提交期末项目

README.md

@@ -1,2 +0,0 @@
-# java
-

W1-白慧娟-202506050330/AI_help.txt

@@ -0,0 +1,7 @@
+AI协助记录：
+
+在完成这次Java作业过程中，我使用了AI助手。首先，我请AI将Python温度转换程序改写为Java版本，AI提供了完整的代码和中文注释。
+
+在编译运行过程中遇到输入格式错误的问题，AI一步步指导我修改代码，采用分步输入温度和单位的方式，最终程序成功运行，可以正确转换摄氏度和华氏度。
+
+AI还帮我创建了README.md说明文档和output.txt运行结果文件，指导我完成所有作业要求。

W1-白慧娟-202506050330/README.md

@@ -0,0 +1,22 @@
+\# 温度转换程序
+
+
+
+\## 编译方法
+
+javac TemperatureConverter.java
+
+
+
+\## 运行方法
+
+java TemperatureConverter
+
+
+
+\## 运行示例
+
+输入：36.6 C
+
+输出：36.6℃ = 97.88℉
+

W1-白慧娟-202506050330/TemperatureConverter.java

@@ -0,0 +1,23 @@
+import java.util.Scanner;
+
+public class TemperatureConverter {
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        
+        System.out.println("请输入温度值：");
+        double value = scanner.nextDouble();
+        
+        System.out.println("请输入单位（C表示摄氏度，F表示华氏度）：");
+        String unit = scanner.next().toUpperCase();
+        
+        if (unit.equals("C")) {
+            double f = value * 9.0 / 5.0 + 32.0;
+            System.out.println(value + "℃ = " + f + "℉");
+        } else if (unit.equals("F")) {
+            double c = (value - 32.0) * 5.0 / 9.0;
+            System.out.println(value + "℉ = " + c + "℃");
+        }
+        
+        scanner.close();
+    }
+}

W1-白慧娟-202506050330/output.txt

@@ -0,0 +1,7 @@
+AI协助记录：
+
+本次作业使用AI助手将Python温度转换程序改写为Java版本。AI提供了完整的Java代码和中文注释。
+
+在运行过程中遇到输入格式问题，AI指导修改代码，采用分步输入的方式，解决了特殊符号解析问题。程序最终成功运行，能正确转换摄氏度和华氏度。
+
+AI还协助创建了README.md说明文档和output.txt运行结果文件，帮助完成所有作业要求。

student/StudentTest.java

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+public class StudentTest {public static void main(String[] args) {
+    Student stu1 = new Student();
+    stu1.studentId = "001";
+    stu1.name = "Wang";
+    stu1.score = 85.5;
+
+    Student stu2 = stu1;
+
+    stu1.study();
+    stu2.study();
+
+    System.out.println("stu1 的名字: " + stu1.name);
+    System.out.println("stu2 的名字: " + stu2.name);
+
+    stu2.name = "Li";
+
+    System.out.println("修改后 stu1 的名字: " + stu1.name);
+    System.out.println("修改后 stu2 的名字: " + stu2.name);
+}
+}
+class Student {String studentId;
+    String name;
+    double score;
+
+    public void study() {
+        System.out.println(name + " 正在学习");
+    }
+
+}

w1/HelloWorld.java

@@ -3,4 +3,3 @@ public class HelloWorld {
         System.out.println("Hello,World!");
     }
 }
-                                         

w10/AnalyzeCommand.java

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+package PACKAGE_NAME;
+
+public class AnalyzeCommand {
+}

w10/article.java

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+import java.util.Date;
+
+public class Article {
+    private String title;
+    private String content;
+    private String url;
+    private String author;        // 新增
+    private Date publishDate;     // 新增
+
+    // 构造器
+    public Article(String title, String content, String url, String author, Date publishDate) {
+        this.title = title;
+        this.content = content;
+        this.url = url;
+        this.author = author;
+        this.publishDate = publishDate;
+    }
+
+    // Getters and Setters
+    public String getAuthor() { return author; }
+    public void setAuthor(String author) { this.author = author; }
+
+    public Date getPublishDate() { return publishDate; }
+    public void setPublishDate(Date publishDate) { this.publishDate = publishDate; }
+
+    // 原有字段的 getter/setter...
+}

