完整程序
1. 课程设计目的
《面向对象程序设计》是一门实践性很强的计算机专业基础课程，课程设计是学习完该课程后进行的一次较全面的综合练习。其目的在于通过实践加深学生对面向对象程序设计的理论、方法和基础知识的理解，掌握使用Java语言进行面向对象设计的基本方法，提高运用面向对象知识分析实际问题、解决实际问题的能力。
2. 课程设计任务与要求
课程设计可选用NetBeans、Eclipse、JBuilder等作为开发平台以提高开发效率，尽可能熟练掌握其中一种集成开发环境。
通过这次设计，要求掌握以下内容：
1）面向对象技术中的继承与多态（重载和覆盖）机制、各种修饰符的使用
2）类、包、接口的定义与使用
3）常用工具类与算法的实现（数组、向量、字符串、链表）
4）Java常用标准GUI组件及其事件处理
5）Java的异常处理机制
6）Java的数据库连接技术
7）Java的多线程技术
8）Java的网络编程
3. 课程设计说明书
3.1 需求分析
3.1.1 功能分析
1、ATM机个人用户的信息的显示和删除，个人用户信息主要包括：账号，密码，存款的多少。
2、存款信息的显示，更改，操作，存款的存储，提取，转账，金额。
3、个人用户密码的更改。满足用户的需求。
4、设置一个登陆界面，保护用户的个人账户的安全。
3.1.2 性能要求分析
1、系统易操作性：
所开发的系统就做到操作简单，尽量使系统操作不受用户对电脑知识水平的限制。
2、系统具有可维护性：
由于系统涉及的信息比较广，TXT中的数据需要定期修改，系统可利用的空间及性能也随之下降，为了使系统更好地运转。
3、系统具有开放性：
该系统能够在开放的硬件系结构中运行，并且能与其他系统顺利连接，不会因外部系统的不同面要做在量的修改工作。
3.2 概要设计
3.2.1 功能模块图，如图1。
3.3 详细设计
3.3.1 实体类的设计
存款信息实体类：属性包括存款余额（deposit），取款数额（withdraw），转账数额（transfer accounts）。
账户信息实体类：属性包括账户密码（Password）
3.3.2 实现数据库处理
本程序采用txt文件对数据进行存储，在java实际中添加一个data类来进行对txt文件中的东西进行操作。
3.4 主要程序功能流程图
1、查询存款信息，如图2。存储存款信息，如图3。取出存款信息，如图4。转出存款信息，如图5。
2、修改账户信息，如图6。
4. 课程设计成果
4.1 主要代码
（加注释共1200+代码）
4.1.1 测试类
package com.wangjunwei.system; public class A_Text { public static void main(String[] args) { //主函数 new B_Init(); } }
4.1.2 初始化界面类
package com.wangjunwei.system; import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; public class B_Init extends JFrame { //初始化界面 public B_Init() { this.setTitle("ATM系统"); this.setSize(1800, 1000); this.setLayout(null); this.setAlwaysOnTop(true); this.setLocationRelativeTo(null); this.setDefaultCloseOperation(3); this.setResizable(false); //创建一个容器 JPanel initPanel = new JPanel(); setContentPane(initPanel); initPanel.setLayout(null); //"欢迎光临"标签 JLabel hello1 = new JLabel("欢迎光临"); hello1.setFont(new Font("黑体", 3, 150)); hello1.setForeground(Color.WHITE); //System.out.println(hello1.getPreferredSize()); hello1.setBounds(420, 250, 790, 172); hello1.setOpaque(false); initPanel.add(hello1); //"ATM系统"标签 JLabel hello2 = new JLabel("ATM系统"); hello2.setFont(new Font("黑体", 3, 150)); hello2.setForeground(Color.WHITE); //System.out.println(hello2.getPreferredSize()); hello2.setBounds(700, 450, 790, 172); hello2.setOpaque(false); initPanel.add(hello2); //登录按钮 JButton loginIn = new JButton("登录"); String user = null; loginIn.setForeground(Color.DARK_GRAY); loginIn.setFont(new Font("黑体", 1, 40)); loginIn.setBackground(Color.WHITE); loginIn.setBounds(600, 700, 200, 66); initPanel.add(loginIn); //登录事件 loginIn.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { new B_Login(user); } }); //注册按钮 JButton registerIn = new JButton("注册"); registerIn.setForeground(Color.DARK_GRAY); registerIn.setFont(new Font("黑体", 1, 40)); registerIn.setBackground(Color.WHITE); registerIn.setBounds(1000, 700, 200, 66); //注册事件 registerIn.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { new B_Register(); } }); initPanel.add(registerIn); //背景图 ImageIcon picture = new ImageIcon(new ImageIcon("src\\com\\wangjunwei\\system\\P1.jpg").getImage().getScaledInstance(getWidth(), getHeight(), Image.SCALE_DEFAULT)); JLabel imageLabel = new JLabel(picture); imageLabel.setBounds(0, 0, getWidth(), getHeight()); initPanel.add(imageLabel); this.setVisible(true); } }
4.1.3 登录界面类
package com.wangjunwei.system; import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.awt.Image; import java.io.*; import java.util.HashMap; import java.util.Map; public class B_Login extends JFrame { //创建一个字典，用于存放账号密码 Map<String, String> users = new HashMap<>(); public B_Login(String User) { //初始化界面 this.setTitle("Login"); this.setSize(800, 400); this.setLocationRelativeTo(null); this.setAlwaysOnTop(true); this.setDefaultCloseOperation(2); this.setResizable(false); init(); this.setVisible(true); } public void init() { //字体 Font faceOne = new Font("黑体", 3, 40); Font faceTwo = new Font("Comic Sans MS", 3, 25); //创建一个容器 JPanel loginPanel = new JPanel(); loginPanel.setBorder(BorderFactory.createLineBorder(Color.BLUE)); setContentPane(loginPanel); loginPanel.setLayout(null); //"登录"标签 JLabel loginTitle = new JLabel("登 录"); loginTitle.setFont(new Font("黑体", 1, 50)); loginTitle.setForeground(Color.WHITE); //System.out.println(ID.getPreferredSize()); loginTitle.setBounds(125, 50, 148, 47); loginTitle.setOpaque(false); loginPanel.add(loginTitle); //"账号"标签 JLabel ID = new JLabel("账号："); ID.setFont(faceOne); ID.setForeground(Color.WHITE); //System.out.println(ID.getPreferredSize()); ID.setBounds(30, 130, 148, 47); ID.setOpaque(false); loginPanel.add(ID); //"密码"标签 JLabel passWord = new JLabel("密码："); passWord.setFont(faceOne); passWord.setForeground(Color.WHITE); passWord.setBounds(30, 180, 148, 