font-weight: bold;
+}
+
+/* Container das Mãos (Areas) */
+.area-jogo {
+  -fx-background-color: rgba(0, 0, 0, 0.2);
+  -fx-border-color: #ffc107;
+  -fx-border-width: 2;
+  -fx-border-radius: 10;
+  -fx-background-radius: 10;
+  -fx-padding: 20;
+  -fx-spacing: 15;
+  -fx-alignment: center;
+  -fx-min-width: 600;
+}
+
+/* A Carta Visual */
+.carta {
+  -fx-background-color: white;
+  -fx-background-radius: 8;
+  -fx-border-color: #333;
+  -fx-border-radius: 8;
+  -fx-border-width: 1;
+  -fx-pref-width: 80;
+  -fx-pref-height: 120;
+  -fx-effect: dropshadow(three-pass-box, rgba(0, 0, 0, 0.4), 8, 0, 2, 2);
+}
+
+.carta-texto {
+  -fx-font-size: 18px;
+  -fx-font-weight: bold;
+}
+
+.carta-naipe-grande {
+  -fx-font-size: 36px;
+}
+
+.red {
+  -fx-text-fill: #d90000;
+}
+.black {
+  -fx-text-fill: black;
+}
+
+/* Carta Oculta (Verso) */
+.carta-oculta {
+  -fx-background-color: linear-gradient(to bottom right, #444, #666);
+  -fx-background-radius: 8;
+  -fx-border-color: white;
+  -fx-border-width: 2;
+  -fx-border-style: solid;
+}
+
+/* Mensagem de Status */
+.status-msg {
+  -fx-text-fill: white;
+  -fx-font-size: 24px;
+  -fx-font-weight: bold;
+  -fx-padding: 10;
+}
+
+/* Botões */
+.button {
+  -fx-background-color: #ffc107;
+  -fx-text-fill: #333;
+  -fx-font-size: 14px;
+  -fx-font-weight: bold;
+  -fx-background-radius: 5;
+  -fx-cursor: hand;
+  -fx-padding: 10 20;
+}
+
+.button:hover {
+  -fx-background-color: #ffd54f;
+}
+
+.button:disabled {
+  -fx-background-color: #999;
+  -fx-opacity: 0.7;
+}
+```
+
+---
+
+### [ricardotecpro.github.io](https://ricardotecpro.github.io/)
--- a/295
+++ b/295
@@ -0,0 +1,295 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Apache Maven Wrapper startup batch script, version 3.3.4
+#
+# Optional ENV vars
+# -----------------
+#   JAVA_HOME - location of a JDK home dir, required when download maven via java source
+#   MVNW_REPOURL - repo url base for downloading maven distribution
+#   MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+#   MVNW_VERBOSE - true: enable verbose log; debug: trace the mvnw script; others: silence the output
+# ----------------------------------------------------------------------------
+
+set -euf
+[ "${MVNW_VERBOSE-}" != debug ] || set -x
+
+# OS specific support.
+native_path() { printf %s\\n "$1"; }
+case "$(uname)" in
+CYGWIN* | MINGW*)
+  [ -z "${JAVA_HOME-}" ] || JAVA_HOME="$(cygpath --unix "$JAVA_HOME")"
+  native_path() { cygpath --path --windows "$1"; }
+  ;;
+esac
+
+# set JAVACMD and JAVACCMD
+set_java_home() {
+  # For Cygwin and MinGW, ensure paths are in Unix format before anything is touched
+  if [ -n "${JAVA_HOME-}" ]; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ]; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+      JAVACCMD="$JAVA_HOME/jre/sh/javac"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+      JAVACCMD="$JAVA_HOME/bin/javac"
+
+      if [ ! -x "$JAVACMD" ] || [ ! -x "$JAVACCMD" ]; then
+        echo "The JAVA_HOME environment variable is not defined correctly, so mvnw cannot run." >&2
+        echo "JAVA_HOME is set to \"$JAVA_HOME\", but \"\$JAVA_HOME/bin/java\" or \"\$JAVA_HOME/bin/javac\" does not exist." >&2
+        return 1
+      fi
+    fi
+  else
+    JAVACMD="$(
+      'set' +e
+      'unset' -f command 2>/dev/null
+      'command' -v java
+    )" || :
+    JAVACCMD="$(
+      'set' +e
+      'unset' -f command 2>/dev/null
+      'command' -v javac
+    )" || :
+
+    if [ ! -x "${JAVACMD-}" ] || [ ! -x "${JAVACCMD-}" ]; then
+      echo "The java/javac command does not exist in PATH nor is JAVA_HOME set, so mvnw cannot run." >&2
+      return 1
+    fi
+  fi
+}
+
+# hash string like Java String::hashCode
+hash_string() {
+  str="${1:-}" h=0
+  while [ -n "$str" ]; do
+    char="${str%"${str#?}"}"
+    h=$(((h * 31 + $(LC_CTYPE=C printf %d "'$char")) % 4294967296))
+    str="${str#?}"
+  done
+  printf %x\\n $h
+}
+
+verbose() { :; }
+[ "${MVNW_VERBOSE-}" != true ] || verbose() { printf %s\\n "${1-}"; }
+
+die() {
+  printf %s\\n "$1" >&2
+  exit 1
+}
+
+trim() {
+  # MWRAPPER-139:
+  #   Trims trailing and leading whitespace, carriage returns, tabs, and linefeeds.
+  #   Needed for removing poorly interpreted newline sequences when running in more
+  #   exotic environments such as mingw bash on Windows.
