第十一次实验课代码

添加C08~C011

.idea/.gitignore

@@ -0,0 +1,8 @@
+# 默认忽略的文件
+/shelf/
+/workspace.xml
+# 基于编辑器的 HTTP 客户端请求
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

.idea/MarsCodeWorkspaceAppSettings.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="com.codeverse.userSettings.MarscodeWorkspaceAppSettingsState">
+    <option name="chatAppRouterInfo" value="builder/690c5888a0e96eb419edfb1d" />
+    <option name="progress" value="1.0" />
+  </component>
+</project>

.idea/misc.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="21" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

.idea/modules.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/C02 Expresion/C02 Expresion.iml" filepath="$PROJECT_DIR$/C02 Expresion/C02 Expresion.iml" />
+      <module fileurl="file://$PROJECT_DIR$/C03 ControlFlow/C03 ControlFlow.iml" filepath="$PROJECT_DIR$/C03 ControlFlow/C03 ControlFlow.iml" />
+      <module fileurl="file://$PROJECT_DIR$/C04 ClassDefine/C04 ClassDefine.iml" filepath="$PROJECT_DIR$/C04 ClassDefine/C04 ClassDefine.iml" />
+      <module fileurl="file://$PROJECT_DIR$/C05 Extends/C05 Extends.iml" filepath="$PROJECT_DIR$/C05 Extends/C05 Extends.iml" />
+      <module fileurl="file://$PROJECT_DIR$/C06 Polymorphism/C06 Polymorphism.iml" filepath="$PROJECT_DIR$/C06 Polymorphism/C06 Polymorphism.iml" />
+      <module fileurl="file://$PROJECT_DIR$/C07 StaticAndEnum/C07 StaticAndEnum.iml" filepath="$PROJECT_DIR$/C07 StaticAndEnum/C07 StaticAndEnum.iml" />
+      <module fileurl="file://$PROJECT_DIR$/C08-SnackGame/C08-SnackGame.iml" filepath="$PROJECT_DIR$/C08-SnackGame/C08-SnackGame.iml" />
+      <module fileurl="file://$PROJECT_DIR$/C09-Collection/C09-Collection.iml" filepath="$PROJECT_DIR$/C09-Collection/C09-Collection.iml" />
+      <module fileurl="file://$PROJECT_DIR$/C10-Swing/C10-Swing.iml" filepath="$PROJECT_DIR$/C10-Swing/C10-Swing.iml" />
+      <module fileurl="file://$PROJECT_DIR$/C11-Swing/C11-Swing.iml" filepath="$PROJECT_DIR$/C11-Swing/C11-Swing.iml" />
+      <module fileurl="file://$PROJECT_DIR$/ClassOfJava.iml" filepath="$PROJECT_DIR$/ClassOfJava.iml" />
+    </modules>
+  </component>
+</project>

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>

C02 Expresion/src/NumberProcessor.java

@@ -5,7 +5,7 @@ public class NumberProcessor {
         Scanner sc = new Scanner(System.in);
         System.out.println("请输入一个三位或四位整数");
         int number = sc.nextInt();
-        if(number%100>0 && number%100<10){
+        if(number%100>0 && number%100<99){
             while(number>0){
                 System.out.println(number%10);
                 number = number / 10;

C03 ControlFlow/C03 ControlFlow.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

C03 ControlFlow/src/EncryptDemo.java

@@ -0,0 +1,26 @@
+import java.util.Scanner;
+import java.util.Arrays;
+
+public class EncryptDemo {
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        String str = sc.nextLine();
+
+        byte key = sc.nextByte();
+        char[] enc= new char[str.length()];
+        for(int i=0;i<str.length();i++)
+            enc[i] =(char)(str.charAt(i) ^ key);
+
+//        for(char c:enc)
+//            System.out.print(c);
+        System.out.println("密文："+Arrays.toString(enc));
+
+        char[] dec= new char[enc.length];
+        for(int i=0;i<str.length();i++)
+            dec[i] =(char)(enc[i] ^ key);
+
+//        for(char c:dec)
+//            System.out.print(c);
+        System.out.println("明文："+Arrays.toString(dec));
+    }
+}

C03 ControlFlow/src/NumberCounter.java

@@ -0,0 +1,16 @@
+import java.util.Scanner;
+
+public class NumberCounter {
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        long num = sc.nextLong();
+        int[] hash = new int[10];
+        while(num>0){
+            hash[(int)(num%10)]++;
+            num/=10;
+        }
+        for(int i : hash)
+            System.out.print(i+" ");
+        System.out.println();
+    }
+}

C04 ClassDefine/C04 ClassDefine.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

C04 ClassDefine/src/Hero.java

@@ -0,0 +1,68 @@
+public class Hero {
+    String name;//名称
+    char sex;//性别
+    int cost;//费用
+    int health;//生命值
+    int magic;//魔法值
+    int attack;//攻击力
+    int level;//等级(1-3) 1
+    int physicalResist;//物理抗性
+    int magicResist;//魔法抗性
+
+    //升级行为方法
+    public void levelUp(){
+        if (level < 3) {
+            this.level++;
+            this.health = (int) (this.health * 1.5);
+            this.attack = (int) (this.attack * 1.5);
+            System.out.format("%s升级到%d级\n", this.name, this.level);
+        }
+
+    }
+
+    //攻击行为方法
+    public void attack(Hero target){
+        if(this.health>0) {
+            int damage = calculateDamage(attack, target.physicalResist);
+            System.out.format("%s攻击了%s，造成了%d点伤害\n", name, target.name, attack);
+            //必须为有效伤害
+            if (damage > 0)
+                target.takeDamage(damage);
+            else
+                System.out.println("攻击失败");
+        }
+        else
+            System.out.println(name+"已死亡，攻击失败");
+    }
+
+    //受到伤害行为方法
+    public void takeDamage(int damage){
+        health -= damage;
+        health=Math.max(health,0);
+        if(health>0)
+            System.out.format("%s受到了%d点伤害，剩余生命值%d\n",name,damage,health);
+        else
+            System.out.format("%s受到了%d点伤害，剩余生命值为0，已被击败\n",name,damage);
+    }
+
+    private int calculateDamage(int damage,int resist){
+        return (int)(damage*1.0/(1+resist*1.0/100));
+    }
+
+    //无参构造器
+    public Hero() {
+        this.level=1;
+    }
+    //有参构造器
+    public Hero(String name, char sex, int cost, int health, int magic, int attack, int physicalResist, int magicResist) {
+        this();//在有参构造器中调用无参构造器
+        this.name = name;
+        this.sex = sex;
+        this.cost = cost;
+        this.health = health;
+        this.magic = magic;
+        this.attack = attack;
+        this.physicalResist = physicalResist;
+        this.magicResist = magicResist;
+    }
+}

C04 ClassDefine/src/Test.java

@@ -0,0 +1,38 @@
+public class Test {
+    public static void main(String[] args) {
+        //1.无参构造器，逐一赋值
+        Hero almin = new Hero();
+        almin.name="almin";
+        almin.sex='m';
+        almin.cost=1;
+        almin.health=1000;
+        almin.magic=100;
+        almin.attack=60;
+        almin.physicalResist=50;
+        almin.magicResist=50;
+        System.out.println(almin.name);
+        System.out.println(almin.health);
+        System.out.println(almin.level);
+        //2.有参构造器
+        Hero alen = new Hero("alen",'m',1,600,100,60,100,50);
+        System.out.println(alen.name);
+        System.out.println(alen.health);
+        System.out.println(alen.level);
+
+
+        //3.攻击
+        //almin.attack(alen);
+        System.out.println("游戏开始");
+        alen.levelUp();
+        int round = 0;
+        while(almin.health>0 && alen.health>0){
+            round++;
+            System.out.println("第"+round+"回合");
+            almin.attack(alen);
+            alen.attack(almin);
+            System.out.println("=====================");
+        }
+        System.out.format("%s获胜，%s失败",almin.health==0?alen.name:almin.name,
+                almin.health==0?almin.name:alen.name);
+    }
+}