47); passWord.setOpaque(false); loginPanel.add(passWord); //账号输入框 JFormattedTextField idText = new JFormattedTextField("请输入您的账号"); idText.setForeground(Color.WHITE); idText.setToolTipText(""); idText.setOpaque(false); idText.setBounds(150, 135, 200, 40); MouseListener idAdd = new MouseListener() { @Override public void mouseClicked(MouseEvent e) { } @Override public void mousePressed(MouseEvent e) { if (idText.getText().equals("请输入您的账号")) { idText.setText(null); } } @Override public void mouseReleased(MouseEvent e) { } @Override public void mouseEntered(MouseEvent e) { } @Override public void mouseExited(MouseEvent e) { } }; idText.addMouseListener(idAdd); loginPanel.add(idText); //密码输入框 JPasswordField passText = new JPasswordField(); passText.setForeground(Color.WHITE); passText.setOpaque(false); passText.setBounds(150, 185, 200, 40); loginPanel.add(passText); //登录按钮 JButton loginTo = new JButton("Login"); loginTo.setForeground(Color.DARK_GRAY); loginTo.setFont(faceTwo); loginTo.setBackground(Color.WHITE); loginTo.setBounds(120, 270, 150, 50); //登录事件 loginTo.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { String idTextUse = idText.getText(); String passTextUse = new String(passText.getPassword()); String usersPath = "src\\com\\wangjunwei\\system\\Tusers.txt"; try { File file = new File(usersPath); if (!file.exists()) { file.createNewFile(); } FileReader fileReader = new FileReader(usersPath); BufferedReader bufferedReader = new BufferedReader(fileReader); String line; while ((line = bufferedReader.readLine()) != null) { String[] parts = line.split("："); if (parts.length >= 2) { String key = parts[0].trim(); String value = parts[1].trim(); users.put(key, value); } } bufferedReader.close(); fileReader.close(); } catch (IOException ioException) { ioException.printStackTrace(); } if ((idTextUse.equals("请输入您的账号")) || (idTextUse.length() == 0) || (!users.containsKey(idTextUse))) { JOptionPane.showMessageDialog(loginPanel, "账号不存在，请注册！"); } else { if (passTextUse.equals(users.get(idTextUse))) { dispose(); JOptionPane.showMessageDialog(loginPanel, "登录成功！"); new C_Deposit(idTextUse); } else { JOptionPane.showMessageDialog(loginPanel, "账号或密码错误，请重新输入！"); } } } }); loginPanel.add(loginTo); //背景图 ImageIcon picture = new ImageIcon(new ImageIcon("src\\com\\wangjunwei\\system\\P2.jpg").getImage().getScaledInstance(getWidth(), getHeight(), Image.SCALE_DEFAULT)); JLabel imageLabel = new JLabel(picture); imageLabel.setBounds(0, 0, getWidth(), getHeight()); loginPanel.add(imageLabel); } }
4.1.4 注册界面类
package com.wangjunwei.system; import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.io.*; import java.util.HashMap; import java.util.Map; public class B_Register extends JFrame { //创建两个字典，分别保存账号密码和账号金额 Map<String, String> users = new HashMap<>(); Map<String, String> deposits = new HashMap<>(); public B_Register() { //初始化界面 this.setTitle("注册"); this.setSize(400, 280); this.setLocationRelativeTo(null); this.setAlwaysOnTop(true); this.setDefaultCloseOperation(2); this.setResizable(false); init(); this.setVisible(true); } public void init() { //字体 Font faceOne = new Font("黑体", 3, 25); Font faceTwo = new Font("Comic Sans MS", 3, 25); //创建一个容器 JPanel registerPanel = new JPanel(); registerPanel.setBorder(BorderFactory.createLineBorder(Color.WHITE)); setContentPane(registerPanel); registerPanel.setLayout(null); //"注册账号"标签 JLabel ID = new JLabel("注册账号："); ID.setFont(faceOne); ID.setForeground(Color.WHITE); //System.out.println(ID.getPreferredSize()); ID.setBounds(20, 20, 148, 47); ID.setOpaque(false); registerPanel.add(ID); //"注册密码"标签 JLabel passWord = new JLabel("注册密码："); passWord.setFont(faceOne); passWord.setForeground(Color.WHITE); passWord.setBounds(20, 70, 148, 47); passWord.setOpaque(false); registerPanel.add(passWord); //"确认密码"标签 JLabel passWordAgain = new JLabel("确认密码："); passWordAgain.setFont(faceOne); passWordAgain.setForeground(Color.WHITE); passWordAgain.setBounds(20, 120, 148, 47); passWordAgain.setOpaque(false); registerPanel.add(passWordAgain); //"注册账号"输入框 JFormattedTextField idText = new JFormattedTextField("请输入您的账号"); idText.setForeground(Color.WHITE); idText.setFont(new Font("宋体", Font.BOLD, 20)); idText.setToolTipText(""); idText.setOpaque(false); idText.setBounds(150, 25, 200, 40); //点击"注册账号"输入框触发的事件 MouseListener idAdd = new MouseListener() { @Override public void mouseClicked(MouseEvent e) { } @Override public void mousePressed(MouseEvent e) { if (idText.getText().equals("请输入您的账号")) { idText.setText(null); } } @Override public void mouseReleased(MouseEvent e) { } @Override public void mouseEntered(MouseEvent e) { } @Override