w10/articlerepository.java

@@ -0,0 +1,4 @@
+package PACKAGE_NAME;
+
+public class articlerepository {
+}

w11/ArticleA.java

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+import java.util.Date;
+
+public class article {
+    private String title;
+    private String content;
+    private String url;
+    private String author;        // 新增
+    private Date publishDate;     // 新增
+
+    // 构造器
+    public article(String title, String content, String url, String author, Date publishDate) {
+        this.title = title;
+        this.content = content;
+        this.url = url;
+        this.author = author;
+        this.publishDate = publishDate;
+    }
+
+    // Getters and Setters
+    public String getAuthor() { return author; }
+    public void setAuthor(String author) { this.author = author; }
+
+    public Date getPublishDate() { return publishDate; }
+    public void setPublishDate(Date publishDate) { this.publishDate = publishDate; }
+
+    // 原有字段的 getter/setter...
+}

w11/ArticleRepository.java

@@ -0,0 +1,4 @@
+package PACKAGE_NAME;
+
+public class ArticleRepository {
+}

w11/BlogStrategy.java

@@ -0,0 +1,4 @@
+package PACKAGE_NAME;
+
+public class BlogStrategy {
+}

w11/Command.java

@@ -0,0 +1,4 @@
+package PACKAGE_NAME;
+
+public class Command {
+}

w11/CrawlCommand.java

@@ -0,0 +1,4 @@
+package PACKAGE_NAME;
+
+public class CrawlCommand {
+}

w11/CrawlStrategy.java

@@ -0,0 +1,4 @@
+package PACKAGE_NAME;
+
+public class CrawlStrategy {
+}

w11/CrawlerException.java

@@ -0,0 +1,4 @@
+package PACKAGE_NAME;
+
+public class CrawlerException {
+}

w11/HnuNewsStrategy.java

@@ -0,0 +1,4 @@
+package PACKAGE_NAME;
+
+public class HnuNewsStrategy {
+}

w11/Main11.java

@@ -0,0 +1,4 @@
+package PACKAGE_NAME;
+
+public class Main {
+}

w11/NetworkException.java

@@ -0,0 +1,4 @@
+package PACKAGE_NAME;
+
+public class NetworkException {
+}

w11/NewsStrategy.java

@@ -0,0 +1,4 @@
+package PACKAGE_NAME;
+
+public class NewsStrategy {
+}

w11/ParseException.java

@@ -0,0 +1,4 @@
+package PACKAGE_NAME;
+
+public class ParseException {
+}

w2/DataCleaner.java

@@ -0,0 +1,32 @@
+public class DataCleaner {public static void main(String[] args) {
+    int[] sensorData = {85, -5, 92, 0, 105, 999, 88, 76};
+
+    int validSum = 0;     // 有效数据总和
+    int validCount = 0;   // 有效数据个数
+
+    for (int data : sensorData) {
+        if (data == 999) {
+            System.out.println("致命错误：传感器掉线，终止处理");
+            break;
+        }
+
+        if (data <= 0 || data > 100) {
+            System.out.println("警告：发现越界数据 " + data + "，已跳过");
+            continue;
+        }
+
+        // 正常范围：1 <= data <= 100
+        validSum += data;
+        validCount++;
+    }
+
+    // 最终输出
+    if (validCount > 0) {
+        double average = (double) validSum / validCount;
+        System.out.println("有效数据的平均值：" + average);
+    } else {
+        System.out.println("无有效数据");
+    }
+}
+}
+