C05 Extends/C05 Extends.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

C05 Extends/src/shape/Circle.java

@@ -0,0 +1,35 @@
+package shape;
+import java.awt.*;
+
+public class Circle extends Shape {
+    private int radius;
+
+    @Override
+    public double getArea(){
+        return Math.PI*radius*radius;
+    }
+
+    @Override
+    public double getPerimeter(){
+        return 2*Math.PI*radius;
+    }
+    @Override
+    public void draw(Graphics g) {
+        g.setColor(color);
+        // 绘制圆形
+        g.fillOval(x - radius, y - radius, radius * 2, radius * 2);
+
+        // 绘制信息
+        g.setColor(Color.BLACK);
+        g.drawString(String.format("面积: %.2f", getArea()), x + radius + 5, y);
+        g.drawString(String.format("周长: %.2f", getPerimeter()), x + radius + 5, y + 15);
+    }
+
+    public Circle(){
+        this(Color.RED,100,100,50);
+    }
+    public Circle(Color color,int x,int y,int radius){
+        super(color,x,y);
+        this.radius=radius;
+    }
+}

C05 Extends/src/shape/Rectangle.java

@@ -0,0 +1,14 @@
+package shape;
+import java.awt.*;
+
+public class Rectangle extends Shape {
+    private int width,height;
+    public Rectangle() {
+        super();
+    }
+     public Rectangle(Color color, int x, int y, int width, int height) {
+        super(color, x, y);
+        this.width = width;
+        this.height = height;
+    }
+}

C05 Extends/src/shape/Shape.java

@@ -0,0 +1,52 @@
+package shape;
+import java.awt.*;
+
+public class Shape {
+    protected Color color;
+    protected int x,y;
+
+    public void setColor(Color color) {
+        this.color = color;
+    }
+    public Color getColor() {
+        return color;
+    }
+    public double getArea(){
+        return x*y;
+    }
+
+    public void setX(int x){
+        this.x=x;
+    }
+    public int getX(){
+        return x;
+    }
+
+    public void setY(int y){
+        this.y=y;
+    }
+    public int getY(){
+        return y;
+    }
+
+    public double getPerimeter(){
+        return x*y;
+    }
+
+    public void move(int dx,int dy){
+        x += dx;
+        y += dy;
+    }
+
+    public void draw(Graphics g){
+        g.setColor(color);
+        g.fillRect(x,y,1,1);
+    }
+
+    Shape(){}
+    Shape(Color color,int x,int y){
+        this.color=color;
+        this.x=x;
+        this.y=y;
+    }
+}

C05 Extends/src/test/ShapeDrawerTest.java

@@ -0,0 +1,55 @@
+package test;
+
+import javax.swing.*;
+import java.awt.*;
+import shape.Circle;
+
+public class ShapeDrawerTest extends JFrame {
+    /*******请在下面添加**************/
+    // 【任务1】定义一个包含5个元素的圆形数组
+    Circle[] circles = new Circle[5];
+    /*******请在上面添加**************/
+
+    // 初始化图形
+    private void initShapes() {
+        /*******请在下面添加**************/
+        // 【任务2】采用无参构造添加一个红色，坐标为(100,100)，半径为50的圆形，并加入对应数组
+        circles[0] = new Circle();
+        // 【任务3】采用有参构造添加一个黄色，坐标为(150,300)，半径为70的圆形，并加入对应数组
+        circles[1] = new Circle(Color.YELLOW, 150, 300, 70);
+        circles[2] = new Circle();
+        circles[3] = new Circle();
+        circles[4] = new Circle();
+        /*******请在上面添加**************/
+    }
+
+    // 重写绘制方法
+    @Override
+    public void paint(Graphics g) {
+        super.paint(g);
+        /*******请在下面添加**************/
+        // 绘制所有图形
+        // 【任务4】采用增强型for循环绘制所有图形
+        for (Circle circle : circles) {
+            circle.draw(g);
+        }
+        /*******请在上面添加**************/
+        // 绘制标题
+        g.setColor(Color.BLACK);
+        g.drawString("Java继承图形绘制示例", 300, 30);
+    }
+    public ShapeDrawerTest() {
+        // 初始化窗口
+        setTitle("图形绘制程序");
+        setSize(800, 600);
+        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        setLocationRelativeTo(null);
+
+        // 创建各种图形对象
+        initShapes();
+    }
+    public static void main(String[] args) {
+        new ShapeDrawerTest().setVisible(true);
+    }
+}
+

C06 Polymorphism/C06 Polymorphism.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

C06 Polymorphism/src/shape/Circle.java

@@ -0,0 +1,49 @@
+package shape;
+import java.awt.*;
+
+public class Circle extends Shape {
+    private int radius;
+
+    public void setRadius(int r) {
+        radius = r;
+    }
+
+    public int getRadius() {
+        return radius;
+    }
+    @Override
+    public double getArea(){
+        return Math.PI*radius*radius;
+    }
+
+    @Override
+    public double getPerimeter(){
+        return 2*Math.PI*radius;
+    }
+    @Override
+    public void draw(Graphics g) {
+        g.setColor(color);
+        // 绘制圆形
+        g.fillOval(x - radius, y - radius, radius * 2, radius * 2);
+
+        // 绘制信息
+        g.setColor(Color.BLACK);
+        g.drawString(String.format("面积: %.2f", getArea()), x + radius + 5, y);
+        g.drawString(String.format("周长: %.2f", getPerimeter()), x + radius + 5, y + 15);
+    }
+    public void drawCenterMark(Graphics g) {
+        g.setColor(Color.BLACK);
+        g.drawLine(x-5,y,x+5,y);
+        g.drawLine(x,y-5,x,y+5);
+        g.drawString("O", x+5, y+5);
+    }
+
+    public Circle(){
+        super();
+    }
+    public Circle(Color color,int x,int y,int radius){
+        super(color,x,y);
+        this.radius=radius;
+    }
+
+}

C06 Polymorphism/src/shape/Rectangle.java

@@ -0,0 +1,56 @@
+package shape;
+import java.awt.*;
+
+public class Rectangle extends Shape {
+    private int width,height;
+
+    public void setWidth(int width) {
+        this.width = width;
+    }
+
+    public void setHeight(int height) {
+        this.height = height;
+    }
+
+    public int getHeight() {
+        return height;
+    }
+
+    public int getWidth() {
+        return width;
+    }
+
+    @Override
+    public double getArea() {
+        return width*height;
+    }
+     @Override
+    public double getPerimeter() {
+        return 2*(width+height);
+    }
+    @Override
+    public void draw(Graphics g) {
+        g.setColor(color);
+        g.fillRect(x, y, width, height);
+        // 绘制信息
+        g.setColor(Color.BLACK);
+        g.drawString(String.format("面积: %.2f", getArea()), x + width + 5, y);
+        g.drawString(String.format("周长: %.2f", getPerimeter()), x + width + 5, y + 15);
+    }
+
+    public void drawDiagonals(Graphics g) {
+        g.setColor(Color.BLACK);
+        g.drawLine(x, y, x+width, y+height);
+        g.drawLine(x, y+height, x+width, y);
+    }
+
+    public Rectangle() {
+        super();
+    }
+
+    public Rectangle(Color color, int x, int y, int width, int height) {
+        super(color, x, y);
+        this.width = width;
+        this.height = height;
+    }
+}

