用JAVA编写一个银行信息管理系统

淡淡的烟草味﹌ 2022-04-10 09:17 233阅读 0赞

项目目标：

1、记录不同用户的基本信息：用户名、身份证、账户、开户行、存款余额等

2、能对银行用户信息进行增删改等操作

3、有欢迎界面

4、有银行信息管理界面

### 有需要Java代码的可以去我的GitHub上下载：[Fated-2 GitHub][] ###

JAVA代码：

1.欢迎界面

思路：首先要有一个进入系统的主界面，要先计算好窗口的大小，然后在窗口中添加一些按钮、图标、带合适大小的图片背景的标签。

package BankSystem;
    
    import java.awt.BorderLayout;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import javax.swing.ImageIcon;
    import javax.swing.JButton;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JPanel;
    import javafx.scene.image.Image;
    
    /*
     * 银行信息管理系统
     * 1、记录不同用户的基本信息：用户名、身份证、账户、开户行、存款余额等
     * 2、能对银行用户信息进行增删查改等操作
     * 3、能实现存款、取款、登录、注册等功能。
     * 4、有欢迎界面
     * 5、有银行信息管理界面
     */
    public class Main {
    	
    
    	public static void main(String[] args) {
    		new WelcomeDemo();
    
    	}
    
    }
    
    
    //书写进入界面
    class WelcomeDemo extends JFrame{
    	
    	private JFrame window;
    	private JButton enter,exit;
    	private JLabel lb;
    	private JPanel pEnter;
    	
    	public WelcomeDemo() {
    		window=new JFrame("我家银行欢迎您");
    		window.setSize(750, 540);//窗口大小
    		window.setLocationRelativeTo(null);//居中显示
    		window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//默认可关闭
    		window.setLayout(null);//绝对布局
    		window.setResizable(false);//窗口大小不可变
    		window.setIconImage(new ImageIcon("4811FF28.png").getImage());//设置图标
    		
    		ImageIcon icon = new ImageIcon("450007f6f34d9d1e.jpg");
    		icon.setImage(icon.getImage().getScaledInstance((int)(icon.getIconWidth()), 
    				(int)(icon.getIconHeight()*0.95),0 ));
    		lb=new JLabel(new ImageIcon("450007f6f34d9d1e.jpg"));
    		lb.setBounds(0, 0, (int)(icon.getIconWidth()), (int)(icon.getIconHeight()*0.95));
    		window.add(lb,BorderLayout.NORTH);//添加带图片的标签
    		
    		exit = new JButton("退出系统");
    		enter=new JButton("进入系统");
    		enter.setBounds(200,440,120,50);
    		exit.setBounds(350, 440,120,50);
    		window.add(enter);
    		window.add(exit);
    		
    		addListened();
    		window.setVisible(true);
    		
    	}
    	
    	//添加按钮监听事件
    	public void addListened() {
    		enter.addActionListener(new ActionListener() {
    			
    			@Override
    			public void actionPerformed(ActionEvent e) {
    				System.out.println("按钮被按下");
    				//进入银行信息管理界面
    					new BankJPanel();
    					window.dispose();//关闭窗口
    				
    			}
    		});
    		exit.addActionListener(new ActionListener() {
    			
    			@Override
    			public void actionPerformed(ActionEvent arg0) {
    				window.dispose();//关闭窗口
    				
    			}
    		});
    	}
    	
    	
    }

运行结果：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMTgxNzcy_size_16_color_FFFFFF_t_70][]

2.实现银行信息管理系统的增、删、改功能

思路：要实现添加、删除、修改的操作就得增加监听事件，并且添加之前用flag判断是否有重复的用户，我用数组存的用户的相关信息，也可以用集合存储。

package BankSystem;
    
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.awt.event.MouseAdapter;
    import java.awt.event.MouseEvent;
    import java.awt.event.MouseListener;
    
    import javax.swing.JButton;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JOptionPane;
    import javax.swing.JPanel;
    import javax.swing.JScrollPane;
    import javax.swing.JTable;
    import javax.swing.JTextField;
    import javax.swing.ListSelectionModel;
    import javax.swing.table.DefaultTableModel;
    
    
    /*
     * 实现银行管理系统的主要功能
     * 增加、删除、修改、查询
     */
    public class BankJPanel {
    
    	private JFrame Bank;//主面板
    	private JPanel p1,p2;//两个界面
    	private JLabel lbTitle;//列表标签
    	private JTable table;//表格
    	String[][] data=null;
    	String[] cols = {"用户名","身份证","账户","开户行","存款余额"};
    	
    	private JLabel lbUser;//用户标签
    	private JLabel lbIdentify;//身份证标签
    	private JLabel lbAccount;//账户标签
    	private JLabel lbDeposit;//开户行标签
    	private JLabel lbRemain;//余额标签
    	
    	private JTextField tfUser;//用户文本框
    	private JTextField tfIdentify;//身份证文本框
    	private JTextField tfAccount;//账户文本框
    	private JTextField tfDeposit;//开户行文本框
    	private JTextField tfRemain;//余额文本框
    	
    	private JButton btAdd;//添加按钮
    	private JButton btDelete;//删除按钮
    	private JButton btUpdate;//修改按钮
    	
    	int index;//设置下标
    	String[] name;
    	String[] id;
    	String[] ac;
    	String[] de;
    	String[] re;
    	Listenered l;
    	