w3/BankAccount.java

@@ -0,0 +1,56 @@
+public class BankAccount {
+    private final String accountNumber;
+    private String ownerName;
+    private double balance;
+
+    public BankAccount(){
+        this("000000","未命名");
+    }
+
+    public BankAccount(String accountNumber, String ownerName) {
+        this.accountNumber = accountNumber;
+        this.ownerName = ownerName;
+        this.balance=0.0;
+    }
+
+    public void setOwnerName(String ownerName) {
+        this.ownerName = ownerName;
+    }
+
+    public void deposit(double amount) {
+        if(amount>0){
+            this.balance += amount;
+            System.out.println("存款成功，当前余额：" +this.balance);
+        }else{
+            System.out.println("存款必须大于0");
+        }
+    }
+
+    public void withdraw(double amount) {
+        if(amount<=0){
+            System.out.println("取款金额必须大于0");
+        }else if(amount>this.balance){
+            System.out.println("金额不足，当前余额："+this.balance);
+        }else {
+            this.balance -= amount;
+            System.out.println("取款成功！当前余额：" + this.balance);
+        }
+    }
+
+    // 查询余额的方法
+    public double getBalance() {
+        return this.balance;
+    }
+
+    // 获取账户号的方法（因为账户号不可修改，只提供getter）
+    public String getAccountNumber() {
+        return this.accountNumber;
+    }
+
+    // 获取户主姓名的方法
+    public String getOwnerName() {
+        return this.ownerName;
+    }
+}
+
+

w3/Employee.java

@@ -0,0 +1,82 @@
+public class Employee  {
+    private String id;
+    private String name;
+    private String department;
+    private double salary;
+
+    // 全参构造方法
+    public Employee(String id, String name, String department, double salary) {
+        this.id = id;
+        this.name = name;
+        this.department = department;
+        setSalary(salary);
+    }
+
+    // getter和setter
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getDepartment() {
+        return department;
+    }
+
+    public void setDepartment(String department) {
+        this.department = department;
+    }
+
+    public double getSalary() {
+        return salary;
+    }
+
+    public void setSalary(double salary) {
+        if (salary >= 2000) {
+            this.salary = salary;
+        } else {
+            System.out.println("工资不能低于2000！");
+        }
+    }
+
+    // 涨薪方法
+    public void raiseSalary(double percent) {
+        double newSalary = salary * (1 + percent / 100);
+        setSalary(newSalary);
+    }
+}
+
+// 测试类
+class TestEmployee {
+    public static void main(String[] args) {
+        Employee emp1 = new Employee("1001", "张三", "技术部", 5000);
+        Employee emp2 = new Employee("1002", "李四", "销售部", 3000);
+
+        System.out.println("=== 初始信息 ===");
+        System.out.println(emp1.getName() + " - " + emp1.getDepartment() + " - 工资：" + emp1.getSalary());
+        System.out.println(emp2.getName() + " - " + emp2.getDepartment() + " - 工资：" + emp2.getSalary());
+
+        System.out.println("\n=== 涨薪后 ===");
+        emp1.raiseSalary(10);
+        System.out.println(emp1.getName() + "涨薪后工资：" + emp1.getSalary());
+
+        System.out.println("\n=== 修改部门 ===");
+        emp2.setDepartment("市场部");
+        System.out.println(emp2.getName() + "新部门：" + emp2.getDepartment());
+
+        System.out.println("\n=== 测试非法工资 ===");
+        emp2.setSalary(1500);
+    }
+}
+
+

w4/Circle.java

@@ -0,0 +1,12 @@
+public class Circle extends Shape {
+    private double radius;
+
+    public Circle(double radius) {
+        this.radius = radius;
+    }
+
+    @Override
+    public double getArea() {
+        return Math.PI * radius * radius;
+    }
+}

w4/Main.java

@@ -0,0 +1,11 @@
+public class Main {
+    public static void main(String[] args) {
+        Shape circle = new Circle(5);
+        Shape rectangle = new Rectangle(4, 6);
+        Shape triangle = new Triangle(3, 4, 5);
+
+        ShapeUtil.printArea(circle);
+        ShapeUtil.printArea(rectangle);
+        ShapeUtil.printArea(triangle);
+    }
+}