public void mouseExited(MouseEvent e) { } }; idText.addMouseListener(idAdd); registerPanel.add(idText); //"注册密码"输入框 JPasswordField passText = new JPasswordField(); passText.setForeground(Color.WHITE); passText.setOpaque(false); passText.setBounds(150, 75, 200, 40); registerPanel.add(passText); //"确认密码"输入框 JPasswordField passAgainText = new JPasswordField(); passAgainText.setForeground(Color.WHITE); passAgainText.setOpaque(false); passAgainText.setBounds(150, 125, 200, 40); registerPanel.add(passAgainText); //"Register"按钮 JButton loginTo = new JButton("Register"); loginTo.setForeground(Color.WHITE); loginTo.setFont(faceTwo); loginTo.setBackground(Color.BLACK); loginTo.setBounds(100, 180, 200, 40); //"Register"事件 loginTo.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { String idTextUse = idText.getText(); String passTextUse = new String(passText.getPassword()); String passAgainTextUse = new String(passAgainText.getPassword()); String filePath = "src\\com\\wangjunwei\\system\\Tusers.txt"; try { File file = new File(filePath); if (!file.exists()) { file.createNewFile(); } FileReader fileReader = new FileReader(filePath); BufferedReader bufferedReader = new BufferedReader(fileReader); String line; while ((line = bufferedReader.readLine()) != null) { String[] parts = line.split("："); if (parts.length >= 2) { String key = parts[0].trim(); String value = parts[1].trim(); users.put(key, value); } } bufferedReader.close(); fileReader.close(); } catch (IOException ioException) { ioException.printStackTrace(); } if ((idTextUse.equals("请输入您的账号")) || (idTextUse.length() == 0)) { JOptionPane.showMessageDialog(registerPanel, "请输入你要注册的账号！"); } else if (passTextUse.length() == 0) { JOptionPane.showMessageDialog(registerPanel, "请输入你要注册的密码！"); } else if (users.containsKey(idTextUse)) { JOptionPane.showMessageDialog(registerPanel, "该账号已存在，请重新输入！"); } else if (!(passTextUse.equals(passAgainTextUse))) { JOptionPane.showMessageDialog(registerPanel, "两次密码不一致，请重新输入！"); } else { try { File file = new File(filePath); users.put(idTextUse, passTextUse); FileWriter fileWriter = new FileWriter(file.getAbsoluteFile()); BufferedWriter bufferedWriter = new BufferedWriter(fileWriter); for (Map.Entry<String, String> entry : users.entrySet()) { bufferedWriter.write(entry.getKey() + " ： " + entry.getValue()); bufferedWriter.newLine(); } bufferedWriter.close(); fileWriter.close(); JOptionPane.showMessageDialog(registerPanel, "注册成功！"); } catch (IOException ioException) { ioException.printStackTrace(); } } //第一次注册时需要同时创建保存存款信息的文件 String storePath = new String("src\\com\\wangjunwei\\system\\Tdeposits.txt"); try { File file = new File(storePath); if (!file.exists()) { file.createNewFile(); } FileReader fileReader = new FileReader(storePath); BufferedReader bufferedReader = new BufferedReader(fileReader); String line; while ((line = bufferedReader.readLine()) != null) { String[] parts = line.split("："); if (parts.length >= 2) { String key = parts[0].trim(); String value = parts[1].trim(); deposits.put(key, value); } } bufferedReader.close(); fileReader.close(); } catch (IOException ioException) { ioException.printStackTrace(); } try { File file = new File(storePath); deposits.put(idTextUse, "0"); FileWriter fileWriter = new FileWriter(file.getAbsoluteFile()); BufferedWriter bufferedWriter = new BufferedWriter(fileWriter); for (Map.Entry<String, String> entry : deposits.entrySet()) { bufferedWriter.write(entry.getKey() + " ： " + entry.getValue()); bufferedWriter.newLine(); } bufferedWriter.close(); fileWriter.close(); } catch (IOException ioException) { ioException.printStackTrace(); } } }); registerPanel.add(loginTo); //背景图 ImageIcon picture = new ImageIcon(new ImageIcon("src\\com\\wangjunwei\\system\\P3.jpg").getImage().getScaledInstance(getWidth(), getHeight(), Image.SCALE_DEFAULT)); JLabel imageLabel = new JLabel(picture); imageLabel.setBounds(0, 0, getWidth(), getHeight()); registerPanel.add(imageLabel); } }
4.1.5 登录成功后，主界面类