C06 Polymorphism/src/shape/Shape.java

@@ -0,0 +1,48 @@
+package shape;
+import java.awt.*;
+
+public abstract class Shape {
+    protected Color color;
+    protected int x,y;
+
+    public void setColor(Color color) {
+        this.color = color;
+    }
+    public Color getColor() {
+        return color;
+    }
+    public abstract double getArea();
+
+    public void setX(int x){
+        this.x=x;
+    }
+    public int getX(){
+        return x;
+    }
+
+    public void setY(int y){
+        this.y=y;
+    }
+    public int getY(){
+        return y;
+    }
+
+    public abstract double getPerimeter();
+
+    public void move(int dx,int dy){
+        x += dx;
+        y += dy;
+    }
+
+    public void draw(Graphics g){
+        g.setColor(color);
+        g.fillRect(x,y,1,1);
+    }
+
+    Shape(){}
+    Shape(Color color,int x,int y){
+        this.color=color;
+        this.x=x;
+        this.y=y;
+    }
+}

C06 Polymorphism/src/test/ShapeDrawerTest.java

@@ -0,0 +1,77 @@
+package test;
+
+import shape.Circle;
+import shape.Rectangle;
+import javax.swing.*;
+import java.awt.*;
+
+public class ShapeDrawerTest extends JFrame {
+    /*******请在下面添加**************/
+    // 【任务1】定义一个包含5个元素的圆形数组
+    Circle[] circles = new Circle[5];
+    Rectangle[] rectangles = new Rectangle[2];
+    private shape.Shape[] shapes = new shape.Shape[4];
+
+    /*******请在上面添加**************/
+
+    // 初始化图形
+    private void initShapes() {
+        /*******请在下面添加**************/
+        // 【任务2】采用无参构造添加一个红色，坐标为(100,100)，半径为50的圆形，并加入对应数组
+        shapes[0] = new Circle();
+        ((Circle)shapes[0]).setX(100);
+        ((Circle)shapes[0]).setY(100);
+        ((Circle)shapes[0]).setRadius(50);
+        ((Circle)shapes[0]).setColor(Color.RED);
+        // 【任务3】采用有参构造添加一个黄色，坐标为(150,300)，半径为70的圆形，并加入对应数组
+        shapes[1] = new Circle(Color.YELLOW, 150, 300, 70);
+        // 【任务4】采用无参构造添加一个绿色，坐标为(250,80)，宽为100，高为80的矩形，并加入对应数组
+        shapes[2] = new Rectangle();
+        ((Rectangle)shapes[2]).setX(250);
+        ((Rectangle)shapes[2]).setY(80);
+        ((Rectangle)shapes[2]).setWidth(100);
+        ((Rectangle)shapes[2]).setHeight(80);
+        ((Rectangle)shapes[2]).setColor(Color.GREEN);
+        // 【任务5】采用有参构造添加一个粉色，坐标为(300,300)，宽为120，高为60的矩形
+        shapes[3] = new Rectangle(Color.PINK, 300, 300, 120, 60);
+        // 【任务6】下移动第二个矩形50个单位
+        ((Rectangle)shapes[3]).setY(this.getY()-50);
+        /*******请在上面添加**************/
+    }
+
+    // 重写绘制方法
+    @Override
+    public void paint(Graphics g) {
+        super.paint(g);
+        /*******请在下面添加**************/
+        // 绘制所有图形
+        // 【任务4】采用增强型for循环绘制所有图形
+        for (shape.Shape shape : shapes) {
+            shape.draw(g);
+            if (shape instanceof Circle) {
+                ((Circle)shape).drawCenterMark(g);
+            }
+            if (shape instanceof Rectangle) {
+                ((Rectangle)shape).drawDiagonals(g);
+            }
+        }
+        /*******请在上面添加**************/
+        // 绘制标题
+        g.setColor(Color.BLACK);
+        g.drawString("Java继承图形绘制示例", 300, 50);
+    }
+    public ShapeDrawerTest() {
+        // 初始化窗口
+        setTitle("图形绘制程序");
+        setSize(800, 600);
+        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        setLocationRelativeTo(null);
+
+        // 创建各种图形对象
+        initShapes();
+    }
+    public static void main(String[] args) {
+        new ShapeDrawerTest().setVisible(true);
+    }
+}
+

C07 StaticAndEnum/C07 StaticAndEnum.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

C07 StaticAndEnum/src/CaptchaUtils.java

@@ -0,0 +1,52 @@
+import java.util.*;
+
+/**
+ * 验证码工具类
+ */
+public class CaptchaUtils {  // final修饰类：不能被继承
+    // 【任务1】静态常量：字符集（全局固定）
+    static final String CHAR_SET="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+
+    // 【任务2】静态常量：验证码长度（全局固定）
+    static final int CAPTCHA_LENGTH=4;
+
+    // 【任务3】私有构造方法：禁止创建实例（工具类无需实例化）
+    private CaptchaUtils(){
+    }
+
+    /**
+     * 【任务4】
+     * 静态方法：generateCaptcha 生成随机验证码
+     * @return String 返回生成的随机验证码字符串
+     */
+    public static String generateCaptcha(){
+        Random random = new Random();
+        //生成随机验证码
+        StringBuilder sb = new StringBuilder();
+        for(int i=0;i<CAPTCHA_LENGTH;i++){
+            //生成随机数索引
+            int index = random.nextInt(CHAR_SET.length());
+            //根据索引获取随机字符
+            sb.append(CHAR_SET.charAt(index));
+        }
+        return sb.toString();
+    }
+    /**
+     * 【任务5】
+     * 静态方法：verifyCaptcha 验证验证码 
+     * @param inputCaptcha 用户输入的验证码
+     * @param systemCaptcha 系统生成的验证码
+     * @return boolean 验证结果，true表示验证通过，false表示验证失败
+     */
+    public static boolean verifyCaptcha(String inputCaptcha,String systemCaptcha){
+        return inputCaptcha.equalsIgnoreCase(systemCaptcha);
+    }
+
+    public static void main(String[] args) {
+        for(int i=0;i<10;i++)
+            System.out.println(generateCaptcha());
+
+        System.out.println(CaptchaUtils.verifyCaptcha(generateCaptcha(), generateCaptcha()));
+    }
+
+}

C07 StaticAndEnum/src/LoginStatus.java

@@ -0,0 +1,72 @@
+ /**
+  * 登录状态枚举类
+  * 用final保证状态信息不可变，用static提供工具方法
+  */
+ public enum LoginStatus {
+        // 【任务3】枚举实例：状态码和描述
+        // 成功登录
+        SUCCESS(200,"登录成功"),
+        // 密码错误
+        PASSWORD_ERROR(901,"密码错误"),
+        // 验证码错误
+        CAPTCHA_ERROR(902,"验证码错误"),
+        // 用户不存在
+        USER_NOT_FOUND(903,"用户不存在");
+
+
+
+        // 【任务1】定义 final修饰的属性：确保状态信息不可修改
+        private final int code;
+        private final String msg;
+
+
+
+        /**
+         * 【任务2】
+         * 构造函数，用于创建LoginStatus实例
+         * @param code 状态码
+         * @param msg 状态消息
+         */
+        LoginStatus(int code, String msg) {
+            this.code = code;
+            this.msg = msg;
+        }
+
+        // 静态方法：根据状态码获取枚举实例（static工具方法）
+        /**
+         * 【任务4】
+         * 静态方法： getByCode 根据状态码获取对应的登录状态枚举值
+         * @param code 状态码
+         * @return LoginStatus 对应的LoginStatus枚举值，如果找不到匹配的状态码则返回null
+         */
+        public static LoginStatus getByCode(int code){
+            for(LoginStatus status:values()){
+                if(status.code==code){
+                    return status;
+                }
+            }
+            return null;
+        }
+
+        // getter方法（final属性无需setter）
+        /**
+         * 【任务5】
+         * 方法： getCode 获取code值
+         *
+         * @return int code值
+         */
+        public int getCode() {
+            return code;
+        }
+
+        /**
+         * 任务【6】
+         * 方法： getMsg 获取消息内容
+         *
+         * @return String 返回当前对象的消息字符串
+         */
+        public String getMsg() {
+            return msg;
+        }
+ }
+