+  printf "%s" "${1}" | tr -d '[:space:]'
+}
+
+scriptDir="$(dirname "$0")"
+scriptName="$(basename "$0")"
+
+# parse distributionUrl and optional distributionSha256Sum, requires .mvn/wrapper/maven-wrapper.properties
+while IFS="=" read -r key value; do
+  case "${key-}" in
+  distributionUrl) distributionUrl=$(trim "${value-}") ;;
+  distributionSha256Sum) distributionSha256Sum=$(trim "${value-}") ;;
+  esac
+done <"$scriptDir/.mvn/wrapper/maven-wrapper.properties"
+[ -n "${distributionUrl-}" ] || die "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties"
+
+case "${distributionUrl##*/}" in
+maven-mvnd-*bin.*)
+  MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/
+  case "${PROCESSOR_ARCHITECTURE-}${PROCESSOR_ARCHITEW6432-}:$(uname -a)" in
+  *AMD64:CYGWIN* | *AMD64:MINGW*) distributionPlatform=windows-amd64 ;;
+  :Darwin*x86_64) distributionPlatform=darwin-amd64 ;;
+  :Darwin*arm64) distributionPlatform=darwin-aarch64 ;;
+  :Linux*x86_64*) distributionPlatform=linux-amd64 ;;
+  *)
+    echo "Cannot detect native platform for mvnd on $(uname)-$(uname -m), use pure java version" >&2
+    distributionPlatform=linux-amd64
+    ;;
+  esac
+  distributionUrl="${distributionUrl%-bin.*}-$distributionPlatform.zip"
+  ;;
+maven-mvnd-*) MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ ;;
+*) MVN_CMD="mvn${scriptName#mvnw}" _MVNW_REPO_PATTERN=/org/apache/maven/ ;;
+esac
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-<version>,maven-mvnd-<version>-<platform>}/<hash>
+[ -z "${MVNW_REPOURL-}" ] || distributionUrl="$MVNW_REPOURL$_MVNW_REPO_PATTERN${distributionUrl#*"$_MVNW_REPO_PATTERN"}"
+distributionUrlName="${distributionUrl##*/}"
+distributionUrlNameMain="${distributionUrlName%.*}"
+distributionUrlNameMain="${distributionUrlNameMain%-bin}"
+MAVEN_USER_HOME="${MAVEN_USER_HOME:-${HOME}/.m2}"
+MAVEN_HOME="${MAVEN_USER_HOME}/wrapper/dists/${distributionUrlNameMain-}/$(hash_string "$distributionUrl")"
+
+exec_maven() {
+  unset MVNW_VERBOSE MVNW_USERNAME MVNW_PASSWORD MVNW_REPOURL || :
+  exec "$MAVEN_HOME/bin/$MVN_CMD" "$@" || die "cannot exec $MAVEN_HOME/bin/$MVN_CMD"
+}
+
+if [ -d "$MAVEN_HOME" ]; then
+  verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+  exec_maven "$@"
+fi
+
+case "${distributionUrl-}" in
+*?-bin.zip | *?maven-mvnd-?*-?*.zip) ;;
+*) die "distributionUrl is not valid, must match *-bin.zip or maven-mvnd-*.zip, but found '${distributionUrl-}'" ;;
+esac
+
+# prepare tmp dir
+if TMP_DOWNLOAD_DIR="$(mktemp -d)" && [ -d "$TMP_DOWNLOAD_DIR" ]; then
+  clean() { rm -rf -- "$TMP_DOWNLOAD_DIR"; }
+  trap clean HUP INT TERM EXIT
+else
+  die "cannot create temp dir"
+fi
+
+mkdir -p -- "${MAVEN_HOME%/*}"
+
+# Download and Install Apache Maven
+verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+verbose "Downloading from: $distributionUrl"
+verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+# select .zip or .tar.gz
+if ! command -v unzip >/dev/null; then
+  distributionUrl="${distributionUrl%.zip}.tar.gz"
+  distributionUrlName="${distributionUrl##*/}"
+fi
+
+# verbose opt
+__MVNW_QUIET_WGET=--quiet __MVNW_QUIET_CURL=--silent __MVNW_QUIET_UNZIP=-q __MVNW_QUIET_TAR=''
+[ "${MVNW_VERBOSE-}" != true ] || __MVNW_QUIET_WGET='' __MVNW_QUIET_CURL='' __MVNW_QUIET_UNZIP='' __MVNW_QUIET_TAR=v
+
+# normalize http auth
+case "${MVNW_PASSWORD:+has-password}" in
+'') MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+has-password) [ -n "${MVNW_USERNAME-}" ] || MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+esac
+
+if [ -z "${MVNW_USERNAME-}" ] && command -v wget >/dev/null; then
+  verbose "Found wget ... using wget"
+  wget ${__MVNW_QUIET_WGET:+"$__MVNW_QUIET_WGET"} "$distributionUrl" -O "$TMP_DOWNLOAD_DIR/$distributionUrlName" || die "wget: Failed to fetch $distributionUrl"
+elif [ -z "${MVNW_USERNAME-}" ] && command -v curl >/dev/null; then
+  verbose "Found curl ... using curl"
+  curl ${__MVNW_QUIET_CURL:+"$__MVNW_QUIET_CURL"} -f -L -o "$TMP_DOWNLOAD_DIR/$distributionUrlName" "$distributionUrl" || die "curl: Failed to fetch $distributionUrl"
+elif set_java_home; then
+  verbose "Falling back to use Java to download"
+  javaSource="$TMP_DOWNLOAD_DIR/Downloader.java"
+  targetZip="$TMP_DOWNLOAD_DIR/$distributionUrlName"
+  cat >"$javaSource" <<-END
+	public class Downloader extends java.net.Authenticator
+	{
+	  protected java.net.PasswordAuthentication getPasswordAuthentication()
+	  {
+	    return new java.net.PasswordAuthentication( System.getenv( "MVNW_USERNAME" ), System.getenv( "MVNW_PASSWORD" ).toCharArray() );
+	  }
+	  public static void main( String[] args ) throws Exception
+	  {
+	    setDefault( new Downloader() );
+	    java.nio.file.Files.copy( java.net.URI.create( args[0] ).toURL().openStream(), java.nio.file.Paths.get( args[1] ).toAbsolutePath().normalize() );
+	  }
+	}
+	END
+  # For Cygwin/MinGW, switch paths to Windows format before running javac and java
+  verbose " - Compiling Downloader.java ..."