w4/Rectangle.java

@@ -0,0 +1,13 @@
+public class Rectangle extends Shape {
+    private double width, height;
+
+    public Rectangle(double width, double height) {
+        this.width = width;
+        this.height = height;
+    }
+
+    @Override
+    public double getArea() {
+        return width * height;
+    }
+}

w4/Shape.java

@@ -0,0 +1,3 @@
+public abstract class Shape {
+    public abstract double getArea();
+}

w4/ShapeUtil.java

@@ -0,0 +1,5 @@
+public class ShapeUtil {
+    public static void printArea(Shape shape) {
+        System.out.println("面积为: " + shape.getArea());
+    }
+}

w4/Triangle.java

@@ -0,0 +1,15 @@
+public class Triangle extends Shape {
+    private double a, b, c;
+
+    public Triangle(double a, double b, double c) {
+        this.a = a;
+        this.b = b;
+        this.c = c;
+    }
+
+    @Override
+    public double getArea() {
+        double s = (a + b + c) / 2;
+        return Math.sqrt(s * (s - a) * (s - b) * (s - c));
+    }
+}

w5/A_Circlew5.java

@@ -0,0 +1,6 @@
+public class A_Circlew5 extends A_Graphic {
+    @Override
+    public void draw() {
+        System.out.println("绘制一个圆形");
+    }
+}

w5/A_Graphic.java

@@ -0,0 +1,5 @@
+public class A_Graphic {
+    public void draw() {
+        System.out.println("绘制一个图形");
+    }
+}

w5/A_Main1.java

@@ -0,0 +1,15 @@
+public class A_Main1 {public static void drawGraphic(A_Graphic g) {
+    g.draw();
+}
+
+    public static void main(String[] args) {
+        A_Graphic graphic = new A_Graphic();
+        A_Circlew5 circle = new A_Circlew5();
+        A_Rectanglew5 rectangle = new A_Rectanglew5();
+
+        drawGraphic(graphic);
+        drawGraphic(circle);
+        drawGraphic(rectangle);
+    }
+}
+

w5/A_Rectanglew5.java

@@ -0,0 +1,6 @@
+public class A_Rectanglew5 extends A_Graphic {
+    @Override
+    public void draw() {
+        System.out.println("绘制一个矩形");
+    }
+}

w5/Bike.java

@@ -0,0 +1,6 @@
+public class Bike extends Vehicle {
+    @Override
+    public void run() {
+        System.out.println("自行车在自行车道上骑行");
+    }
+}

w5/Car.java

@@ -0,0 +1,6 @@
+public class Car extends Vehicle {
+    @Override
+    public void run() {
+        System.out.println("汽车在公路上行驶");
+    }
+}

w5/Main2.java

@@ -0,0 +1,12 @@
+public class Main2 {
+    public static void main(String[] args) {
+        Vehicle[] vehicles = new Vehicle[3];
+        vehicles[0] = new Car();
+        vehicles[1] = new Bike();
+        vehicles[2] = new Truck();
+
+        for (Vehicle v : vehicles) {
+            v.run();
+        }
+    }
+}

w5/Truck.java

@@ -0,0 +1,6 @@
+public class Truck extends Vehicle {
+    @Override
+    public void run() {
+        System.out.println("卡车在高速上运输货物");
+    }
+}

w5/Vehicle.java

@@ -0,0 +1,3 @@
+public abstract class Vehicle {
+    public abstract void run();
+}