C07 StaticAndEnum/src/Test.java

@@ -0,0 +1,55 @@
+import java.util.Scanner;
+
+public class Test {
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        while (true) {
+            // 1. 生成验证码并展示
+            String systemCaptcha = CaptchaUtils.generateCaptcha();  // 调用静态方法
+            System.out.println("【登录】验证码：" + systemCaptcha);
+
+            // 2. 输入用户信息
+            System.out.print("请输入用户名：");
+            String username = scanner.nextLine();
+            System.out.print("请输入密码：");
+            String password = scanner.nextLine();
+            System.out.print("请输入验证码：");
+            String inputCaptcha = scanner.nextLine();
+
+            // 3. 验证登录（模拟业务逻辑）
+            LoginStatus status = checkLogin(username, password, inputCaptcha, systemCaptcha);
+
+            // 4. 【任务2】输出登录结果：打印具体的登录结果和状态码
+            System.out.println("\n登录结果："  + status.getMsg() + "（状态码："  + status.getCode() + "）");
+            System.out.println("===================================\n");
+        }
+    }
+
+     /**
+     * 【任务1】
+     * 静态方法： checkLogin 模拟登录验证逻辑
+     * @param String username 用户名
+     * @param String password 密码
+     * @param String inputCaptcha 用户输入的验证码
+     * @param String systemCaptcha 系统生成的验证码
+     * @return LoginStatus 登录状态枚举，表示验证结果
+     */
+
+     public static LoginStatus checkLogin(String username, String password, String inputCaptcha, String systemCaptcha) {
+        //admin 123456
+         // 1.校验验证码是否正确
+         if (!CaptchaUtils.verifyCaptcha(inputCaptcha, systemCaptcha)) {
+             return LoginStatus.CAPTCHA_ERROR;
+         }
+        // 2.校验用户名是否正确
+         if(!username.equals("admin")){
+             return LoginStatus.USER_NOT_FOUND;
+         }
+        // 3.校验密码是否正确
+        if(!password.equals("123456")){
+            return LoginStatus.PASSWORD_ERROR;
+        }
+        // 如果以上验证都通过，返回成功状态
+        return LoginStatus.SUCCESS;
+    }
+}

C08-SnackGame/C08-SnackGame.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

C08-SnackGame/src/game/Direction.java

@@ -0,0 +1,17 @@
+package game;
+
+import java.awt.*;
+
+public enum Direction {
+    UP(new Point(0,-1)),
+    DOWN(new Point(0,1)),
+    LEFT(new Point(-1,0)),
+    RIGHT(new Point(1,0));
+    private Point offset;
+    Direction(Point offset) {
+        this.offset = offset;
+    }
+    public static Point getOffset(Direction dir) {
+        return dir.offset;
+    }
+}

C08-SnackGame/src/game/Drawable.java

@@ -0,0 +1,7 @@
+package game;
+
+import java.awt.*;
+
+public interface Drawable {
+    void draw(Graphics g);
+}

C08-SnackGame/src/game/Food.java

@@ -0,0 +1,38 @@
+package game;
+
+import java.awt.*;
+import java.util.Random;
+
+public class Food extends GameElement{
+    private  static Random randeom = new Random();
+    public Food(int width,int height) {
+        super(0,0);
+        randomPosition(width,height);
+    }
+
+    /**
+     * 随机设置位置坐标
+     * @param width 可用宽度范围
+     * @param height 可用高度范围
+     */
+    public void randomPosition(int width, int height) {
+        //计算一排或一列最多的格子数
+        int maxX = width/SIZE;
+        int maxY = height/SIZE;
+        //将位置坐标映射到像素点
+        int x = randeom.nextInt(maxX)*SIZE;
+        int y = randeom.nextInt(maxY)*SIZE;
+        //设置坐标
+        position.setLocation(x,y);
+    }
+    @Override
+    public void draw(Graphics g) {
+        //红色填充，黑色边框
+        g.setColor(Color.RED);
+        g.fillOval(position.x,position.y,SIZE,SIZE);
+
+        g.setColor(Color.BLACK);
+        g.drawOval(position.x,position.y,SIZE,SIZE);
+    }
+
+}

C08-SnackGame/src/game/GameElement.java

@@ -0,0 +1,15 @@
+package game;
+
+import java.awt.*;
+
+public abstract class GameElement {
+    protected Point position;
+    public static final int SIZE = 20;
+    protected GameElement(int x,int y) {
+        position = new Point(x,y);
+    }
+    public Point getPosition() {
+        return position;
+    }
+    public abstract void draw(Graphics g);
+}

C08-SnackGame/src/game/Movable.java

@@ -0,0 +1,5 @@
+package game;
+
+public interface Movable {
+    void move();
+}

C08-SnackGame/src/game/SnakeNode.java

@@ -0,0 +1,31 @@
+package game;
+
+import java.awt.*;
+
+public class SnakeNode extends GameElement implements Movable{
+    private Direction direction;
+    public SnakeNode(int x, int y, Direction direction) {
+        super(x, y);
+        this.direction = direction;
+    }
+    public void setDirection(Direction direction) {
+        this.direction = direction;
+    }
+
+    @Override
+    public void draw(Graphics g) {
+        //绿色填充，黑色边框
+        g.setColor(Color.GREEN);
+        g.fillRect(position.x, position.y, SIZE, SIZE);
+        // 绘制边框，让蛇身更清晰
+        g.setColor(Color.BLACK);
+        g.drawRect(position.x, position.y, SIZE, SIZE);
+    }
+
+    @Override
+    public void move() {
+        Point offset = Direction.getOffset(direction);
+        position.x += offset.x*SIZE;
+        position.y += offset.y*SIZE;
+    }
+}