+  "$(native_path "$JAVACCMD")" "$(native_path "$javaSource")" || die "Failed to compile Downloader.java"
+  verbose " - Running Downloader.java ..."
+  "$(native_path "$JAVACMD")" -cp "$(native_path "$TMP_DOWNLOAD_DIR")" Downloader "$distributionUrl" "$(native_path "$targetZip")"
+fi
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+if [ -n "${distributionSha256Sum-}" ]; then
+  distributionSha256Result=false
+  if [ "$MVN_CMD" = mvnd.sh ]; then
+    echo "Checksum validation is not supported for maven-mvnd." >&2
+    echo "Please disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+    exit 1
+  elif command -v sha256sum >/dev/null; then
+    if echo "$distributionSha256Sum  $TMP_DOWNLOAD_DIR/$distributionUrlName" | sha256sum -c - >/dev/null 2>&1; then
+      distributionSha256Result=true
+    fi
+  elif command -v shasum >/dev/null; then
+    if echo "$distributionSha256Sum  $TMP_DOWNLOAD_DIR/$distributionUrlName" | shasum -a 256 -c >/dev/null 2>&1; then
+      distributionSha256Result=true
+    fi
+  else
+    echo "Checksum validation was requested but neither 'sha256sum' or 'shasum' are available." >&2
+    echo "Please install either command, or disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+    exit 1
+  fi
+  if [ $distributionSha256Result = false ]; then
+    echo "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised." >&2
+    echo "If you updated your Maven version, you need to update the specified distributionSha256Sum property." >&2
+    exit 1
+  fi
+fi
+
+# unzip and move
+if command -v unzip >/dev/null; then
+  unzip ${__MVNW_QUIET_UNZIP:+"$__MVNW_QUIET_UNZIP"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -d "$TMP_DOWNLOAD_DIR" || die "failed to unzip"
+else
+  tar xzf${__MVNW_QUIET_TAR:+"$__MVNW_QUIET_TAR"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -C "$TMP_DOWNLOAD_DIR" || die "failed to untar"
+fi
+
+# Find the actual extracted directory name (handles snapshots where filename != directory name)
+actualDistributionDir=""
+
+# First try the expected directory name (for regular distributions)
+if [ -d "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" ]; then
+  if [ -f "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain/bin/$MVN_CMD" ]; then
+    actualDistributionDir="$distributionUrlNameMain"
+  fi
+fi
+
+# If not found, search for any directory with the Maven executable (for snapshots)
+if [ -z "$actualDistributionDir" ]; then
+  # enable globbing to iterate over items
+  set +f
+  for dir in "$TMP_DOWNLOAD_DIR"/*; do
+    if [ -d "$dir" ]; then
+      if [ -f "$dir/bin/$MVN_CMD" ]; then
+        actualDistributionDir="$(basename "$dir")"
+        break
+      fi
+    fi
+  done
+  set -f
+fi
+
+if [ -z "$actualDistributionDir" ]; then
+  verbose "Contents of $TMP_DOWNLOAD_DIR:"
+  verbose "$(ls -la "$TMP_DOWNLOAD_DIR")"
+  die "Could not find Maven distribution directory in extracted archive"
+fi
+
+verbose "Found extracted Maven distribution directory: $actualDistributionDir"
+printf %s\\n "$distributionUrl" >"$TMP_DOWNLOAD_DIR/$actualDistributionDir/mvnw.url"
+mv -- "$TMP_DOWNLOAD_DIR/$actualDistributionDir" "$MAVEN_HOME" || [ -d "$MAVEN_HOME" ] || die "fail to move MAVEN_HOME"
+
+clean || :
+exec_maven "$@"
--- a/mvnw.cmd
+++ b/mvnw.cmd
@@ -0,0 +1,189 @@
+<# : batch portion
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    http://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Apache Maven Wrapper startup batch script, version 3.3.4
+@REM
+@REM Optional ENV vars
+@REM   MVNW_REPOURL - repo url base for downloading maven distribution
+@REM   MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+@REM   MVNW_VERBOSE - true: enable verbose log; others: silence the output
+@REM ----------------------------------------------------------------------------
+
+@IF "%__MVNW_ARG0_NAME__%"=="" (SET __MVNW_ARG0_NAME__=%~nx0)
+@SET __MVNW_CMD__=
+@SET __MVNW_ERROR__=
+@SET __MVNW_PSMODULEP_SAVE=%PSModulePath%
+@SET PSModulePath=
+@FOR /F "usebackq tokens=1* delims==" %%A IN (`powershell -noprofile "& {$scriptDir='%~dp0'; $script='%__MVNW_ARG0_NAME__%'; icm -ScriptBlock ([Scriptblock]::Create((Get-Content -Raw '%~f0'))) -NoNewScope}"`) DO @(
+  IF "%%A"=="MVN_CMD" (set __MVNW_CMD__=%%B) ELSE IF "%%B"=="" (echo %%A) ELSE (echo %%A=%%B)
+)
+@SET PSModulePath=%__MVNW_PSMODULEP_SAVE%
+@SET __MVNW_PSMODULEP_SAVE=