    	//构造器初始化 
    	public BankJPanel() {
    		
    		l = new Listenered();
    		index = 1;
    		data = new String[1][5];
    		name = new String[100];
    		id = new String[100];
    		ac = new String[100];
    		de = new String[100];
    		re = new String[100];
    		
    		//窗口初始化
    		Bank=new JFrame("银行信息管理系统");
    		Bank.setSize(600, 400);
    		Bank.setLocationRelativeTo(null);//居中
    		Bank.setResizable(false);
    		Bank.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    		Bank.setLayout(null);
    		
    		//表格标题
    		lbTitle=new JLabel("用户的基本信息");
    		lbTitle.setBounds(250, 20, 140, 25);
    		Bank.add(lbTitle);
    		
    		//表格添加与设置
    		table = new JTable();
    		String[][] data = new String[1][5];
    		data[0][0]=name[0]="小张";
    		data[0][1]=id[0]="123456789";
    		data[0][2]=ac[0]="123";
    		data[0][3]=de[0]="456";
    		data[0][4]=re[0]="789";
    		table = new JTable(data,cols);
    		table.getTableHeader().setReorderingAllowed(false);//不可改变列顺序
    		table.getTableHeader().setResizingAllowed(false);//不可改变列宽
    		table.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);//只能选一行
    		JScrollPane jp=new JScrollPane(table);//添加滚动效果
    		jp.setBounds(50, 50, 500, 200);
    		Bank.add(jp);
    		
    		//添加编辑区域的组件
    		lbUser = new JLabel("用户名",JLabel.RIGHT);
    		lbUser.setBounds(40, 265, 50, 25);
    		Bank.add(lbUser);
    		lbIdentify = new JLabel("身份证",JLabel.RIGHT);
    		lbIdentify.setBounds(210, 265, 50, 25);
    		Bank.add(lbIdentify);
    		lbAccount = new JLabel("账户",JLabel.RIGHT);
    		lbAccount.setBounds(370, 265, 50, 25);
    		Bank.add(lbAccount);
    		lbDeposit = new JLabel("开户行",JLabel.RIGHT);
    		lbDeposit.setBounds(40, 295, 50, 25);
    		Bank.add(lbDeposit);
    		lbRemain = new JLabel("存款余额",JLabel.RIGHT);
    		lbRemain.setBounds(200, 295, 70, 25);
    		Bank.add(lbRemain);
    		tfUser = new JTextField();
    		tfUser.setBounds(90, 265, 120, 25);
    		Bank.add(tfUser);
    		tfIdentify = new JTextField();
    		tfIdentify.setBounds(261, 265, 120, 25);
    		Bank.add(tfIdentify);
    		tfAccount = new JTextField();
    		tfAccount.setBounds(421, 265, 120, 25);
    		Bank.add(tfAccount);
    		tfDeposit = new JTextField();
    		tfDeposit.setBounds(90, 295, 120, 25);
    		Bank.add(tfDeposit);
    		tfRemain = new JTextField();
    		tfRemain.setBounds(271, 295, 120, 25);
    		Bank.add(tfRemain);
    		
    		//添加按钮
    		btAdd = new JButton("添加信息");
    		btAdd.setBounds(100, 330, 100, 25);
    		Bank.add(btAdd);
    		btUpdate = new JButton("修改信息");
    		btUpdate.setBounds(250, 330, 100, 25);
    		Bank.add(btUpdate);
    		btDelete = new JButton("删除信息");
    		btDelete.setBounds(400, 330, 100, 25);
    		Bank.add(btDelete);
    		
    		//给按钮添加监听事件
    		btAdd.addActionListener(l);
    		btDelete.addActionListener(l);
    		btUpdate.addActionListener(l);
    		
    		//鼠标表格监听
    		addListened();
    		Bank.setVisible(true);
    		
    	}
    	
    	//添加按钮监听事件
    	public void addListened() {
    		//表格的处理事件
    		table.addMouseListener(new MouseAdapter() {
    			
    			@Override
    			public void mouseClicked(MouseEvent arg0) {
    				int row = table.getSelectedRow();//获取表格中被选中的行
    				//设置文本框的内容
    				tfUser.setText(data[row][0]);
    				tfIdentify.setText(data[row][1]);
    				tfAccount.setText(data[row][2]);
    				tfDeposit.setText(data[row][3]);
    				tfRemain.setText(data[row][4]);
    			}
    		});
    	}
    