package com.wangjunwei.system; import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; public class C_Deposit extends JFrame { public C_Deposit(String User) { //初始化界面 this.setTitle("存款信息"); this.setSize(800, 500); this.setLayout(null); this.setAlwaysOnTop(true); this.setLocationRelativeTo(null); this.setDefaultCloseOperation(2); this.setResizable(false); //创建一个容器 JPanel initPanel = new JPanel(); initPanel.setBorder(BorderFactory.createLineBorder(Color.BLUE)); setContentPane(initPanel); initPanel.setLayout(null); //"欢迎"标签 JLabel hello = new JLabel("欢迎 " + User + "！"); hello.setFont(new Font("黑体", 3, 50)); hello.setForeground(Color.WHITE); //System.out.println(hello.getPreferredSize()); hello.setBounds(150, 50, 1000, 60); initPanel.add(hello); //"查询"标签 JButton showMoney = new JButton("查询"); showMoney.setForeground(Color.WHITE); showMoney.setBackground(Color.BLACK); showMoney.setOpaque(false); showMoney.setFont(new Font("黑体", 1, 50)); //System.out.println(showInformation.getPreferredSize()); showMoney.setBounds(150, 180, 200, 50); showMoney.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { new C_DepositShow(User); } }); initPanel.add(showMoney); //"存款"标签 JButton putMoney = new JButton("存款"); putMoney.setForeground(Color.WHITE); putMoney.setBackground(Color.WHITE); putMoney.setOpaque(false); putMoney.setFont(new Font("黑体", 1, 50)); //System.out.println(showInformation.getPreferredSize()); putMoney.setBounds(430, 180, 200, 50); putMoney.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { new C_DepositPut(User); } }); initPanel.add(putMoney); //"取款"标签 JButton getMoney = new JButton("取款"); getMoney.setForeground(Color.WHITE); getMoney.setBackground(Color.WHITE); getMoney.setOpaque(false); getMoney.setFont(new Font("黑体", 1, 50)); //System.out.println(showInformation.getPreferredSize()); getMoney.setBounds(150, 250, 200, 50); getMoney.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { new C_DepositGet(User); } }); initPanel.add(getMoney); //"转账"标签 JButton pushMoney = new JButton("转账"); pushMoney.setForeground(Color.WHITE); pushMoney.setBackground(Color.WHITE); pushMoney.setOpaque(false); pushMoney.setFont(new Font("黑体", 1, 50)); //System.out.println(showInformation.getPreferredSize()); pushMoney.setBounds(430, 250, 200, 50); pushMoney.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { new C_DepositPush(User); } }); initPanel.add(pushMoney); //"修改密码"标签 JButton changePassword = new JButton("修改密码"); changePassword.setForeground(Color.BLACK); changePassword.setBackground(Color.WHITE); //changePassword.setOpaque(false); changePassword.setFont(new Font("黑体", Font.BOLD, 40)); //System.out.println(showInformation.getPreferredSize()); changePassword.setBounds(270, 350, 240, 60); changePassword.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { new C_ChangePassword(User); } }); initPanel.add(changePassword); //背景图 ImageIcon picture = new ImageIcon(new ImageIcon("src\\com\\wangjunwei\\system\\P4.jpg").getImage().getScaledInstance(getWidth(), getHeight(), Image.SCALE_DEFAULT)); JLabel imageLabel = new JLabel(picture); imageLabel.setBounds(0, 0, getWidth(), getHeight()); initPanel.add(imageLabel); this.setVisible(true); } }
4.1.6 查询存款信息类
package com.wangjunwei.system; import javax.swing.*; import java.awt.*; import java.io.BufferedReader; import java.io.FileReader; import java.io.IOException; import java.util.HashMap; import java.util.Map; public class C_DepositShow extends JFrame { public C_DepositShow(String User) { //创建一个字典，用于存放存款信息 Map<String, String> deposit = new HashMap<>(); //初始化界面 this.setTitle("查询"); this.setSize(500, 400); this.setLayout(null); this.setAlwaysOnTop(true); this.setLocationRelativeTo(null); this.setDefaultCloseOperation(2); this.setResizable(false); //创建一个容器 JPanel initPanel = new JPanel(); setContentPane(initPanel); initPanel.setLayout(null); //打开文件 String depositsPath = "src\\com\\wangjunwei\\system\\Tdeposits.txt"; try { FileReader fileReader = new FileReader(depositsPath); BufferedReader bufferedReader = new BufferedReader(fileReader); String line; while ((line = bufferedReader.readLine()) != null) { String[] parts = line.split("："); if (parts.length >= 2) { String key = parts[0].trim(); String value = parts[1].trim(); deposit.put(key, value); } } //"您的余额如下"标签 JLabel myMoneyTitle = new JLabel("您的余额如下"); myMoneyTitle.setFont(new Font("黑体", Font.BOLD, 50)); //System.out.println(fixedMoney.getPreferredSize()); myMoneyTitle.setForeground(Color.WHITE); myMoneyTitle.setBackground(Color.WHITE); myMoneyTitle.setBounds(85, 100, 377, 58); initPanel.add(myMoneyTitle); //"余额"标签 JLabel myMoney = new JLabel(deposit.get(User) + "元"); myMoney.setFont(new Font("黑体", Font.BOLD, 50)); //System.out.println(fixedMoney.getPreferredSize()); myMoney.setForeground(Color.WHITE); myMoney.setBackground(Color.WHITE); myMoney.setBounds(150, 200, 1000, 58); initPanel.add(myMoney); bufferedReader.close(); fileReader.close(); } catch (IOException ioException) { ioException.printStackTrace(); } //背景图 ImageIcon picture = new ImageIcon(new ImageIcon("src\\com\\wangjunwei\\system\\P4.jpg").getImage().getScaledInstance(getWidth(), getHeight(), Image.SCALE_DEFAULT)); JLabel imageLabel = new JLabel(picture); imageLabel.setBounds(0, 0, getWidth(), getHeight()); initPanel.add(imageLabel); this.setVisible(true); } }