w6/Animal.java

@@ -0,0 +1,32 @@
+// 抽象类 Animal
+abstract class Animal {
+    public abstract void makeSound();
+}
+
+// 接口 Swimmable
+interface Swimmable {
+    void swim();
+}
+
+// Dog 类继承 Animal 并实现 Swimmable
+class Dog extends Animal implements Swimmable {
+    @Override
+    public void makeSound() {
+        System.out.println("狗叫：汪汪汪！");
+    }
+
+    @Override
+    public void swim() {
+        System.out.println("狗会游泳，正在狗刨...");
+    }
+}
+
+// Cat 类继承 Animal，不实现 Swimmable
+class Cat extends Animal {
+    @Override
+    public void makeSound() {
+        System.out.println("猫叫：喵喵喵~");
+    }
+}
+
+

w6/AnimalTest.java

@@ -0,0 +1,21 @@
+// 测试类
+public class AnimalTest {
+    public static void main(String[] args) {
+        // 多态调用
+        Animal dog = new Dog();
+        Animal cat = new Cat();
+
+        dog.makeSound();
+        cat.makeSound();
+
+        // 判断 Dog 是否实现了 Swimmable 接口并调用
+        if (dog instanceof Swimmable) {
+            ((Swimmable) dog).swim();
+        }
+
+        // Cat 不能游泳
+        if (!(cat instanceof Swimmable)) {
+            System.out.println("猫不会游泳");
+        }
+    }
+}

w7/ScoreCalculator.java

@@ -0,0 +1,71 @@
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+public class ScoreCalculator {
+
+    public static void main(String[] args) {
+        String fileName = "java/w7/ scores";
+        double average = calculateAverageScore(fileName);
+
+        if (!Double.isNaN(average)) {
+            System.out.printf("平均分: %.2f%n", average);
+        }
+    }
+
+    /**
+     * 计算成绩文件的平均分
+     * @param fileName 文件名
+     * @return 平均分，如果出错返回 NaN
+     */
+    public static double calculateAverageScore(String fileName) {
+        int sum = 0;
+        int count = 0;
+
+        // 1. 检查文件是否存在
+        Path filePath = Paths.get(fileName);
+        if (!Files.exists(filePath)) {
+            System.err.println("错误: 文件 '" + fileName + "' 不存在！");
+            return Double.NaN;
+        }
+
+        // 2. 使用 try-with-resources 确保流自动关闭
+        try (BufferedReader br = new BufferedReader(new FileReader(fileName))) {
+            String line;
+
+            while ((line = br.readLine()) != null) {
+                // 跳过空行
+                if (line.trim().isEmpty()) {
+                    continue;
+                }
+
+                try {
+                    int score = Integer.parseInt(line.trim());
+                    sum += score;
+                    count++;
+                } catch (NumberFormatException e) {
+                    // 数字格式错误，记录错误但继续处理其他行
+                    System.err.println("警告: 无效的数据格式 '" + line + "'，已跳过此条记录");
+                }
+            }
+
+            // 检查是否有有效数据
+            if (count == 0) {
+                System.err.println("错误: 文件中没有有效的成绩数据！");
+                return Double.NaN;
+            }
+
+            return (double) sum / count;
+
+        } catch (IOException e) {
+            // 读取错误
+            System.err.println("错误: 读取文件 '" + fileName + "' 时发生异常！");
+            System.err.println("详细信息: " + e.getMessage());
+            return Double.NaN;
+        }
+        // 无需显式 close()，try-with-resources 会自动处理
+    }
+}

w7/scores

@@ -0,0 +1,5 @@
+85
+90
+78
+92
+88

w8/AI

@@ -0,0 +1,5 @@
+3.AI协同学习：泛型擦除后如何通过反射获取泛型信息？
+答案：擦除后，运行时拿不到类型参数k、V的实际值。但可以通过反射获取字段、方法参数/返回值上声明的泛型信息（如List<String>中的String)
+4.思考题：为什么Java泛型不支持基本类型？
+根本原因:Java泛型通过类型擦除实现，编译后所有泛型参数都被替换为Object（或上界类型）。而基本类型(int、double等）不继承自 object，无法直接放入0bject容器中。
+解法：使用对应的包装类（Integer Double）.依赖自动装箱/拆箱