C08-SnackGame/src/view/GamePanel.java

@@ -0,0 +1,85 @@
+package view;
+
+import game.Direction;
+import game.Food;
+import game.SnakeNode;
+
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.KeyAdapter;
+import java.awt.event.KeyEvent;
+
+
+public class GamePanel extends JPanel {
+    private static final int WIDTH = 600;
+    private static final int HEIGHT = 600;
+    private boolean isRunning;
+    // FIXME 蛇身体节点 未来需要改进
+    private SnakeNode[] snakeBody = new SnakeNode[3];
+    private final Food food;
+
+
+    public GamePanel() {
+        setPreferredSize(new Dimension(WIDTH, HEIGHT));
+        setBackground(Color.WHITE); // 背景色设为白色
+
+        // FIXME 初始化蛇 未来需要改进
+        snakeBody[0] = new SnakeNode(100, 100, Direction.RIGHT);
+        snakeBody[1] = new SnakeNode(80, 100, Direction.RIGHT);
+        snakeBody[2] = new SnakeNode(60, 100, Direction.RIGHT);
+
+        food = new Food(WIDTH, HEIGHT);
+
+
+        // 键盘监听
+        addKeyListener(new KeyAdapter() {
+            @Override
+            public void keyPressed(KeyEvent e) {
+                // TODO 按下按键后需要做处理
+            }
+        });
+        setFocusable(true); // 确保面板能接收键盘事件
+
+        // 游戏循环
+        new Thread(() -> {
+            while (isRunning) {
+                try {
+                    Thread.sleep(250);
+                    moveSnake(); // 移动蛇
+                    checkCollision(); // 检查碰撞
+                    repaint(); // 调用paintComponent重绘
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+            }
+        }).start();
+    }
+
+    private void moveSnake() {
+        // TODO
+    }
+
+    private void checkCollision() {
+        // TODO
+    }
+
+    private void gameOver() {
+        isRunning = false;
+        JOptionPane.showMessageDialog(this, "游戏结束！得分：");
+        System.exit(0);
+    }
+
+    // 核心改进：重写paintComponent而非paint，利用Swing双缓冲
+    @Override
+    protected void paintComponent(Graphics g) {
+        super.paintComponent(g); // 先绘制背景（双缓冲关键步骤）
+
+        // 绘制蛇
+        for (SnakeNode node : snakeBody) {
+            node.draw(g);
+        }
+
+        // 绘制食物
+        food.draw(g);
+    }
+}

C08-SnackGame/src/view/SnakeGame.java

@@ -0,0 +1,18 @@
+package view;
+
+import javax.swing.*;
+
+public class SnakeGame extends JFrame {
+    public SnakeGame() {
+        setTitle("贪吃蛇");
+        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        add(new GamePanel()); // 添加游戏面板
+        pack(); // 自动调整窗口大小以适应面板
+        setLocationRelativeTo(null); // 窗口居中
+        setVisible(true);
+    }
+
+    public static void main(String[] args) {
+        new SnakeGame();
+    }
+}

C09-Collection/C09-Collection.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

C09-Collection/src/Josephus.java

@@ -0,0 +1,24 @@
+import java.util.*;
+public class Josephus {
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        int n = sc.nextInt();
+        ArrayList<Integer> arr = new ArrayList<>();
+        for(int i=0;i<n;++i)
+            arr.add(i+1);
+        int cnt = 0;
+        int i=2;
+        while(arr.size()>2) {
+            Iterator<Integer> it = arr.iterator();
+            while(it.hasNext()) {
+                it.next();
+                cnt++;
+                if(cnt==3) {
+                    it.remove();
+                    cnt = 0;
+                }
+            }
+            System.out.println(arr);
+        }
+    }
+}

C09-Collection/src/game/Direction.java

@@ -0,0 +1,17 @@
+package game;
+
+import java.awt.*;
+
+public enum Direction {
+    UP(new Point(0,-1)),
+    DOWN(new Point(0,1)),
+    LEFT(new Point(-1,0)),
+    RIGHT(new Point(1,0));
+    private Point offset;
+    Direction(Point offset) {
+        this.offset = offset;
+    }
+    public static Point getOffset(Direction dir) {
+        return dir.offset;
+    }
+}

C09-Collection/src/game/Drawable.java

@@ -0,0 +1,7 @@
+package game;
+
+import java.awt.*;
+
+public interface Drawable {
+    void draw(Graphics g);
+}

C09-Collection/src/game/Food.java

@@ -0,0 +1,38 @@
+package game;
+
+import java.awt.*;
+import java.util.Random;
+
+public class Food extends GameElement{
+    private  static Random randeom = new Random();
+    public Food(int width,int height) {
+        super(0,0);
+        randomPosition(width,height);
+    }
+
+    /**
+     * 随机设置位置坐标
+     * @param width 可用宽度范围
+     * @param height 可用高度范围
+     */
+    public void randomPosition(int width, int height) {
+        //计算一排或一列最多的格子数
+        int maxX = width/SIZE;
+        int maxY = height/SIZE;
+        //将位置坐标映射到像素点
+        int x = randeom.nextInt(maxX)*SIZE;
+        int y = randeom.nextInt(maxY)*SIZE;
+        //设置坐标
+        position.setLocation(x,y);
+    }
+    @Override
+    public void draw(Graphics g) {
+        //红色填充，黑色边框
+        g.setColor(Color.RED);
+        g.fillOval(position.x,position.y,SIZE,SIZE);
+
+        g.setColor(Color.BLACK);
+        g.drawOval(position.x,position.y,SIZE,SIZE);
+    }
+
+}

C09-Collection/src/game/GameElement.java

@@ -0,0 +1,15 @@
+package game;
+
+import java.awt.*;
+
+public abstract class GameElement {
+    protected Point position;
+    public static final int SIZE = 20;
+    protected GameElement(int x,int y) {
+        position = new Point(x,y);
+    }
+    public Point getPosition() {
+        return position;
+    }
+    public abstract void draw(Graphics g);
+}

C09-Collection/src/game/Movable.java

@@ -0,0 +1,5 @@
+package game;
+
+public interface Movable {
+    void move();
+}

C09-Collection/src/game/SnakeNode.java

@@ -0,0 +1,34 @@
+package game;
+
+import java.awt.*;
+
+public class SnakeNode extends GameElement implements Movable{
+    private Direction direction;
+    public SnakeNode(int x, int y, Direction direction) {
+        super(x, y);
+        this.direction = direction;
+    }
+    public void setDirection(Direction direction) {
+        this.direction = direction;
+    }
+    public Direction getDirection() {
+        return direction;
+    }
+
+    @Override
+    public void draw(Graphics g) {
+        //绿色填充，黑色边框
+        g.setColor(Color.GREEN);
+        g.fillRect(position.x, position.y, SIZE, SIZE);
+        // 绘制边框，让蛇身更清晰
+        g.setColor(Color.BLACK);
+        g.drawRect(position.x, position.y, SIZE, SIZE);
+    }
+
+    @Override
+    public void move() {
+        Point offset = Direction.getOffset(direction);
+        position.x += offset.x*SIZE;
+        position.y += offset.y*SIZE;
+    }
+}

