Training title 5 : simulated bank deposit and withdrawal services
Training Objective: The main function of this project is to simulate the bank's deposit and withdrawal services, when a user logs need to determine the bank card number and bank card password, when the input number and password are correct, the login is successful, suggesting that the account name currently logged , and enter the next type of operation. It includes four types of operations (deposits, withdrawals, balance, exit), the choice of deposits or withdrawals, deposits and withdrawals will operate at this time to enter the amount of access, and the correct amount of addition and subtraction; balance is selected, displays the current balance of the account; will exit the entire system lost exit. Project flow chart is as follows:
Balance forget to save the file, and it put the code Tieshanglai
package exam5;
import java.awt.*;
import java.io.*;
import javax.swing.*;
public class Bank
{
static int temp=10000;
static int tm=0;/*filename.createNewFile()
File filename=new File("D:\\Eclipse Workspace\\Training\\user\\"+shuru1.getText()+"\\name.txt");fileID.mkdirs();
File fileID=new File("D:\\Eclipse Workspace\\Training\\user\\"+shuru1.getText());if(!fileID.exists())*/
private static void createAndShowGUI()
{
JFrame f =new JFrame("中国银行");
f.setSize(730, 500);
f.setLocation(400,300);
JTextArea showArea = new JTextArea(1,35);
f.setResizable(true);//窗口是否可以尺寸大小
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JLabel l1 = new JLabel();//l1标签
ImageIcon icon = new ImageIcon("D:\\Eclipse Workspace\\Training\\img\\1.jpg");
l1.setIcon(icon);//l1为图片标签
JButton b1 = new JButton("登 录");
JButton b2 = new JButton("退 出");
JButton b3 = new JButton("注 册");
JPanel panel = new JPanel();
JLabel zhanghao = new JLabel("账号：");
JLabel mima = new JLabel("密码：");
JTextArea ja=new JTextArea(2,10);
JTextField shuru1= new JTextField (20);
JTextField shuru2= new JTextField (20);
panel.add(zhanghao);
panel.add(shuru1);
panel.add(mima);
panel.add(shuru2);
panel.add(b1);
panel.add(b3);
panel.add(b2);
panel.add(showArea);
panel.add(ja);
f.add(l1,BorderLayout.PAGE_START);
f.add(panel,BorderLayout.CENTER);
f.setVisible(true);
b1.addActionListener(e ->
{ String yonghu = "D:\\Eclipse Workspace\\Training\\user\\user.txt";
String key = "D:\\Eclipse Workspace\\Training\\user\\key.txt";
//@SuppressWarnings("unused")
String content1 = shuru1.getText();
//@SuppressWarnings("unused")
String content2 = shuru2.getText();
try(FileReader reader1 = new FileReader(yonghu);
FileReader reader2 = new FileReader(key);
BufferedReader br1 = new BufferedReader(reader2);
BufferedReader br = new BufferedReader(reader1)
)
{
String line;
String line1;
line1=br1.readLine();
while ((line=br.readLine()) != null)
{
if((line.equals(content1))&&(line1.equals(content2)))
{f.setVisible(false);
denglu();}
else
showArea.append("用户名或密码输入错误");
}
}
catch (IOException e1)
{e1.printStackTrace();}
});
b2.addActionListener(e ->
{
System.exit(0);
});
b3.addActionListener(e ->
{
panel.removeAll();//移除布局
JLabel zhanghao1 = new JLabel("账号：");
JLabel mima1 = new JLabel("密码：");
JTextField shuru3= new JTextField (20);
JTextField shuru4= new JTextField (20);
JButton zhuce = new JButton("完 成");
JButton back = new JButton("返 回");
panel.add(zhanghao1);
panel.add(shuru3);
panel.add(mima1);
panel.add(shuru4);
panel.add(zhuce);
panel.add(back);
panel.validate();//刷新
panel.repaint();//重画
zhuce.addActionListener(g ->
{
String content1 = shuru3.getText();//获取注册名字
String content2 = shuru4.getText();//获取注册密码
File fp=new File("D:\\Eclipse Workspace\\Training\\user\\user.txt");
try {
PrintWriter pfp = new PrintWriter(fp);
pfp.print(content1);
pfp.close();
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
//BufferedReader bu = new BufferedReader(new InputStreamReader());
File fp1=new File("D:\\Eclipse Workspace\\Training\\user\\key.txt");
try {
PrintWriter pfp = new PrintWriter(fp1);
pfp.print(content2);
pfp.close();
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
});
back.addActionListener(w ->
{
panel.removeAll();//移除布局
panel.add(zhanghao);
panel.add(shuru1);
panel.add(mima);
panel.add(shuru2);
panel.add(b1);
panel.add(b3);
panel.add(b2);
panel.add(showArea);
f.add(l1,BorderLayout.PAGE_START);
f.add(panel,BorderLayout.CENTER);
f.setVisible(true);
panel.validate();//刷新
panel.repaint();//重画
});
});
}
private static void denglu()
{
JFrame f =new JFrame("中国银行");
f.setSize(580, 500);
f.setLocation(400,300);
JTextArea showArea = new JTextArea(50,50);
JLabel l1 = new JLabel();//l1标签
ImageIcon icon = new ImageIcon("D:\\Eclipse Workspace\\Training\\img\\2.jpg");
l1.setIcon(icon);
f.setResizable(true);//窗口是否可以尺寸大小
f.setVisible(true);
JTextField input = new JTextField(20);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JLabel label = new JLabel("欢迎,请在选择你需要的操作");
JButton b1 = new JButton("存 款");
JButton b2 = new JButton("取 款");
JButton b3 = new JButton("余 额");
JButton b4 = new JButton("退 出");
JPanel panel = new JPanel();
f.add(panel);
panel.add(l1);
panel.add(label);
panel.add(b1);
panel.add(b2);
panel.add(b3);
panel.add(b4);
panel.add(input);
panel.add(showArea);
b1.addActionListener(e ->//存款
{
String tem = input.getText();
if((tem!=null) && (!tem.trim().equals("")))
{
int j= Integer.parseInt( tem);
temp=temp+j;
showArea.setText(" ");
showArea.append("存款成功，当前余额为"+temp+"!");
}
else
{
showArea.setText(" ");
showArea.append("错误！重输！");
}input.setText("");
});
b2.addActionListener(w ->//取款
{
String tem = input.getText();
if((tem!=null) && (!tem.trim().equals("")))
{
int j= Integer.parseInt( tem);
if(j>temp)
{
showArea.setText(" ");
showArea.append("你哪有这么多的钱来取哦！");
}else
{
temp=temp-j;
showArea.setText(" ");
showArea.append("取款成功，当前余额为"+temp+"!");
}
}
else
{
showArea.setText(" ");
showArea.append("错误！重输！");
}
input.setText("");
});
b3.addActionListener(w ->
{
showArea.setText(" ");
showArea.append("当前余额为"+temp+"!\n");
});
b4.addActionListener(w ->
{
f.setVisible(false);
createAndShowGUI();
});
}
private static void setDefaultCloseOperation(int disposeOnClose) {
// TODO Auto-generated method stub
}
public static void main (String[] args)
{
SwingUtilities.invokeLater(Bank::createAndShowGUI);
}
}