+@SET __MVNW_ARG0_NAME__=
+@SET MVNW_USERNAME=
+@SET MVNW_PASSWORD=
+@IF NOT "%__MVNW_CMD__%"=="" ("%__MVNW_CMD__%" %*)
+@echo Cannot start maven from wrapper >&2 && exit /b 1
+@GOTO :EOF
+: end batch / begin powershell #>
+
+$ErrorActionPreference = "Stop"
+if ($env:MVNW_VERBOSE -eq "true") {
+  $VerbosePreference = "Continue"
+}
+
+# calculate distributionUrl, requires .mvn/wrapper/maven-wrapper.properties
+$distributionUrl = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionUrl
+if (!$distributionUrl) {
+  Write-Error "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties"
+}
+
+switch -wildcard -casesensitive ( $($distributionUrl -replace '^.*/','') ) {
+  "maven-mvnd-*" {
+    $USE_MVND = $true
+    $distributionUrl = $distributionUrl -replace '-bin\.[^.]*$',"-windows-amd64.zip"
+    $MVN_CMD = "mvnd.cmd"
+    break
+  }
+  default {
+    $USE_MVND = $false
+    $MVN_CMD = $script -replace '^mvnw','mvn'
+    break
+  }
+}
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-<version>,maven-mvnd-<version>-<platform>}/<hash>
+if ($env:MVNW_REPOURL) {
+  $MVNW_REPO_PATTERN = if ($USE_MVND -eq $False) { "/org/apache/maven/" } else { "/maven/mvnd/" }
+  $distributionUrl = "$env:MVNW_REPOURL$MVNW_REPO_PATTERN$($distributionUrl -replace "^.*$MVNW_REPO_PATTERN",'')"
+}
+$distributionUrlName = $distributionUrl -replace '^.*/',''
+$distributionUrlNameMain = $distributionUrlName -replace '\.[^.]*$','' -replace '-bin$',''
+
+$MAVEN_M2_PATH = "$HOME/.m2"
+if ($env:MAVEN_USER_HOME) {
+  $MAVEN_M2_PATH = "$env:MAVEN_USER_HOME"
+}
+
+if (-not (Test-Path -Path $MAVEN_M2_PATH)) {
+    New-Item -Path $MAVEN_M2_PATH -ItemType Directory | Out-Null
+}
+
+$MAVEN_WRAPPER_DISTS = $null
+if ((Get-Item $MAVEN_M2_PATH).Target[0] -eq $null) {
+  $MAVEN_WRAPPER_DISTS = "$MAVEN_M2_PATH/wrapper/dists"
+} else {
+  $MAVEN_WRAPPER_DISTS = (Get-Item $MAVEN_M2_PATH).Target[0] + "/wrapper/dists"
+}
+
+$MAVEN_HOME_PARENT = "$MAVEN_WRAPPER_DISTS/$distributionUrlNameMain"
+$MAVEN_HOME_NAME = ([System.Security.Cryptography.SHA256]::Create().ComputeHash([byte[]][char[]]$distributionUrl) | ForEach-Object {$_.ToString("x2")}) -join ''
+$MAVEN_HOME = "$MAVEN_HOME_PARENT/$MAVEN_HOME_NAME"
+
+if (Test-Path -Path "$MAVEN_HOME" -PathType Container) {
+  Write-Verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+  Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
+  exit $?
+}
+
+if (! $distributionUrlNameMain -or ($distributionUrlName -eq $distributionUrlNameMain)) {
+  Write-Error "distributionUrl is not valid, must end with *-bin.zip, but found $distributionUrl"
+}
+
+# prepare tmp dir
+$TMP_DOWNLOAD_DIR_HOLDER = New-TemporaryFile
+$TMP_DOWNLOAD_DIR = New-Item -Itemtype Directory -Path "$TMP_DOWNLOAD_DIR_HOLDER.dir"
+$TMP_DOWNLOAD_DIR_HOLDER.Delete() | Out-Null
+trap {
+  if ($TMP_DOWNLOAD_DIR.Exists) {
+    try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+    catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+  }
+}
+
+New-Item -Itemtype Directory -Path "$MAVEN_HOME_PARENT" -Force | Out-Null
+
+# Download and Install Apache Maven
+Write-Verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+Write-Verbose "Downloading from: $distributionUrl"
+Write-Verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+$webclient = New-Object System.Net.WebClient
+if ($env:MVNW_USERNAME -and $env:MVNW_PASSWORD) {
+  $webclient.Credentials = New-Object System.Net.NetworkCredential($env:MVNW_USERNAME, $env:MVNW_PASSWORD)
+}
+[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
+$webclient.DownloadFile($distributionUrl, "$TMP_DOWNLOAD_DIR/$distributionUrlName") | Out-Null
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+$distributionSha256Sum = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionSha256Sum
+if ($distributionSha256Sum) {
+  if ($USE_MVND) {
+    Write-Error "Checksum validation is not supported for maven-mvnd. `nPlease disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties."
+  }
+  Import-Module $PSHOME\Modules\Microsoft.PowerShell.Utility -Function Get-FileHash
+  if ((Get-FileHash "$TMP_DOWNLOAD_DIR/$distributionUrlName" -Algorithm SHA256).Hash.ToLower() -ne $distributionSha256Sum) {
+    Write-Error "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised. If you updated your Maven version, you need to update the specified distributionSha256Sum property."