4.1.7 存款类
package com.wangjunwei.system; import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.io.*; import java.util.HashMap; import java.util.Map; public class C_DepositPut extends JFrame { public C_DepositPut(String User) { //创建一个字典，保存存款信息 Map<String, String> deposit = new HashMap<>(); //初始化界面 this.setTitle("存款"); this.setSize(500, 400); this.setLayout(null); this.setAlwaysOnTop(true); this.setLocationRelativeTo(null); this.setDefaultCloseOperation(2); this.setResizable(false); //创建一个容器 JPanel initPanel = new JPanel(); setContentPane(initPanel); initPanel.setLayout(null); //打开文件 String depositsPath = "src\\com\\wangjunwei\\system\\Tdeposits.txt"; try { FileReader fileReader = new FileReader(depositsPath); BufferedReader bufferedReader = new BufferedReader(fileReader); String line; while ((line = bufferedReader.readLine()) != null) { String[] parts = line.split("："); if (parts.length >= 2) { String key = parts[0].trim(); String value = parts[1].trim(); deposit.put(key, value); } } //"存款"标签 JLabel myMoney = new JLabel("存 款"); myMoney.setFont(new Font("宋体", Font.BOLD, 50)); myMoney.setForeground(Color.WHITE); myMoney.setBounds(180, 50, 377, 58); initPanel.add(myMoney); //"存款"文本框 JFormattedTextField moneyText = new JFormattedTextField("请输入您要存入的金额"); moneyText.setForeground(Color.WHITE); moneyText.setFont(new Font("宋体", Font.BOLD, 15)); moneyText.setToolTipText(""); moneyText.setOpaque(false); moneyText.setBounds(150, 150, 200, 40); MouseListener moneyAdd = new MouseListener() { @Override public void mouseClicked(MouseEvent e) { } @Override public void mousePressed(MouseEvent e) { if (moneyText.getText().equals("请输入您要存入的金额")) { moneyText.setFont(new Font("宋体", Font.BOLD, 30)); moneyText.setText(null); } } @Override public void mouseReleased(MouseEvent e) { } @Override public void mouseEntered(MouseEvent e) { } @Override public void mouseExited(MouseEvent e) { } }; moneyText.addMouseListener(moneyAdd); initPanel.add(moneyText); //"Put"按钮 JButton put = new JButton("Put"); put.setForeground(Color.WHITE); put.setFont(new Font("Comic Sans MS", 3, 50)); put.setBackground(Color.BLACK); put.setOpaque(false); put.setBounds(175, 250, 150, 50); //"Put"事件 put.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { try { int addMoney = Integer.parseInt(moneyText.getText()); int oldMoney = Integer.parseInt(deposit.get(User)); if ((addMoney % 100) == 0 && addMoney != 0) { String newMoney = Integer.toString(addMoney + oldMoney); deposit.put(User, newMoney); String depositsPath = "src\\com\\wangjunwei\\system\\Tdeposits.txt"; try { File file = new File(depositsPath); FileWriter fileWriter = new FileWriter(file.getAbsoluteFile()); BufferedWriter bufferedWriter = new BufferedWriter(fileWriter); for (Map.Entry<String, String> entry : deposit.entrySet()) { bufferedWriter.write(entry.getKey() + " ： " + entry.getValue()); bufferedWriter.newLine(); } bufferedWriter.close(); fileWriter.close(); dispose(); JOptionPane.showMessageDialog(initPanel, "存入成功！"); } catch (IOException ioException) { ioException.printStackTrace(); } } else { JOptionPane.showMessageDialog(initPanel, "请输入100的倍数！（非0）"); } } catch (NumberFormatException numberFormatException) { JOptionPane.showMessageDialog(initPanel, "非法输入！"); } } }); initPanel.add(put); bufferedReader.close(); fileReader.close(); } catch (IOException ioException) { ioException.printStackTrace(); } //背景图 ImageIcon picture = new ImageIcon(new ImageIcon("src\\com\\wangjunwei\\system\\P4.jpg").getImage().getScaledInstance(getWidth(), getHeight(), Image.SCALE_DEFAULT)); JLabel imageLabel = new JLabel(picture); imageLabel.setBounds(0, 0, getWidth(), getHeight()); initPanel.add(imageLabel); this.setVisible(true); } }
4.1.8 取款类
package com.wangjunwei.system; import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.io.*; import java.util.HashMap; import java.util.Map; public class C_DepositGet extends JFrame { public C_DepositGet(String User) { //创建一个字典，用于保存存款信息 Map<String, String> deposit = new HashMap<>(); //初始化界面 this.setTitle("取款"); this.setSize(500, 400); this.setLayout(null); this.setAlwaysOnTop(true); this.setLocationRelativeTo(null); this.setDefaultCloseOperation(2); this.setResizable(false); //创建一个容器 JPanel initPanel = new JPanel(); setContentPane(initPanel); initPanel.setLayout(null); //打开文件 String depositsPath = "src\\com\\wangjunwei\\system\\Tdeposits.txt"; try { FileReader fileReader = new FileReader(depositsPath); BufferedReader bufferedReader = new BufferedReader(fileReader); String line; while ((line = bufferedReader.readLine()) != null) { String[] parts = line.split("："); if (parts.length >= 2) { String key = parts[0].trim(); String value = parts[1].trim(); deposit.put(key, value); } } //"取款"标签 JLabel myMoney = new JLabel("取 款"); myMoney.setFont(new Font("宋体", Font.BOLD, 50)); myMoney.setForeground(Color.WHITE); myMoney.setBounds(180, 50, 377, 58); initPanel.add(myMoney); //"取款"文本框 JFormattedTextField moneyText = new JFormattedTextField("请输入您要取出的金额"); moneyText.setForeground(Color.WHITE); moneyText.setFont(new Font("宋体", Font.BOLD, 15)); moneyText.setToolTipText(""); moneyText.setOpaque(false); moneyText.setBounds(145, 150, 200, 40); MouseListener moneyAdd = new MouseListener() { @Override public void mouseClicked(MouseEvent e) { } @Override public void mousePressed(MouseEvent e) { if (moneyText.getText().equals("请输入您要取出的金额")) { moneyText.setFont(new Font("宋体", Font.BOLD, 30)); moneyText.setText(null); } } @Override public void mouseReleased(MouseEvent e) { } @Override public void mouseEntered(MouseEvent e) { } @Override public void mouseExited(MouseEvent e) { } }; moneyText.addMouseListener(moneyAdd); initPanel.add(moneyText); //"Get"按钮 JButton get = new JButton("Get"); get.setForeground(Color.WHITE); get.setFont(new Font("Comic Sans MS", 3, 50)); get.setBackground(Color.BLACK); get.setOpaque(false); get.setBounds(170, 250, 150, 50); //"Get"事件 get.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { try { int deleteMoney = Integer.parseInt(moneyText.getText()); int oldMoney = Integer.parseInt(deposit.get(User)); if ((oldMoney - deleteMoney) < 0) { JOptionPane.showMessageDialog(initPanel, "余额不足！请重新输入！"); } else if (deleteMoney % 100 != 0 || deleteMoney == 0) { JOptionPane.showMessageDialog(initPanel, "请输入100的倍数！（非0）"); } else { String newMoney = Integer.toString(oldMoney - deleteMoney); deposit.put(User, newMoney); String depositsPath = "src\\com\\wangjunwei\\system\\Tdeposits.txt"; try { File file = new File(depositsPath); FileWriter fileWriter = new FileWriter(file.getAbsoluteFile()); BufferedWriter bufferedWriter = new BufferedWriter(fileWriter); for (Map.Entry<String, String> entry : deposit.entrySet()) { bufferedWriter.write(entry.getKey() + " ： " + entry.getValue()); bufferedWriter.newLine(); } bufferedWriter.close(); fileWriter.close(); dispose(); JOptionPane.showMessageDialog(initPanel, "取出成功！"); } catch (IOException ioException) { ioException.printStackTrace(); } } } catch (NumberFormatException numberFormatException) { JOptionPane.showMessageDialog(initPanel, "非法输入！"); } } }); initPanel.add(get); bufferedReader.close(); fileReader.close(); } catch (IOException ioException) { ioException.printStackTrace(); } //背景图 ImageIcon picture = new ImageIcon(new ImageIcon("src\\com\\wangjunwei\\system\\P4.jpg").getImage().getScaledInstance(getWidth(), getHeight(), Image.SCALE_DEFAULT)); JLabel imageLabel = new JLabel(picture); imageLabel.setBounds(0, 0, getWidth(), getHeight()); initPanel.add(imageLabel); this.setVisible(true); } }
4.1.9 转账类
package com.wangjunwei.system; import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.io.*; import java.util.HashMap; import java.util.Map; public class C_DepositPush extends JFrame { public C_DepositPush(String User) { //创建一个字典，保存存款信息 Map<String, String> deposit = new HashMap<>(); //初始化界面 this.setTitle("转 账"); this.setSize(500, 400); this.setLayout(null); this.setAlwaysOnTop(true); this.setLocationRelativeTo(null); this.setDefaultCloseOperation(2); this.setResizable(false); //创建一个容器 JPanel initPanel = new JPanel(); setContentPane(initPanel); initPanel.setLayout(null); //打开文件 String depositsPath = "src\\com\\wangjunwei\\system\\Tdeposits.txt"; try { FileReader fileReader = new FileReader(depositsPath); BufferedReader bufferedReader = new BufferedReader(fileReader); String line; while ((line = bufferedReader.readLine()) != null) { String[] parts = line.split("："); if (parts.length >= 2) { String key = parts[0].trim(); String value = parts[1].trim(); deposit.put(key, value); } } //"转账"标签 JLabel pushTitle = new JLabel("转 账"); pushTitle.setFont(new Font("宋体", Font.BOLD, 50)); pushTitle.setForeground(Color.WHITE); pushTitle.setBounds(180, 30, 377, 58); initPanel.add(pushTitle); //"账号"标签 JLabel pushUser = new JLabel("账号："); pushUser.setFont(new Font("宋体", Font.BOLD, 40)); pushUser.setForeground(Color.WHITE); pushUser.setBounds(50, 110, 377, 58); initPanel.add(pushUser); //"金额"标签 JLabel pushMoney = new JLabel("金额："); pushMoney.setFont(new Font("宋体", Font.BOLD, 40)); pushMoney.setForeground(Color.WHITE); pushMoney.setBounds(50, 180, 377, 58); initPanel.add(pushMoney); //"转账账号"文本框 