ADD file via upload

Car.java

@@ -0,0 +1,199 @@
+package com.car.model;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * 汽车类 - 主类，包含多个组件的组合关系
+ */
+public class Car {
+    private String brand;
+    private String model;
+    private String year;
+    
+    // 组合关系组件
+    private SteeringWheel steeringWheel; // 方向盘
+    private List<Seat> seats; // 座椅列表
+    private Engine engine; // 引擎
+    private Transmission transmission; // 变速箱
+    private ElectronicSystem electronicSystem; // 电子系统
+    private List<Wheel> wheels; // 车轮列表
+    
+    /**
+     * 构造方法
+     * @param brand 品牌
+     * @param model 型号
+     * @param year 年份
+     */
+    public Car(String brand, String model, String year) {
+        this.brand = brand;
+        this.model = model;
+        this.year = year;
+        
+        // 初始化基础组件
+        this.steeringWheel = new SteeringWheel("Leather", "380mm", true);
+        this.seats = new ArrayList<>();
+        this.engine = new Engine("V6", 300, 3.5, 6);
+        this.transmission = new Transmission("Automatic", 8, true);
+        this.electronicSystem = new ElectronicSystem("v1.0");
+        this.wheels = new ArrayList<>();
+        
+        // 初始化座椅
+        seats.add(new Seat("Driver", "Leather", true, true));
+        seats.add(new Seat("Passenger", "Leather", true, true));
+        
+        // 初始化车轮
+        for (int i = 0; i < 4; i++) {
+            wheels.add(new Wheel("18 inch", "All-season", 32));
+        }
+    }
+    
+    /**
+     * 启动汽车
+     */
+    public void start() {
+        System.out.println(brand + " " + model + " starting...");
+        System.out.println("Engine started: " + engine.getType());
+        System.out.println("Electronic systems initialized.");
+    }
+    
+    /**
+     * 停止汽车
+     */
+    public void stop() {
+        System.out.println(brand + " " + model + " stopping...");
+        System.out.println("Engine stopped.");
+    }
+    
+    /**
+     * 更换方向盘
+     * @param newSteeringWheel 新的方向盘
+     */
+    public void replaceSteeringWheel(SteeringWheel newSteeringWheel) {
+        this.steeringWheel = newSteeringWheel;
+        System.out.println("Steering wheel replaced.");
+    }
+    
+    /**
+     * 更换座椅
+     * @param index 座椅索引
+     * @param newSeat 新的座椅
+     * @return 是否更换成功
+     */
+    public boolean replaceSeat(int index, Seat newSeat) {
+        if (index >= 0 && index < seats.size()) {
+            seats.set(index, newSeat);
+            System.out.println("Seat at position " + index + " replaced.");
+            return true;
+        }
+        return false;
+    }
+    
+    /**
+     * 更换车轮
+     * @param index 车轮索引
+     * @param newWheel 新的车轮
+     * @return 是否更换成功
+     */
+    public boolean replaceWheel(int index, Wheel newWheel) {
+        if (index >= 0 && index < wheels.size()) {
+            wheels.set(index, newWheel);
+            System.out.println("Wheel at position " + index + " replaced.");
+            return true;
+        }
+        return false;
+    }
+    
+    /**
+     * 运行汽车诊断
+     * @return 诊断结果
+     */
+    public boolean runDiagnostics() {
+        System.out.println("Running diagnostics for " + brand + " " + model + "...");
+        boolean engineOk = true; // 简化处理
+        boolean electronicOk = electronicSystem.runDiagnostics();
+        
+        // 检查轮胎气压
+        boolean wheelsOk = true;
+        for (int i = 0; i < wheels.size(); i++) {
+            if (!wheels.get(i).checkPressure()) {
+                System.out.println("Wheel " + i + " pressure issue detected!");
+                wheelsOk = false;
+            }
+        }
+        
+        boolean overallStatus = engineOk && electronicOk && wheelsOk;
+        System.out.println("Diagnostics completed. Overall status: " + (overallStatus ? "OK" : "Issues detected"));
+        return overallStatus;
+    }
+    
+    // getter and setter methods
+    public String getBrand() {
+        return brand;
+    }
+    
+    public void setBrand(String brand) {
+        this.brand = brand;
+    }
+    
+    public String getModel() {
+        return model;
+    }
+    
+    public void setModel(String model) {
+        this.model = model;
+    }
+    
+    public String getYear() {
+        return year;
+    }
+    
+    public void setYear(String year) {
+        this.year = year;
+    }
+    
+    public SteeringWheel getSteeringWheel() {
+        return steeringWheel;
+    }
+    
+    public void setSteeringWheel(SteeringWheel steeringWheel) {
+        this.steeringWheel = steeringWheel;
+    }
+    
+    public List<Seat> getSeats() {
+        return new ArrayList<>(seats);
+    }
+    
+    public Engine getEngine() {
+        return engine;
+    }
+    
+    public void setEngine(Engine engine) {
+        this.engine = engine;
+    }
+    
+    public Transmission getTransmission() {
+        return transmission;
+    }
+    
+    public void setTransmission(Transmission transmission) {
+        this.transmission = transmission;
+    }
+    
+    public ElectronicSystem getElectronicSystem() {
+        return electronicSystem;
+    }
+    
+    public void setElectronicSystem(ElectronicSystem electronicSystem) {
+        this.electronicSystem = electronicSystem;
+    }
+    
+    public List<Wheel> getWheels() {
+        return new ArrayList<>(wheels);
+    }
+    
+    @Override
+    public String toString() {
+        return "Car [brand=" + brand + ", model=" + model + ", year=" + year + ", engine=" + engine + ", transmission=" + transmission + "]";
+    }
+}