+  }
+}
+
+# unzip and move
+Expand-Archive "$TMP_DOWNLOAD_DIR/$distributionUrlName" -DestinationPath "$TMP_DOWNLOAD_DIR" | Out-Null
+
+# Find the actual extracted directory name (handles snapshots where filename != directory name)
+$actualDistributionDir = ""
+
+# First try the expected directory name (for regular distributions)
+$expectedPath = Join-Path "$TMP_DOWNLOAD_DIR" "$distributionUrlNameMain"
+$expectedMvnPath = Join-Path "$expectedPath" "bin/$MVN_CMD"
+if ((Test-Path -Path $expectedPath -PathType Container) -and (Test-Path -Path $expectedMvnPath -PathType Leaf)) {
+  $actualDistributionDir = $distributionUrlNameMain
+}
+
+# If not found, search for any directory with the Maven executable (for snapshots)
+if (!$actualDistributionDir) {
+  Get-ChildItem -Path "$TMP_DOWNLOAD_DIR" -Directory | ForEach-Object {
+    $testPath = Join-Path $_.FullName "bin/$MVN_CMD"
+    if (Test-Path -Path $testPath -PathType Leaf) {
+      $actualDistributionDir = $_.Name
+    }
+  }
+}
+
+if (!$actualDistributionDir) {
+  Write-Error "Could not find Maven distribution directory in extracted archive"
+}
+
+Write-Verbose "Found extracted Maven distribution directory: $actualDistributionDir"
+Rename-Item -Path "$TMP_DOWNLOAD_DIR/$actualDistributionDir" -NewName $MAVEN_HOME_NAME | Out-Null
+try {
+  Move-Item -Path "$TMP_DOWNLOAD_DIR/$MAVEN_HOME_NAME" -Destination $MAVEN_HOME_PARENT | Out-Null
+} catch {
+  if (! (Test-Path -Path "$MAVEN_HOME" -PathType Container)) {
+    Write-Error "fail to move MAVEN_HOME"
+  }
+} finally {
+  try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+  catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+}
+
+Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
--- a/pom.xml
+++ b/pom.xml
@@ -0,0 +1,51 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>com.blackjack</groupId>
+    <artifactId>blackjack-desktop</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
+        <javafx.version>21</javafx.version>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.openjfx</groupId>
+            <artifactId>javafx-controls</artifactId>
+            <version>${javafx.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.openjfx</groupId>
+            <artifactId>javafx-fxml</artifactId>
+            <version>${javafx.version}</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.11.0</version>
+                <configuration>
+                    <source>17</source>
+                    <target>17</target>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.openjfx</groupId>
+                <artifactId>javafx-maven-plugin</artifactId>
+                <version>0.0.8</version>
+                <configuration>
+                    <mainClass>com.blackjack.BlackjackApp</mainClass>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+</project>
--- a/src/main/java/com/blackjack/BlackjackApp.java
+++ b/src/main/java/com/blackjack/BlackjackApp.java
@@ -0,0 +1,255 @@
+package com.blackjack;
+
+import com.blackjack.model.*;
+import javafx.application.Application;
+import javafx.geometry.Insets;
+import javafx.geometry.Pos;
+import javafx.scene.Scene;
+import javafx.scene.control.Button;
+import javafx.scene.control.Label;
+import javafx.scene.layout.*;
+import javafx.scene.shape.Rectangle;
+import javafx.stage.Stage;
+
+public class BlackjackApp extends Application {
+
+    // --- Estado do Jogo ---
+    private Baralho baralho;
+    private Mao maoJogador;
+    private Mao maoDealer;
+    private boolean jogoEmAndamento;
+
+    // --- Elementos de UI ---
+    private HBox containerCartasDealer;
+    private HBox containerCartasJogador;
+    private Label lblPontosDealer;
+    private Label lblPontosJogador;
+    private Label lblMensagem;
+
+    private Button btnPedir;
+    private Button btnParar;
+    private Button btnNovoJogo;
+
+    @Override
+    public void start(Stage stage) {
+        // Inicialização dos Modelos
+        baralho = new Baralho();
+        maoJogador = new Mao();
+        maoDealer = new Mao();
+
+        // --- Construção da Interface ---
+
+        // 1. Cabeçalho
+        Label titulo = new Label("BLACKJACK 21");
+        titulo.getStyleClass().add("titulo-principal");
+
+        // 2. Área do Dealer
+        lblPontosDealer = new Label("Dealer: 0");
+        lblPontosDealer.getStyleClass().add("titulo-area");
+
+        containerCartasDealer = new HBox(10);
+        containerCartasDealer.setAlignment(Pos.CENTER);
+
+        VBox areaDealer = new VBox(10, lblPontosDealer, containerCartasDealer);
+        areaDealer.getStyleClass().add("area-jogo");
+
+        // 3. Status do Jogo
+        lblMensagem = new Label("Bem-vindo!");
+        lblMensagem.getStyleClass().add("status-msg");
+
+        // 4. Área do Jogador
+        lblPontosJogador = new Label("Você: 0");
+        lblPontosJogador.getStyleClass().add("titulo-area");
+
+        containerCartasJogador = new HBox(10);
+        containerCartasJogador.setAlignment(Pos.CENTER);
+
+        VBox areaJogador = new VBox(10, lblPontosJogador, containerCartasJogador);
+        areaJogador.getStyleClass().add("area-jogo");
+
+        // 5. Controles
+        HBox controles = new HBox(20);
+        controles.setAlignment(Pos.CENTER);
+        controles.setPadding(new Insets(20));