JFormattedTextField userText = new JFormattedTextField("请输入您要转给的账号"); userText.setForeground(Color.WHITE); userText.setFont(new Font("宋体", Font.BOLD, 15)); userText.setToolTipText(""); userText.setOpaque(false); userText.setBounds(180, 120, 200, 40); MouseListener userAdd = new MouseListener() { @Override public void mouseClicked(MouseEvent e) { } @Override public void mousePressed(MouseEvent e) { if (userText.getText().equals("请输入您要转给的账号")) { userText.setFont(new Font("宋体", Font.BOLD, 30)); userText.setText(null); } } @Override public void mouseReleased(MouseEvent e) { } @Override public void mouseEntered(MouseEvent e) { } @Override public void mouseExited(MouseEvent e) { } }; userText.addMouseListener(userAdd); initPanel.add(userText); //"转账金额"文本框 JFormattedTextField moneyText = new JFormattedTextField("请输入您要转账的金额"); moneyText.setForeground(Color.WHITE); moneyText.setFont(new Font("宋体", Font.BOLD, 15)); moneyText.setToolTipText(""); moneyText.setOpaque(false); moneyText.setBounds(180, 190, 200, 40); MouseListener moneyAdd = new MouseListener() { @Override public void mouseClicked(MouseEvent e) { } @Override public void mousePressed(MouseEvent e) { if (moneyText.getText().equals("请输入您要转账的金额")) { moneyText.setFont(new Font("宋体", Font.BOLD, 30)); moneyText.setText(null); } } @Override public void mouseReleased(MouseEvent e) { } @Override public void mouseEntered(MouseEvent e) { } @Override public void mouseExited(MouseEvent e) { } }; moneyText.addMouseListener(moneyAdd); initPanel.add(moneyText); //"Push"按钮 JButton push = new JButton("Push"); push.setForeground(Color.WHITE); push.setFont(new Font("Comic Sans MS", 3, 50)); push.setBackground(Color.BLACK); push.setOpaque(false); push.setBounds(175, 260, 150, 50); //"Push"事件 push.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { try { String user = userText.getText(); int pushMoney = Integer.parseInt(moneyText.getText()); int myMoney = Integer.parseInt(deposit.get(User)); int userMoney = Integer.parseInt(deposit.get(user)); System.out.println(userText.getText()); System.out.println(moneyText.getText()); myMoney = myMoney - pushMoney; if (user.equals(User)) { JOptionPane.showMessageDialog(initPanel, "不能转给自己！"); } else if ((user.equals("请输入您要转给的账号")) || (moneyText.getText().equals(""))) { JOptionPane.showMessageDialog(initPanel, "请输入你要转给的账号和金额！"); } else if (myMoney < 0) { JOptionPane.showMessageDialog(initPanel, "余额不足！请重新输入！"); } else if (pushMoney % 100 != 0 || pushMoney == 0) { JOptionPane.showMessageDialog(initPanel, "请输入100的倍数！（非0）"); } else if (deposit.containsKey(user)) { userMoney = userMoney + pushMoney; String newMyMoney = Integer.toString(myMoney); String newUserMoney = Integer.toString(userMoney); deposit.put(User, newMyMoney); deposit.put(user, newUserMoney); String depositsPath = "src\\com\\wangjunwei\\system\\Tdeposits.txt"; try { File file = new File(depositsPath); FileWriter fileWriter = new FileWriter(file.getAbsoluteFile()); BufferedWriter bufferedWriter = new BufferedWriter(fileWriter); for (Map.Entry<String, String> entry : deposit.entrySet()) { bufferedWriter.write(entry.getKey() + " ： " + entry.getValue()); bufferedWriter.newLine(); } bufferedWriter.close(); fileWriter.close(); dispose(); JOptionPane.showMessageDialog(initPanel, "转账成功！"); } catch (IOException ioException) { ioException.printStackTrace(); } } } catch (NumberFormatException numberFormatException) { JOptionPane.showMessageDialog(initPanel, "非法输入！"); } } }); initPanel.add(push); bufferedReader.close(); fileReader.close(); } catch (IOException ioException) { ioException.printStackTrace(); } //背景图 ImageIcon picture = new ImageIcon(new ImageIcon("src\\com\\wangjunwei\\system\\P4.jpg").getImage().getScaledInstance(getWidth(), getHeight(), Image.SCALE_DEFAULT)); JLabel imageLabel = new JLabel(picture); imageLabel.setBounds(0, 0, getWidth(), getHeight()); initPanel.add(imageLabel); this.setVisible(true); } }
4.1.10 修改密码类