    		
    		//监听事件（java内部类）：实现监听接口
    		class Listenered implements ActionListener{
    
    			@Override
    			public void actionPerformed(ActionEvent e) {
    				//按钮被按下货点击时调用
    				// ActionEvent e--指代的是按下的辣个按钮
    				//e.getSource():获取按下的按钮
    				
    				if(e.getSource() == btAdd) {
    					
    					System.out.println("确认添加");
    					int flag=0;//标记是否有重复，添加不同的用户信息
    					if(!(tfUser.getText().equals(""))) {
    						
    						//获取用户输入的数据
    						name[index] = tfUser.getText();
    						id[index] = tfIdentify.getText();
    						ac[index] = tfAccount.getText();
    						de[index] = tfDeposit.getText();
    						re[index] = tfRemain.getText();
    						for (int i = 0; i < index; i++) {
    							if(id[index].equals(id[i])) {
    								flag=1;
    							}
    						}
    						
    						if(flag == 0) {
    							
    							index++;
    							sortMess();
    							JOptionPane .showMessageDialog(null, "添加成功","输入用户信息提示框",JOptionPane.INFORMATION_MESSAGE);
    							clear();
    						}else {
    							
    							/*
    							 * 弹出提示框：用户重复  跳转界面 
    							 */
    							JOptionPane .showMessageDialog(null, "用户已存在","输入用户信息提示框",JOptionPane.INFORMATION_MESSAGE);
    							clear();//清空文本框
    							
    						}
    						
    					}
    					
    					
    				}
    				
    				if(e.getSource() == btUpdate) {
    					
    					System.out.println("确认修改");
    					if(!(tfUser.getText().equals(""))) {
    						
    						//获取用户输入的数据
    						String user = tfUser.getText();
    						String identify = tfIdentify.getText();
    						String account = tfAccount.getText();
    						String deposit = tfDeposit.getText();
    						String remain = tfRemain.getText();
    						for (int i = 0; i < index; i++) {
    							if(identify.equals(id[i])) {
    								name[index] = user;
    								id[index] = identify;
    								ac[index] = account;
    								de[index] = deposit;
    								re[index] = remain;
    							}
    						}
    						sortMess();
    						JOptionPane .showMessageDialog(null, "修改成功","输入用户信息提示框",JOptionPane.INFORMATION_MESSAGE);
    						clear();
    					}
    				}
    				
    				if(e.getSource() == btDelete) {
    					System.out.println("确认删除");
    					if(!(tfUser.getText().equals(""))) {
    						
    						//获取用户输入的数据
    						String identify = tfIdentify.getText();
    						for (int i = 0; i < index-1; i++) {
    							if(identify.equals(id[i])) {
    								name[index] = name[index+1];
    								id[index] = id[index+1];
    								ac[index] = ac[index+1];
    								de[index] = de[index+1];
    								re[index] = re[index+1];
    							}
    						}
    						index = index-1;
    						sortMess();
    						JOptionPane .showMessageDialog(null, "删除成功","输入用户信息提示框",JOptionPane.INFORMATION_MESSAGE);
    						clear();
    					}
    				}
    				
    				
    			}
    			
    			
    			//创建一个方法把新的数组元素添加到表格中
    			public void sortMess() {
    				data = new String[index][5];
    				for (int i = 0; i < index; i++) {
    					data[i][0] = name[i];
    					data[i][1] = id[i];
    					data[i][2] = ac[i];
    					data[i][3] = de[i];
    					data[i][4] = re[i];
    				}
    				DefaultTableModel tableModel = new DefaultTableModel(data, cols);
    				table.setModel(tableModel);
    			}
    			
    			//清空文本框
    			public void clear() {
    				tfUser.setText(null);//清空用户文本框
    				tfIdentify.setText(null);//清空身份证文本框
    				tfAccount.setText(null);
    				tfDeposit.setText(null);
    				tfRemain.setText(null);
    			}
    			
    		}
    	
    	
    	public static void main(String[] args) {
    		new BankJPanel();
    
    	}
    
    }

运行结果：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMTgxNzcy_size_16_color_FFFFFF_t_70 1][]

[Fated-2 GitHub]: https://github.com/Fated-2/Java/tree/master/%E9%93%B6%E8%A1%8C%E4%BF%A1%E6%81%AF%E7%AE%A1%E7%90%86%E7%B3%BB%E7%BB%9F
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMTgxNzcy_size_16_color_FFFFFF_t_70]: /images/20220401/b8e4cf554eff48acbfd27469ad6bf2d6.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMTgxNzcy_size_16_color_FFFFFF_t_70 1]: /images/20220401/b8c954bbac57481caa03e83b34adaab2.png