+
+        btnPedir = new Button("PEDIR CARTA");
+        btnParar = new Button("PARAR (STAND)");
+        btnNovoJogo = new Button("NOVO JOGO");
+
+        // Ações dos Botões
+        btnPedir.setOnAction(e -> acaoPedirCarta());
+        btnParar.setOnAction(e -> acaoParar());
+        btnNovoJogo.setOnAction(e -> iniciarJogo());
+
+        controles.getChildren().addAll(btnPedir, btnParar, btnNovoJogo);
+
+        // --- Layout Principal ---
+        VBox root = new VBox(20);
+        root.setAlignment(Pos.TOP_CENTER);
+        root.setPadding(new Insets(20));
+        root.getChildren().addAll(titulo, areaDealer, lblMensagem, areaJogador, controles);
+
+        // Configuração da Cena
+        Scene scene = new Scene(root, 900, 700);
+
+        // Importante: Carregando o CSS
+        String css = getClass().getResource("/styles.css").toExternalForm();
+        scene.getStylesheets().add(css);
+
+        stage.setTitle("Blackjack Desktop - JavaFX");
+        stage.setScene(scene);
+        stage.show();
+
+        // Começar o primeiro jogo
+        iniciarJogo();
+    }
+
+    // --- Lógica do Jogo (Game Loop) ---
+
+    private void iniciarJogo() {
+        jogoEmAndamento = true;
+        baralho.reiniciar();
+        maoJogador.limpar();
+        maoDealer.limpar();
+
+        lblMensagem.setText("Sua vez. Pedir ou Parar?");
+        atualizarBotoes(true);
+
+        // Distribuição inicial
+        maoJogador.adicionar(baralho.comprar());
+        maoDealer.adicionar(baralho.comprar());
+        maoJogador.adicionar(baralho.comprar());
+        maoDealer.adicionar(baralho.comprar());
+
+        // Verifica Blackjack instantâneo
+        if (maoJogador.calcularPontuacao() == 21) {
+            finalizarJogo("Blackjack! Você venceu!");
+        }
+
+        atualizarMesa(false); // false = esconde a primeira carta do dealer
+    }
+
+    private void acaoPedirCarta() {
+        if (!jogoEmAndamento) return;
+
+        maoJogador.adicionar(baralho.comprar());
+        atualizarMesa(false);
+
+        if (maoJogador.calcularPontuacao() > 21) {
+            finalizarJogo("Você estourou! Dealer vence.");
+        }
+    }
+
+    private void acaoParar() {
+        if (!jogoEmAndamento) return;
+
+        // Vez do Dealer
+        while (maoDealer.calcularPontuacao() < 17) {
+            maoDealer.adicionar(baralho.comprar());
+        }
+
+        determinarVencedor();
+    }
+
+    private void determinarVencedor() {
+        int ptsJogador = maoJogador.calcularPontuacao();
+        int ptsDealer = maoDealer.calcularPontuacao();
+
+        // Atualiza mostrando a carta oculta
+        atualizarMesa(true);
+
+        if (ptsDealer > 21) {
+            finalizarJogo("Dealer estourou! Você venceu!");
+        } else if (ptsJogador > ptsDealer) {
+            finalizarJogo("Você venceu!");
+        } else if (ptsDealer > ptsJogador) {
+            finalizarJogo("Dealer venceu.");
+        } else {
+            finalizarJogo("Empate!");
+        }
+    }
+
+    private void finalizarJogo(String msg) {
+        jogoEmAndamento = false;
+        lblMensagem.setText(msg);
+        atualizarBotoes(false);
+        atualizarMesa(true); // Revela tudo no final
+    }
+
+    private void atualizarBotoes(boolean jogando) {
+        btnPedir.setDisable(!jogando);
+        btnParar.setDisable(!jogando);
+        btnNovoJogo.setDisable(jogando);
+    }
+
+    // --- Renderização Visual (O "DOM" do JavaFX) ---
+
+    private void atualizarMesa(boolean mostrarTudoDealer) {
+        // 1. Renderizar Jogador
+        containerCartasJogador.getChildren().clear();
+        for (Carta c : maoJogador.getCartas()) {
+            containerCartasJogador.getChildren().add(criarCartaVisual(c));
+        }
+        lblPontosJogador.setText("Você: " + maoJogador.calcularPontuacao());
+
+        // 2. Renderizar Dealer
+        containerCartasDealer.getChildren().clear();
+        var cartasD = maoDealer.getCartas();
+
+        for (int i = 0; i < cartasD.size(); i++) {
+            if (i == 0 && !mostrarTudoDealer) {
+                containerCartasDealer.getChildren().add(criarCartaVerso());
+            } else {
+                containerCartasDealer.getChildren().add(criarCartaVisual(cartasD.get(i)));
+            }
+        }
+
+        // Placar Dealer (esconde pontuação total se carta estiver oculta)
+        if (mostrarTudoDealer) {
+            lblPontosDealer.setText("Dealer: " + maoDealer.calcularPontuacao());
+        } else {
+            // Mostra pontuação apenas das cartas visíveis (a partir da segunda)
+            // Simplificação: mostra "?" ou recalcula sem a primeira
+            lblPontosDealer.setText("Dealer: ?");
+        }
+    }
+
+    // Cria o componente visual da carta (StackPane)
+    private StackPane criarCartaVisual(Carta carta) {
+        StackPane cardPane = new StackPane();
+        cardPane.getStyleClass().add("carta");
+
+        // Rank Topo Esquerdo
+        Label lblRankTop = new Label(carta.rank().display);
+        lblRankTop.getStyleClass().addAll("carta-texto", carta.nipe().corCss);
+        StackPane.setAlignment(lblRankTop, Pos.TOP_LEFT);
+        StackPane.setMargin(lblRankTop, new Insets(5));
+
+        // Naipe Centro