package com.wangjunwei.system; import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.*; import java.util.HashMap; import java.util.Map; public class C_ChangePassword extends JFrame { public C_ChangePassword(String User) { //创建一个字典，用于保存账号和密码 Map<String, String> users = new HashMap<>(); //初始化界面 this.setTitle("修改密码"); this.setSize(500, 400); this.setLayout(null); this.setAlwaysOnTop(true); this.setLocationRelativeTo(null); this.setDefaultCloseOperation(2); this.setResizable(false); //字体 Font faceOne = new Font("宋体", Font.BOLD, 25); //创建一个容器 JPanel initPanel = new JPanel(); setContentPane(initPanel); initPanel.setLayout(null); //"修改密码"标签 JLabel changeTitle = new JLabel("修改密码"); changeTitle.setFont(new Font("黑体", 3, 40)); changeTitle.setForeground(Color.WHITE); changeTitle.setBounds(150, 30, 200, 47); changeTitle.setOpaque(false); initPanel.add(changeTitle); //"原始密码"标签 JLabel oldPassword = new JLabel("原始密码："); oldPassword.setFont(faceOne); oldPassword.setForeground(Color.WHITE); oldPassword.setBounds(50, 100, 148, 47); oldPassword.setOpaque(false); initPanel.add(oldPassword); //"新的密码"标签 JLabel newPassword = new JLabel("新的密码："); newPassword.setFont(faceOne); newPassword.setForeground(Color.WHITE); newPassword.setBounds(50, 150, 148, 47); newPassword.setOpaque(false); initPanel.add(newPassword); //"确认密码"标签 JLabel passWordAgain = new JLabel("确认密码："); passWordAgain.setFont(faceOne); passWordAgain.setForeground(Color.WHITE); passWordAgain.setBounds(50, 200, 148, 47); passWordAgain.setOpaque(false); initPanel.add(passWordAgain); //"原始密码"输入框 JPasswordField oldPassText = new JPasswordField(); oldPassText.setForeground(Color.WHITE); oldPassText.setOpaque(false); oldPassText.setBounds(200, 100, 200, 40); initPanel.add(oldPassText); //"新的密码"输入框 JPasswordField newPassText = new JPasswordField(); newPassText.setForeground(Color.WHITE); newPassText.setOpaque(false); newPassText.setBounds(200, 150, 200, 40); initPanel.add(newPassText); //"确认密码"输入框 JPasswordField passAgainText = new JPasswordField(); passAgainText.setForeground(Color.WHITE); passAgainText.setOpaque(false); passAgainText.setBounds(200, 200, 200, 40); initPanel.add(passAgainText); //"Change"按钮 JButton changePassword = new JButton("Change"); changePassword.setBackground(Color.BLACK); changePassword.setFont(new Font("Comic Sans MS", 3, 30)); changePassword.setForeground(Color.WHITE); changePassword.setOpaque(false); changePassword.setBounds(150, 270, 200, 50); //"Change"事件 changePassword.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { String oldPassword = new String(oldPassText.getPassword()); String newPassword = new String(newPassText.getPassword()); String againPassword = new String(passAgainText.getPassword()); String filePath = "src\\com\\wangjunwei\\system\\Tusers.txt"; try { FileReader fileReader = new FileReader(filePath); BufferedReader bufferedReader = new BufferedReader(fileReader); String line; while ((line = bufferedReader.readLine()) != null) { String[] parts = line.split("："); if (parts.length >= 2) { String key = parts[0].trim(); String value = parts[1].trim(); users.put(key, value); } } if (oldPassword.equals(users.get(User))) { if (newPassword.equals(againPassword)) { users.put(User, newPassword); try { File file = new File(filePath); FileWriter fileWriter = new FileWriter(file.getAbsoluteFile()); BufferedWriter bufferedWriter = new BufferedWriter(fileWriter); for (Map.Entry<String, String> entry : users.entrySet()) { bufferedWriter.write(entry.getKey() + " ： " + entry.getValue()); bufferedWriter.newLine(); } bufferedWriter.close(); fileWriter.close(); dispose(); JOptionPane.showMessageDialog(initPanel, "修改成功！"); } catch (IOException ioException) { ioException.printStackTrace(); } } else { JOptionPane.showMessageDialog(initPanel, "两次密码不一致！请重新输入！"); } } else { JOptionPane.showMessageDialog(initPanel, "原始密码错误！请重新输入！"); } bufferedReader.close(); fileReader.close(); } catch (IOException ioException) { ioException.printStackTrace(); } } }); initPanel.add(changePassword); //背景图 ImageIcon picture = new ImageIcon(new ImageIcon("src\\com\\wangjunwei\\system\\P4.jpg").getImage().getScaledInstance(getWidth(), getHeight(), Image.SCALE_DEFAULT)); JLabel imageLabel = new JLabel(picture); imageLabel.setBounds(0, 0, getWidth(), getHeight()); initPanel.add(imageLabel); this.setVisible(true); } }
4.2 TXT文件内容
① Tusers.txt
（账号：密码）
1 ： 1
2 ： 2
wjw ： 1
lsr：1
② Tdeposits.txt
（账号：存款金额）
1 ： 3100
2 ： 3100
wjw ： 1000
lsr ： 10000000
4.3 运行结果
①初始化界面
②登录入口
③注册入口
④登录后进入的主界面
⑤查询界面
⑥存款界面
⑦取款界面
⑧转账界面
⑨修改密码界面
5. 课程设计心得
在Java课程的大作业中，我完成了一个ATM存款机的设计和实现。完成这个任务，不仅让我深刻认识到了Java编程的强大，同时也让我明白了ATM机器背后那个看不见的程序员的努力与艰辛。
我在Java课程设计中学到了很多知识和技能，并且对编程有了更深入的理解。首先，在这个项目中，我了解了Java的面向对象开发，掌握了基础语法和常用类的使用。其次，我学习了如何设计和实现一个简单的ATM自助取款系统，包括需求分析、设计方案、编码和测试，在这个过程中，我学会了如何使用各种编程工具来提高效率和减少错误。
首先，我了解了ATM存款机的基本功能和要求，比如身份验证、存款等。经过学习和思考，我一步步地实现了这些功能。注册登录模块，输入密码进行登陆，正确的密码才能登陆成功，同时页面的跳转有了清晰的设计，让整个系统变得更加人性化。然后我设计了查询余额，存款，取款，转账等功能，简单的实现了一个ATM自助取款系统的主要功能，最后我还设置了修改密码的功能，丰富了整个系统。
在整个项目中，我也遇到了很多挑战和难题。例如，在各种类的设计和使用中，我遇到了很多困难，但通过不断的尝试和学习，我最终解决了这些问题。此外，在实现各种功能时，我也经常遇到错误和bug，但我学会了如何通过调试和排查问题来解决这些问题。
总体而言，Java课程设计是一次非常有收获的学习经历。它不仅提高了我的编程能力，还使我更加了解软件开发的整个过程。我相信这些经验和技能将对我的未来学习和职业发展有很大帮助，在这个项目中，我收获了很多，它让我对Java编程语言的实际应用更加深入地了解。在独自完成这个项目的一瞬间，我充满了成就感，那一刻，我感觉自己的付出都是值得的，我会继续努力下去，争取完成更加出色的项目！
