用JAVA编写一个银行信息管理系统
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：
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：
查看15道真题和解析