+        Label lblNaipe = new Label(carta.nipe().simbolo);
+        lblNaipe.getStyleClass().addAll("carta-naipe-grande", carta.nipe().corCss);
+        StackPane.setAlignment(lblNaipe, Pos.CENTER);
+
+        // Rank Base Direito (invertido opcionalmente, aqui normal)
+        Label lblRankBot = new Label(carta.rank().display);
+        lblRankBot.getStyleClass().addAll("carta-texto", carta.nipe().corCss);
+        StackPane.setAlignment(lblRankBot, Pos.BOTTOM_RIGHT);
+        StackPane.setMargin(lblRankBot, new Insets(5));
+
+        cardPane.getChildren().addAll(lblRankTop, lblNaipe, lblRankBot);
+        return cardPane;
+    }
+
+    private StackPane criarCartaVerso() {
+        StackPane cardPane = new StackPane();
+        cardPane.getStyleClass().addAll("carta", "carta-oculta");
+        Label inter = new Label("?");
+        inter.setStyle("-fx-text-fill: white; -fx-font-size: 30px;");
+        cardPane.getChildren().add(inter);
+        return cardPane;
+    }
+
+    public static void main(String[] args) {
+        launch();
+    }
+}
--- a/src/main/java/com/blackjack/Launcher.java
+++ b/src/main/java/com/blackjack/Launcher.java
@@ -0,0 +1,7 @@
+package com.blackjack;
+
+public class Launcher {
+    public static void main(String[] args) {
+        BlackjackApp.main(args);
+    }
+}
--- a/src/main/java/com/blackjack/model/Baralho.java
+++ b/src/main/java/com/blackjack/model/Baralho.java
@@ -0,0 +1,22 @@
+package com.blackjack.model;
+
+import java.util.Collections;
+import java.util.Stack;
+
+public class Baralho {
+    private final Stack<Carta> cartas = new Stack<>();
+
+    public void reiniciar() {
+        cartas.clear();
+        for (Nipe n : Nipe.values()) {
+            for (Rank r : Rank.values()) {
+                cartas.push(new Carta(n, r));
+            }
+        }
+        Collections.shuffle(cartas); // O shuffle do Java é mais otimizado que o manual
+    }
+
+    public Carta comprar() {
+        return cartas.isEmpty() ? null : cartas.pop();
+    }
+}
--- a/src/main/java/com/blackjack/model/Carta.java
+++ b/src/main/java/com/blackjack/model/Carta.java
@@ -0,0 +1,8 @@
+package com.blackjack.model;
+
+public record Carta(Nipe nipe, Rank rank) {
+    @Override
+    public String toString() {
+        return rank.display + nipe.simbolo;
+    }
+}
--- a/src/main/java/com/blackjack/model/Mao.java
+++ b/src/main/java/com/blackjack/model/Mao.java
@@ -0,0 +1,37 @@
+package com.blackjack.model;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Mao {
+    private final List<Carta> cartas = new ArrayList<>();
+
+    public void adicionar(Carta c) {
+        cartas.add(c);
+    }
+
+    public void limpar() {
+        cartas.clear();
+    }
+
+    public List<Carta> getCartas() {
+        return cartas;
+    }
+
+    public int calcularPontuacao() {
+        int pontos = 0;
+        int ases = 0;
+
+        for (Carta c : cartas) {
+            pontos += c.rank().valorBase;
+            if (c.rank() == Rank.AS) ases++;
+        }
+
+        // Lógica do Ás: se estourar 21, conta como 1 (subtrai 10)
+        while (pontos > 21 && ases > 0) {
+            pontos -= 10;
+            ases--;
+        }
+        return pontos;
+    }
+}
--- a/src/main/java/com/blackjack/model/Nipe.java
+++ b/src/main/java/com/blackjack/model/Nipe.java
@@ -0,0 +1,16 @@
+package com.blackjack.model;
+
+public enum Nipe {
+    COPAS("♥", "red"),
+    OUROS("♦", "red"),
+    PAUS("♣", "black"),
+    ESPADAS("♠", "black");
+
+    public final String simbolo;
+    public final String corCss;
+
+    Nipe(String simbolo, String corCss) {
+        this.simbolo = simbolo;
+        this.corCss = corCss;
+    }
+}
--- a/src/main/java/com/blackjack/model/Rank.java
+++ b/src/main/java/com/blackjack/model/Rank.java
@@ -0,0 +1,16 @@
+package com.blackjack.model;
+
+public enum Rank {
+    DOIS("2", 2), TRES("3", 3), QUATRO("4", 4), CINCO("5", 5),
+    SEIS("6", 6), SETE("7", 7), OITO("8", 8), NOVE("9", 9),
+    DEZ("10", 10), VALETE("J", 10), DAMA("Q", 10), REI("K", 10),
+    AS("A", 11);
+
+    public final String display;
+    public final int valorBase;
+
+    Rank(String display, int valorBase) {
+        this.display = display;
+        this.valorBase = valorBase;
+    }
+}
--- a/src/main/resources/styles.css
+++ b/src/main/resources/styles.css
@@ -0,0 +1,93 @@
+.root {
+    -fx-background-color: #0a5c0a; /* Verde clássico */
+    -fx-font-family: 'Arial';
+}
+
+/* Títulos */
+.titulo-principal {
+    -fx-text-fill: white;
+    -fx-font-size: 32px;
+    -fx-font-weight: bold;
+    -fx-padding: 20;
+    -fx-effect: dropshadow(three-pass-box, rgba(0,0,0,0.5), 5, 0, 0, 1);
+}
+
+.titulo-area {
+    -fx-text-fill: #ffc107; /* Dourado */
+    -fx-font-size: 18px;
+    -fx-font-weight: bold;
+}
+
+/* Container das Mãos (Areas) */
+.area-jogo {
+    -fx-background-color: rgba(0, 0, 0, 0.2);
+    -fx-border-color: #ffc107;
+    -fx-border-width: 2;
+    -fx-border-radius: 10;
+    -fx-background-radius: 10;
+    -fx-padding: 20;
+    -fx-spacing: 15;
+    -fx-alignment: center;
+    -fx-min-width: 600;
+}
+
+/* A Carta Visual */
+.carta {
+    -fx-background-color: white;
+    -fx-background-radius: 8;
+    -fx-border-color: #333;
+    -fx-border-radius: 8;