C09-Collection/src/view/GamePanel.java

@@ -0,0 +1,138 @@
+package view;
+
+import game.Direction;
+import game.Food;
+import game.GameElement;
+import game.SnakeNode;
+
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.KeyAdapter;
+import java.awt.event.KeyEvent;
+import java.util.*;
+
+
+public class GamePanel extends JPanel {
+    private static final int WIDTH = 600;
+    private static final int HEIGHT = 600;
+    private boolean isRunning;
+    private LinkedList<SnakeNode> snakeBody = new LinkedList<>();
+    private final Food food;
+    private int score = 0;
+
+
+    public GamePanel() {
+        setPreferredSize(new Dimension(WIDTH, HEIGHT));
+        setBackground(Color.WHITE); // 背景色设为白色
+        isRunning = true;
+        snakeBody.add(new SnakeNode(100, 100, Direction.RIGHT));
+        snakeBody.add(new SnakeNode(80, 100, Direction.RIGHT));
+        snakeBody.add(new SnakeNode(60, 100, Direction.RIGHT));
+
+        food = new Food(WIDTH, HEIGHT);
+
+
+        // 键盘监听
+        addKeyListener(new KeyAdapter() {
+            @Override
+            public void keyPressed(KeyEvent e) {
+                Direction currentDir = snakeBody.getFirst().getDirection();
+                switch(e.getKeyCode()){
+                    case KeyEvent.VK_UP: {
+                        if (currentDir != Direction.DOWN)
+                            snakeBody.getFirst().setDirection(Direction.UP);
+                        break;
+                    }
+                    case KeyEvent.VK_DOWN: {
+                        if (currentDir != Direction.UP)
+                            snakeBody.getFirst().setDirection(Direction.DOWN);
+                        break;
+                    }
+                    case KeyEvent.VK_LEFT: {
+                        if (currentDir != Direction.RIGHT)
+                            snakeBody.getFirst().setDirection(Direction.LEFT);
+                        break;
+                    }
+                    case KeyEvent.VK_RIGHT: {
+                        if (currentDir != Direction.LEFT)
+                            snakeBody.getFirst().setDirection(Direction.RIGHT);
+                        break;
+                    }
+                    default:
+                        System.out.println("位置案件");
+                }
+            }
+        });
+        setFocusable(true); // 确保面板能接收键盘事件
+
+        // 游戏循环
+        new Thread(() -> {
+            while (isRunning) {
+                try {
+                    Thread.sleep(50);
+                    moveSnake(); // 移动蛇
+                    checkCollision(); // 检查碰撞
+                    repaint(); // 调用paintComponent重绘
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+            }
+        }).start();
+    }
+
+    private void moveSnake() {
+        //获取蛇头
+        SnakeNode head = snakeBody.getFirst();
+        Point offset = Direction.getOffset(head.getDirection());
+        //(x',y')=(x,y)+offset*SIZE
+        int xNew= head.getPosition().x+offset.x*GameElement.SIZE;
+        int yNew= head.getPosition().y+offset.y*GameElement.SIZE;
+        //在新位置添加蛇头
+        snakeBody.addFirst(new SnakeNode(xNew, yNew, head.getDirection()));
+        //判断是否吃到食物
+        if(head.getPosition().equals(food.getPosition())){
+            //吃到食物
+            food.randomPosition(WIDTH, HEIGHT);
+            score++;
+        }
+        //删除蛇尾
+        else {
+            snakeBody.removeLast();
+        }
+    }
+
+    private void checkCollision() {
+        SnakeNode head = snakeBody.getFirst();
+        Point headPos = head.getPosition();
+        //撞墙
+        if(headPos.x<0||headPos.x>WIDTH||headPos.y<0||headPos.y>HEIGHT)
+            gameOver();
+        //撞自己
+        for(int i=1;i<snakeBody.size();i++){
+            if(snakeBody.get(i).getPosition().equals(headPos)){
+                gameOver();
+                break;
+            }
+        }
+    }
+
+    private void gameOver() {
+        isRunning = false;
+        JOptionPane.showMessageDialog(this, "游戏结束！得分："+score);
+        System.exit(0);
+    }
+
+    // 核心改进：重写paintComponent而非paint，利用Swing双缓冲
+    @Override
+    protected void paintComponent(Graphics g) {
+        super.paintComponent(g); // 先绘制背景（双缓冲关键步骤）
+
+        // 绘制蛇
+        for (SnakeNode node : snakeBody) {
+            node.draw(g);
+        }
+
+        // 绘制食物
+        food.draw(g);
+    }
+}

C09-Collection/src/view/SnakeGame.java

@@ -0,0 +1,18 @@
+package view;
+
+import javax.swing.*;
+
+public class SnakeGame extends JFrame {
+    public SnakeGame() {
+        setTitle("贪吃蛇");
+        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        add(new GamePanel()); // 添加游戏面板
+        pack(); // 自动调整窗口大小以适应面板
+        setLocationRelativeTo(null); // 窗口居中
+        setVisible(true);
+    }
+
+    public static void main(String[] args) {
+        new SnakeGame();
+    }
+}

C10-Swing/C10-Swing.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

C10-Swing/src/Main.java

@@ -0,0 +1,7 @@
+import view.LoginFrame;
+
+public class Main {
+    public static void main(String[] args) {
+        new LoginFrame();
+    }
+}

C10-Swing/src/utils/CaptchaUtils.java

@@ -0,0 +1,54 @@
+package utils;
+
+import java.util.Random;
+
+/**
+ * 验证码工具类
+ */
+public class CaptchaUtils {  // final修饰类：不能被继承
+    // 【任务1】静态常量：字符集（全局固定）
+    static final String CHAR_SET="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+
+    // 【任务2】静态常量：验证码长度（全局固定）
+    static final int CAPTCHA_LENGTH=4;
+
+    // 【任务3】私有构造方法：禁止创建实例（工具类无需实例化）
+    private CaptchaUtils(){
+    }
+
+    /**
+     * 【任务4】
+     * 静态方法：generateCaptcha 生成随机验证码
+     * @return String 返回生成的随机验证码字符串
+     */
+    public static String generateCaptcha(){
+        Random random = new Random();
+        //生成随机验证码
+        StringBuilder sb = new StringBuilder();
+        for(int i=0;i<CAPTCHA_LENGTH;i++){
+            //生成随机数索引
+            int index = random.nextInt(CHAR_SET.length());
+            //根据索引获取随机字符
+            sb.append(CHAR_SET.charAt(index));
+        }
+        return sb.toString();
+    }
+    /**
+     * 【任务5】
+     * 静态方法：verifyCaptcha 验证验证码 
+     * @param inputCaptcha 用户输入的验证码
+     * @param systemCaptcha 系统生成的验证码
+     * @return boolean 验证结果，true表示验证通过，false表示验证失败
+     */
+    public static boolean verifyCaptcha(String inputCaptcha,String systemCaptcha){
+        return inputCaptcha.equalsIgnoreCase(systemCaptcha);
+    }
+
+    public static void main(String[] args) {
+        for(int i=0;i<10;i++)
+            System.out.println(generateCaptcha());
+
+        System.out.println(CaptchaUtils.verifyCaptcha(generateCaptcha(), generateCaptcha()));
+    }
+
+}

