ADD file via upload

ElectronicSystem.java

@@ -0,0 +1,90 @@
+package com.car.model;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * 汽车电子系统类 - 汽车的电子控制中心
+ * 与Car类是组合关系，包含多个ElectronicControlUnit组件
+ */
+public class ElectronicSystem {
+    private List<ElectronicControlUnit> ecuList; // ECU列表 - 组合关系
+    private String systemVersion; // 系统版本
+    
+    /**
+     * 构造方法
+     * @param systemVersion 系统版本
+     */
+    public ElectronicSystem(String systemVersion) {
+        this.systemVersion = systemVersion;
+        this.ecuList = new ArrayList<>();
+        
+        // 初始化基本的ECU组件
+        initializeECUs();
+    }
+    
+    /**
+     * 初始化基础ECU组件
+     */
+    private void initializeECUs() {
+        addECU(new ElectronicControlUnit("Engine ECU", "Controls engine performance"));
+        addECU(new ElectronicControlUnit("ABS ECU", "Controls anti-lock braking system"));
+        addECU(new ElectronicControlUnit("Body ECU", "Controls body functions"));
+        addECU(new ElectronicControlUnit("Transmission ECU", "Controls transmission shifting"));
+    }
+    
+    /**
+     * 添加ECU到系统
+     * @param ecu 电子控制单元
+     */
+    public void addECU(ElectronicControlUnit ecu) {
+        ecuList.add(ecu);
+    }
+    
+    /**
+     * 替换指定的ECU
+     * @param index ECU索引
+     * @param newEcu 新的ECU
+     * @return 是否替换成功
+     */
+    public boolean replaceECU(int index, ElectronicControlUnit newEcu) {
+        if (index >= 0 && index < ecuList.size()) {
+            ecuList.set(index, newEcu);
+            return true;
+        }
+        return false;
+    }
+    
+    /**
+     * 系统诊断 - 检查所有ECU状态
+     * @return 所有ECU的诊断结果
+     */
+    public boolean runDiagnostics() {
+        boolean allOperational = true;
+        for (ElectronicControlUnit ecu : ecuList) {
+            if (!ecu.diagnose()) {
+                System.out.println(ecu.getName() + " is not operational!");
+                allOperational = false;
+            }
+        }
+        return allOperational;
+    }
+    
+    // getter and setter methods
+    public List<ElectronicControlUnit> getEcuList() {
+        return new ArrayList<>(ecuList); // 返回副本，保持封装性
+    }
+    
+    public String getSystemVersion() {
+        return systemVersion;
+    }
+    
+    public void setSystemVersion(String systemVersion) {
+        this.systemVersion = systemVersion;
+    }
+    
+    @Override
+    public String toString() {
+        return "ElectronicSystem [systemVersion=" + systemVersion + ", ecuCount=" + ecuList.size() + "]";
+    }
+}