+    -fx-border-width: 1;
+    -fx-pref-width: 80;
+    -fx-pref-height: 120;
+    -fx-effect: dropshadow(three-pass-box, rgba(0,0,0,0.4), 8, 0, 2, 2);
+}
+
+.carta-texto {
+    -fx-font-size: 18px;
+    -fx-font-weight: bold;
+}
+
+.carta-naipe-grande {
+    -fx-font-size: 36px;
+}
+
+.red { -fx-text-fill: #d90000; }
+.black { -fx-text-fill: black; }
+
+/* Carta Oculta (Verso) */
+.carta-oculta {
+    -fx-background-color: linear-gradient(to bottom right, #444, #666);
+    -fx-background-radius: 8;
+    -fx-border-color: white;
+    -fx-border-width: 2;
+    -fx-border-style: solid;
+}
+
+/* Mensagem de Status */
+.status-msg {
+    -fx-text-fill: white;
+    -fx-font-size: 24px;
+    -fx-font-weight: bold;
+    -fx-padding: 10;
+}
+
+/* Botões */
+.button {
+    -fx-background-color: #ffc107;
+    -fx-text-fill: #333;
+    -fx-font-size: 14px;
+    -fx-font-weight: bold;
+    -fx-background-radius: 5;
+    -fx-cursor: hand;
+    -fx-padding: 10 20;
+}
+
+.button:hover {
+    -fx-background-color: #ffd54f;
+}
+
+.button:disabled {
+    -fx-background-color: #999;
+    -fx-opacity: 0.7;
+}
--- a/target/classes/com/blackjack/BlackjackApp.class
+++ b/target/classes/com/blackjack/BlackjackApp.class
--- a/target/classes/com/blackjack/Launcher.class
+++ b/target/classes/com/blackjack/Launcher.class
--- a/target/classes/com/blackjack/model/Baralho.class
+++ b/target/classes/com/blackjack/model/Baralho.class
--- a/target/classes/com/blackjack/model/Carta.class
+++ b/target/classes/com/blackjack/model/Carta.class
--- a/target/classes/com/blackjack/model/Mao.class
+++ b/target/classes/com/blackjack/model/Mao.class
--- a/target/classes/com/blackjack/model/Nipe.class
+++ b/target/classes/com/blackjack/model/Nipe.class
--- a/target/classes/com/blackjack/model/Rank.class
+++ b/target/classes/com/blackjack/model/Rank.class
--- a/target/classes/styles.css
+++ b/target/classes/styles.css
@@ -0,0 +1,93 @@
+.root {
+    -fx-background-color: #0a5c0a; /* Verde clássico */
+    -fx-font-family: 'Arial';
+}
+
+/* Títulos */
+.titulo-principal {
+    -fx-text-fill: white;
+    -fx-font-size: 32px;
+    -fx-font-weight: bold;
+    -fx-padding: 20;
+    -fx-effect: dropshadow(three-pass-box, rgba(0,0,0,0.5), 5, 0, 0, 1);
+}
+
+.titulo-area {
+    -fx-text-fill: #ffc107; /* Dourado */
+    -fx-font-size: 18px;
+    -fx-font-weight: bold;
+}
+
+/* Container das Mãos (Areas) */
+.area-jogo {
+    -fx-background-color: rgba(0, 0, 0, 0.2);
+    -fx-border-color: #ffc107;
+    -fx-border-width: 2;
+    -fx-border-radius: 10;
+    -fx-background-radius: 10;
+    -fx-padding: 20;
+    -fx-spacing: 15;
+    -fx-alignment: center;
+    -fx-min-width: 600;
+}
+
+/* A Carta Visual */
+.carta {
+    -fx-background-color: white;
+    -fx-background-radius: 8;
+    -fx-border-color: #333;
+    -fx-border-radius: 8;
+    -fx-border-width: 1;
+    -fx-pref-width: 80;
+    -fx-pref-height: 120;
+    -fx-effect: dropshadow(three-pass-box, rgba(0,0,0,0.4), 8, 0, 2, 2);
+}
+
+.carta-texto {
+    -fx-font-size: 18px;
+    -fx-font-weight: bold;
+}
+
+.carta-naipe-grande {
+    -fx-font-size: 36px;
+}
+
+.red { -fx-text-fill: #d90000; }
+.black { -fx-text-fill: black; }
+
+/* Carta Oculta (Verso) */
+.carta-oculta {
+    -fx-background-color: linear-gradient(to bottom right, #444, #666);
+    -fx-background-radius: 8;
+    -fx-border-color: white;
+    -fx-border-width: 2;
+    -fx-border-style: solid;
+}
+
+/* Mensagem de Status */
+.status-msg {
+    -fx-text-fill: white;
+    -fx-font-size: 24px;
+    -fx-font-weight: bold;
+    -fx-padding: 10;
+}
+
+/* Botões */
+.button {
+    -fx-background-color: #ffc107;
+    -fx-text-fill: #333;
+    -fx-font-size: 14px;
+    -fx-font-weight: bold;
+    -fx-background-radius: 5;
+    -fx-cursor: hand;
+    -fx-padding: 10 20;
+}
+
+.button:hover {
+    -fx-background-color: #ffd54f;
+}
+
+.button:disabled {
+    -fx-background-color: #999;
+    -fx-opacity: 0.7;
+}
--- a/target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst
+++ b/target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst
@@ -0,0 +1,7 @@
+com\blackjack\model\Baralho.class
+com\blackjack\model\Mao.class
+com\blackjack\model\Rank.class
+com\blackjack\BlackjackApp.class
+com\blackjack\model\Carta.class
+com\blackjack\model\Nipe.class
+com\blackjack\Launcher.class
--- a/target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst
+++ b/target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst
@@ -0,0 +1,7 @@
+C:\Users\smaker\Downloads\jogo_blackjack_21_fx\jogo_blackjack_21_fx\src\main\java\com\blackjack\Launcher.java
+C:\Users\smaker\Downloads\jogo_blackjack_21_fx\jogo_blackjack_21_fx\src\main\java\com\blackjack\BlackjackApp.java
+C:\Users\smaker\Downloads\jogo_blackjack_21_fx\jogo_blackjack_21_fx\src\main\java\com\blackjack\model\Rank.java
+C:\Users\smaker\Downloads\jogo_blackjack_21_fx\jogo_blackjack_21_fx\src\main\java\com\blackjack\model\Mao.java
+C:\Users\smaker\Downloads\jogo_blackjack_21_fx\jogo_blackjack_21_fx\src\main\java\com\blackjack\model\Carta.java
+C:\Users\smaker\Downloads\jogo_blackjack_21_fx\jogo_blackjack_21_fx\src\main\java\com\blackjack\model\Baralho.java
+C:\Users\smaker\Downloads\jogo_blackjack_21_fx\jogo_blackjack_21_fx\src\main\java\com\blackjack\model\Nipe.java