C10-Swing/src/view/LoginFrame.java

@@ -0,0 +1,129 @@
+package view;
+
+import javax.swing.*;
+import java.awt.*;
+import utils.CaptchaUtils;
+
+public class LoginFrame extends JFrame {
+    private JPanel mainPanel;//中间层面板
+    private JTextField usernameTextField;//用户名输入框
+    private JPasswordField passwordField;//密码输入框
+    private JTextField captchaTextField;//验证码输入框
+    private JLabel captchaLabel;//验证码标签
+    private JButton loginButton;//登录按钮
+    private JButton registerButton;//注册按钮
+    public LoginFrame() {
+        initView();
+    }
+    //顶层容器
+    private void initView(){
+        //1.设置标题
+        setTitle("登录");
+        //2.设置点击关闭时的动作
+        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        //3.中间层容器
+        add(initPanel());
+        //4.不允许窗口改变大小
+        setResizable(false);
+        //5.自动调整窗口大小 居中显示
+        pack();//自动调整窗口大小
+        setLocationRelativeTo(null);//剧中
+        //6.显示窗口
+        setVisible(true);
+    }
+    private JPanel initPanel(){
+        mainPanel = new JPanel();
+        GridLayout gridLayout = new GridLayout(6,1,10,10);
+        mainPanel.setLayout(gridLayout);
+        //第1层 空白面板 占用
+        mainPanel.add(new JPanel());
+        //第2层 账号面板
+        mainPanel.add(initAcountPanel());
+        //第3层 密码面板
+        mainPanel.add(initPasswordPanel());
+        //第4层 验证码面板
+        mainPanel.add(initCaptchaPanel());
+        //第5层 按钮面板
+        mainPanel.add(initButtonPanel());
+        //第6层 空白面板 占用
+        return mainPanel;
+    }
+    /**
+     * 初始化账户信息面板
+     * @return 包含用户名输入框的面板组件
+     */
+    private JPanel initAcountPanel(){
+        JPanel panel = new JPanel();
+        panel.setLayout(new GridLayout(1,4,10,0));
+        JLabel label = new JLabel("用户名：");
+        //让label居右
+        label.setHorizontalAlignment(SwingConstants.RIGHT);
+        usernameTextField = new JTextField(15);
+        panel.add(label);
+        panel.add(usernameTextField);
+        panel.add(new JPanel());
+        return panel;
+    }
+
+    /**
+     * 初始化密码输入面板
+     * @return 包含密码标签和输入框的JPanel面板
+     */
+    private JPanel initPasswordPanel(){
+        JPanel panel = new JPanel();
+        // 设置网格布局，1行4列，水平间距10像素
+        panel.setLayout(new GridLayout(1,4,10,0));
+        JLabel label = new JLabel("密    码：");
+        // 设置标签文本右对齐
+        label.setHorizontalAlignment(SwingConstants.RIGHT);
+        passwordField = new JPasswordField(15);
+        panel.add(label);
+        panel.add(passwordField);
+        // 添加空白面板占位
+        panel.add(new JPanel());
+        return panel;
+    }
+
+
+    /**
+     * 初始化验证码面板
+     *
+     * @return 包含验证码相关组件的JPanel面板
+     */
+    private JPanel initCaptchaPanel(){
+        // 创建面板并设置网格布局
+        JPanel panel = new JPanel();
+        panel.setLayout(new GridLayout(1,4,10,0));
+
+        // 创建验证码标签
+        JLabel label = new JLabel("验证码：");
+        label.setHorizontalAlignment(SwingConstants.RIGHT);
+
+        // 创建验证码输入框和验证码显示标签
+        captchaTextField = new JTextField(4);
+        captchaLabel = new JLabel(CaptchaUtils.generateCaptcha());
+
+        // 将组件添加到面板中
+        panel.add(label);
+        panel.add(captchaTextField);
+        panel.add(captchaLabel);
+
+        return panel;
+    }
+
+
+    private JPanel initButtonPanel(){
+        JPanel panel = new JPanel();
+        panel.setLayout(new GridLayout(1,4,10,0));
+        loginButton = new JButton("登录");
+        registerButton = new JButton("注册");
+        panel.add(new JPanel());
+        panel.add(loginButton);
+        panel.add(registerButton);
+        panel.add(new JPanel());
+        return panel;
+    }
+
+
+
+}

C11-Swing/C11-Swing.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

C11-Swing/src/Main.java

@@ -0,0 +1,7 @@
+import view.LoginFrame;
+
+public class Main {
+    public static void main(String[] args) {
+        new LoginFrame();
+    }
+}

C11-Swing/src/common/LoginStatus.java

@@ -0,0 +1,74 @@
+package common;
+
+/**
+  * 登录状态枚举类
+  * 用final保证状态信息不可变，用static提供工具方法
+  */
+ public enum LoginStatus {
+        // 【任务3】枚举实例：状态码和描述
+        // 成功登录
+        SUCCESS(200,"登录成功"),
+        // 密码错误
+        PASSWORD_ERROR(901,"密码错误"),
+        // 验证码错误
+        CAPTCHA_ERROR(902,"验证码错误"),
+        // 用户不存在
+        USER_NOT_FOUND(903,"用户不存在");
+
+
+
+        // 【任务1】定义 final修饰的属性：确保状态信息不可修改
+        private final int code;
+        private final String msg;
+
+
+
+        /**
+         * 【任务2】
+         * 构造函数，用于创建LoginStatus实例
+         * @param code 状态码
+         * @param msg 状态消息
+         */
+        LoginStatus(int code, String msg) {
+            this.code = code;
+            this.msg = msg;
+        }
+
+        // 静态方法：根据状态码获取枚举实例（static工具方法）
+        /**
+         * 【任务4】
+         * 静态方法： getByCode 根据状态码获取对应的登录状态枚举值
+         * @param code 状态码
+         * @return LoginStatus 对应的LoginStatus枚举值，如果找不到匹配的状态码则返回null
+         */
+        public static LoginStatus getByCode(int code){
+            for(LoginStatus status:values()){
+                if(status.code==code){
+                    return status;
+                }
+            }
+            return null;
+        }
+
+        // getter方法（final属性无需setter）
+        /**
+         * 【任务5】
+         * 方法： getCode 获取code值
+         *
+         * @return int code值
+         */
+        public int getCode() {
+            return code;
+        }
+
+        /**
+         * 任务【6】
+         * 方法： getMsg 获取消息内容
+         *
+         * @return String 返回当前对象的消息字符串
+         */
+        public String getMsg() {
+            return msg;
+        }
+ }
+

C11-Swing/src/po/AccountPo.java

@@ -0,0 +1,22 @@
+package po;
+
+public class AccountPo {
+    private String username;
+    private String password;
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+}

C11-Swing/src/service/AuthService.java

@@ -0,0 +1,27 @@
+package service;
+
+import common.LoginStatus;
+import po.AccountPo;
+
+public class AuthService {
+    private static AccountPo dbAccount = new AccountPo();
+
+    static {
+        dbAccount.setUsername("admin");
+        dbAccount.setPassword("123456");
+    }
+
+    public LoginStatus login(AccountPo account) {
+        //1.获取用户输入的账号在数据库中查询该账号信息
+        //2.账号不存在
+        //3.账号存在 比较密码是否一致
+        if (dbAccount.getUsername().equals(account.getUsername()) &&
+                dbAccount.getPassword().equals(account.getPassword()))
+            return LoginStatus.SUCCESS;
+        else if (!dbAccount.getUsername().equals(account.getUsername())) {
+            return LoginStatus.USER_NOT_FOUND;
+        }
+        return LoginStatus.PASSWORD_ERROR;
+    }
+}
+

C11-Swing/src/utils/CaptchaUtils.java

@@ -0,0 +1,54 @@
+package utils;
+
+import java.util.Random;
+
+/**
+ * 验证码工具类
+ */
+public class CaptchaUtils {  // final修饰类：不能被继承
+    // 【任务1】静态常量：字符集（全局固定）
+    static final String CHAR_SET="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+
+    // 【任务2】静态常量：验证码长度（全局固定）
+    static final int CAPTCHA_LENGTH=4;
+
+    // 【任务3】私有构造方法：禁止创建实例（工具类无需实例化）
+    private CaptchaUtils(){
+    }
+
+    /**
+     * 【任务4】
+     * 静态方法：generateCaptcha 生成随机验证码
+     * @return String 返回生成的随机验证码字符串
+     */
+    public static String generateCaptcha(){
+        Random random = new Random();
+        //生成随机验证码
+        StringBuilder sb = new StringBuilder();
+        for(int i=0;i<CAPTCHA_LENGTH;i++){
+            //生成随机数索引
+            int index = random.nextInt(CHAR_SET.length());
+            //根据索引获取随机字符
+            sb.append(CHAR_SET.charAt(index));
+        }
+        return sb.toString();
+    }
+    /**
+     * 【任务5】
+     * 静态方法：verifyCaptcha 验证验证码 
+     * @param inputCaptcha 用户输入的验证码
+     * @param systemCaptcha 系统生成的验证码
+     * @return boolean 验证结果，true表示验证通过，false表示验证失败
+     */
+    public static boolean verifyCaptcha(String inputCaptcha,String systemCaptcha){
+        return inputCaptcha.equalsIgnoreCase(systemCaptcha);
+    }
+
+    public static void main(String[] args) {
+        for(int i=0;i<10;i++)
+            System.out.println(generateCaptcha());
+
+        System.out.println(CaptchaUtils.verifyCaptcha(generateCaptcha(), generateCaptcha()));
+    }
+
+}