w8/Cache.java

@@ -0,0 +1,26 @@
+import java.util.HashMap;
+import java.util.Map;
+
+public class Cache<K, V> {
+    private final Map<K, V> cache = new HashMap<>();
+
+    public void put(K key, V value) {
+        cache.put(key, value);
+    }
+
+    public V get(K key) {
+        return cache.get(key);
+    }
+
+    public boolean containsKey(K key) {
+        return cache.containsKey(key);
+    }
+
+    public int size() {
+        return cache.size();
+    }
+
+    public void clear() {
+        cache.clear();
+    }
+}

w8/Pair.java

@@ -0,0 +1,23 @@
+public class Pair<K, V> {
+    private K key;
+    private V value;
+
+    public Pair(K key, V value) {
+        this.key = key;
+        this.value = value;
+    }
+
+    public K getKey() { return key; }
+    public V getValue() { return value; }
+
+    // 交换后 key/value 类型可能变化，所以返回新的 Pair<V, K>
+    public Pair<V, K> swap() {
+        return new Pair<>(this.value, this.key);
+    }
+
+    public static void main(String[] args) {
+        Pair<String, Integer> p = new Pair<>("Age", 25);
+        Pair<Integer, String> swapped = p.swap();
+        System.out.println(swapped.getKey() + "=" + swapped.getValue()); // 25=Age
+    }
+}

w9/AI

@@ -0,0 +1,14 @@
+3. AI 架构审计（MVC 三层检查）
+发送给 AI 的指令模板：
+作为 Java 架构审计师，请检查我的 MVC 三层划分是否存在越权行为？
+
+我的项目结构：
+· Model：Article（数据实体）、Storage（数据存取）
+· View：ConsoleView（控制台输入输出）
+· Controller：CommandController（解析命令、调用 Model）
+
+请从以下角度审计：
+1. View 是否直接调用了 Model 层？（越权）
+2. Controller 是否做了 View 的工作？（职责混淆）
+3. Model 层是否包含了业务逻辑而非仅仅是数据存取？
+4. 各层之间的依赖方向是否正确？（View → Controller → Model）

w9/Article.java

@@ -0,0 +1,27 @@
+import java.util.Date;
+
+public class Article {
+    private String title;
+    private String content;
+    private String url;
+    private String author;        // 新增
+    private Date publishDate;     // 新增
+
+    // 构造器
+    public Article(String title, String content, String url, String author, Date publishDate) {
+        this.title = title;
+        this.content = content;
+        this.url = url;
+        this.author = author;
+        this.publishDate = publishDate;
+    }
+
+    // Getters and Setters
+    public String getAuthor() { return author; }
+    public void setAuthor(String author) { this.author = author; }
+
+    public Date getPublishDate() { return publishDate; }
+    public void setPublishDate(Date publishDate) { this.publishDate = publishDate; }
+
+    // 原有字段的 getter/setter...
+}

w9/Controller.java

@@ -0,0 +1,8 @@
+public class Controller {
+    private HistoryCommand history = new HistoryCommand();
+
+    public void executeCommand(String command) {
+        history.addCommand(command);  // 记录每一条命令
+        // ... 原有命令处理逻辑
+    }
+}

w9/HistoryCommand.java

@@ -0,0 +1,28 @@
+import java.util.ArrayList;
+import java.util.List;
+
+public class HistoryCommand {
+    private List<String> commandHistory = new ArrayList<>();
+
+    // 添加命令到历史
+    public void addCommand(String command) {
+        commandHistory.add(command);
+    }
+
+    // 获取所有历史命令
+    public List<String> getHistory() {
+        return new ArrayList<>(commandHistory); // 返回副本，保护原数据
+    }
+
+    // 打印历史记录
+    public void printHistory() {
+        for (int i = 0; i < commandHistory.size(); i++) {
+            System.out.println((i + 1) + ". " + commandHistory.get(i));
+        }
+    }
+
+    // 清空历史
+    public void clear() {
+        commandHistory.clear();
+    }
+}