ADD file via upload

CarRepairSystem.java

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+package com.car.service;
+
+import com.car.model.*;
+
+/**
+ * 汽车维修系统类 - 展示组合关系中部件的更换和维修
+ */
+public class CarRepairSystem {
+    
+    /**
+     * 维修汽车
+     * @param car 需要维修的汽车
+     */
+    public void repairCar(Car car) {
+        System.out.println("Starting repair for " + car.getBrand() + " " + car.getModel() + "...");
+        
+        // 运行诊断
+        boolean diagnosticsResult = car.runDiagnostics();
+        
+        if (!diagnosticsResult) {
+            System.out.println("Repairing detected issues...");
+            // 这里可以添加具体的维修逻辑
+            fixCommonIssues(car);
+            System.out.println("Basic repairs completed. Running final diagnostics...");
+            car.runDiagnostics();
+        } else {
+            System.out.println("No issues detected. Car is in good condition.");
+        }
+        
+        System.out.println("Repair service completed.");
+    }
+    
+    /**
+     * 更换汽车部件
+     * @param car 汽车对象
+     * @param partType 部件类型
+     * @param partIndex 部件索引（多部件时使用）
+     */
+    public void replacePart(Car car, String partType, int partIndex) {
+        switch (partType.toLowerCase()) {
+            case "steeringwheel":
+                car.replaceSteeringWheel(new SteeringWheel("Premium Leather", "370mm", true));
+                System.out.println("Replaced steering wheel with premium leather version.");
+                break;
+            case "seat":
+                if (car.replaceSeat(partIndex, new Seat(
+                        partIndex == 0 ? "Driver" : "Passenger",
+                        "Memory Foam Leather",
+                        true,
+                        true))) {
+                    System.out.println("Seat replaced successfully.");
+                } else {
+                    System.out.println("Invalid seat position.");
+                }
+                break;
+            case "wheel":
+                if (car.replaceWheel(partIndex, new Wheel("19 inch", "All-season Performance", 32))) {
+                    System.out.println("Wheel replaced successfully.");
+                } else {
+                    System.out.println("Invalid wheel position.");
+                }
+                break;
+            case "engine":
+                car.setEngine(new Engine("V8", 450, 5.0, 8));
+                System.out.println("Engine replaced with V8 performance engine.");
+                break;
+            case "transmission":
+                car.setTransmission(new Transmission("Dual Clutch", 8, true));
+                System.out.println("Transmission replaced with dual-clutch system.");
+                break;
+            case "ecu":
+                ElectronicSystem es = car.getElectronicSystem();
+                if (es.replaceECU(partIndex, new ElectronicControlUnit(
+                        "Upgraded ECU", 
+                        "Enhanced performance control"))) {
+                    System.out.println("ECU replaced successfully.");
+                } else {
+                    System.out.println("Invalid ECU index.");
+                }
+                break;
+            default:
+                System.out.println("Unknown part type: " + partType);
+        }
+    }
+    
+    /**
+     * 检查和维修引擎活塞
+     * @param car 汽车对象
+     * @param pistonIndex 活塞索引
+     */
+    public void repairEnginePiston(Car car, int pistonIndex) {
+        Engine engine = car.getEngine();
+        if (engine.replacePiston(pistonIndex, new Piston(86, 89, "High-strength Aluminum", 11))) {
+            System.out.println("Engine piston " + pistonIndex + " replaced with high-performance version.");
+        } else {
+            System.out.println("Invalid piston index.");
+        }
+    }
+    
+    /**
+     * 修复常见问题
+     * @param car 汽车对象
+     */
+    private void fixCommonIssues(Car car) {
+        // 修复轮胎气压
+        for (int i = 0; i < car.getWheels().size(); i++) {
+            Wheel wheel = car.getWheels().get(i);
+            wheel.setPressure(32); // 设置标准气压
+            System.out.println("Adjusted wheel " + i + " pressure to standard level.");
+        }
+        
+        // 重置电子系统
+        ElectronicSystem es = car.getElectronicSystem();
+        for (ElectronicControlUnit ecu : es.getEcuList()) {
+            if (!ecu.isOperational()) {
+                ecu.reset();
+            }
+        }
+    }
+    
+    /**
+     * 执行定期保养
+     * @param car 汽车对象
+     */
+    public void performMaintenance(Car car) {
+        System.out.println("Performing scheduled maintenance for " + car.getBrand() + " " + car.getModel());
+        
+        // 检查并调整所有系统
+        System.out.println("- Checking engine oil level");
+        System.out.println("- Checking coolant level");
+        System.out.println("- Checking brake fluid");
+        System.out.println("- Inspecting tires");
+        System.out.println("- Lubricating moving parts");
+        
+        // 运行完整诊断
+        car.runDiagnostics();
+        
+        System.out.println("Maintenance completed successfully.");
+    }
+}