C11-Swing/src/view/LoginFrame.java

@@ -0,0 +1,192 @@
+package view;
+
+import common.LoginStatus;
+import utils.CaptchaUtils;
+import service.AuthService;
+import po.AccountPo;
+
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+
+
+public class LoginFrame extends JFrame {
+    private JPanel mainPanel;//中间层面板
+    private JTextField usernameTextField;//用户名输入框
+    private JPasswordField passwordField;//密码输入框
+    private JTextField captchaTextField;//验证码输入框
+    private JLabel captchaLabel;//验证码标签
+    private JButton loginButton;//登录按钮
+    private JButton registerButton;//注册按钮
+    private AuthService authService = new AuthService();
+    public LoginFrame() {
+        //初始化界面
+        initView();
+        //注册监听器
+        initListener();
+        usernameTextField.setText("admin");
+        passwordField.setText("123456");
+        captchaTextField.setText(captchaLabel.getText());
+    }
+    //顶层容器
+    private void initView(){
+        //1.设置标题
+        setTitle("登录");
+        //2.设置点击关闭时的动作
+        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        //3.中间层容器
+        add(initPanel());
+        //4.不允许窗口改变大小
+        setResizable(false);
+        //5.自动调整窗口大小 居中显示
+        pack();//自动调整窗口大小
+        setLocationRelativeTo(null);//剧中
+        //6.显示窗口
+        setVisible(true);
+    }
+
+    private void initListener(){
+        captchaLabel.addMouseListener(new MouseAdapter() {
+            @Override
+            public void mouseClicked(MouseEvent e) {
+                captchaLabel.setText(CaptchaUtils.generateCaptcha());
+            }
+        });
+
+        loginButton.addActionListener(e -> {
+            //点击注册按钮后的事件
+            String username = usernameTextField.getText();
+            String password = passwordField.getText();
+            String captcha = captchaTextField.getText();
+            //System.out.println("用户名" + username + " 密码" + password + " 验证码" + captcha);
+            if(username.equals("")||password.equals("")||captcha.equals("")) {
+                JOptionPane.showMessageDialog(this, "请填写完整信息！", "提示", JOptionPane.INFORMATION_MESSAGE);
+                return;
+            }
+            if(!CaptchaUtils.verifyCaptcha(captcha,captchaLabel.getText())){
+                JOptionPane.showMessageDialog(this, LoginStatus.CAPTCHA_ERROR.getMsg(), "提示", JOptionPane.INFORMATION_MESSAGE);
+                return;
+            }
+            AccountPo account = new AccountPo();
+            account.setUsername(username);
+            account.setPassword(password);
+            LoginStatus loginStatus = authService.login(account);
+            if(loginStatus == LoginStatus.SUCCESS) {
+                //进入主界面
+                MainFrame mainFrame = new MainFrame();
+                this.dispose();
+            }
+            else if(loginStatus == LoginStatus.USER_NOT_FOUND) {
+                JOptionPane.showMessageDialog(this, LoginStatus.USER_NOT_FOUND.getMsg(), "提示", JOptionPane.INFORMATION_MESSAGE);
+                return;
+            }
+            else if(loginStatus == LoginStatus.PASSWORD_ERROR) {
+                JOptionPane.showMessageDialog(this, LoginStatus.PASSWORD_ERROR.getMsg(), "提示", JOptionPane.INFORMATION_MESSAGE);
+                return;
+            }
+            else{
+                JOptionPane.showMessageDialog(this, loginStatus.getMsg(), "提示", JOptionPane.INFORMATION_MESSAGE);
+            }
+        });
+        registerButton.addActionListener(e -> {
+            //点击注册按钮后的事件
+            return;
+        });
+    }
+    private JPanel initPanel(){
+        mainPanel = new JPanel();
+        GridLayout gridLayout = new GridLayout(6,1,10,10);
+        mainPanel.setLayout(gridLayout);
+        //第1层 空白面板 占用
+        mainPanel.add(new JPanel());
+        //第2层 账号面板
+        mainPanel.add(initAcountPanel());
+        //第3层 密码面板
+        mainPanel.add(initPasswordPanel());
+        //第4层 验证码面板
+        mainPanel.add(initCaptchaPanel());
+        //第5层 按钮面板
+        mainPanel.add(initButtonPanel());
+        //第6层 空白面板 占用
+        return mainPanel;
+    }
+    /**
+     * 初始化账户信息面板
+     * @return 包含用户名输入框的面板组件
+     */
+    private JPanel initAcountPanel(){
+        JPanel panel = new JPanel();
+        panel.setLayout(new GridLayout(1,4,10,0));
+        JLabel label = new JLabel("用户名：");
+        //让label居右
+        label.setHorizontalAlignment(SwingConstants.RIGHT);
+        usernameTextField = new JTextField(15);
+        panel.add(label);
+        panel.add(usernameTextField);
+        panel.add(new JPanel());
+        return panel;
+    }
+
+    /**
+     * 初始化密码输入面板
+     * @return 包含密码标签和输入框的JPanel面板
+     */
+    private JPanel initPasswordPanel(){
+        JPanel panel = new JPanel();
+        // 设置网格布局，1行4列，水平间距10像素
+        panel.setLayout(new GridLayout(1,4,10,0));
+        JLabel label = new JLabel("密    码：");
+        // 设置标签文本右对齐
+        label.setHorizontalAlignment(SwingConstants.RIGHT);
+        passwordField = new JPasswordField(15);
+        panel.add(label);
+        panel.add(passwordField);
+        // 添加空白面板占位
+        panel.add(new JPanel());
+        return panel;
+    }
+
+
+    /**
+     * 初始化验证码面板
+     *
+     * @return 包含验证码相关组件的JPanel面板
+     */
+    private JPanel initCaptchaPanel(){
+        // 创建面板并设置网格布局
+        JPanel panel = new JPanel();
+        panel.setLayout(new GridLayout(1,4,10,0));
+
+        // 创建验证码标签
+        JLabel label = new JLabel("验证码：");
+        label.setHorizontalAlignment(SwingConstants.RIGHT);
+
+        // 创建验证码输入框和验证码显示标签
+        captchaTextField = new JTextField(4);
+        captchaLabel = new JLabel(CaptchaUtils.generateCaptcha());
+
+        // 将组件添加到面板中
+        panel.add(label);
+        panel.add(captchaTextField);
+        panel.add(captchaLabel);
+
+        return panel;
+    }
+
+
+    private JPanel initButtonPanel(){
+        JPanel panel = new JPanel();
+        panel.setLayout(new GridLayout(1,4,10,0));
+        loginButton = new JButton("登录");
+        registerButton = new JButton("注册");
+        panel.add(new JPanel());
+        panel.add(loginButton);
+        panel.add(registerButton);
+        panel.add(new JPanel());
+        return panel;
+    }
+
+
+
+}

C11-Swing/src/view/MainFrame.java

@@ -0,0 +1,7 @@
+package view;
+
+import javax.swing.*;
+
+public class MainFrame {
+    JFrame frame = new JFrame();
+}