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银行账户代码编写java,银行账户性质代码表
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用java编的银行账户系统代码
package pack.money.persistent;import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;import pack.money.entity.Client;
import pack.money.entity.ClientMessage;
public class ClientPersistent {
//private static int a=0;
private static String t,b;//t是password b是clinetname
private static ClientPersistent sp;
public static ClientPersistent getClientPersistent() {
if (sp == null) {
sp = new ClientPersistent();
}
return sp;
}
private ClientMessage getClientMessage(ResultSet rs) throws Exception{
ClientMessage student=new ClientMessage();
student.setMoney(rs.getFloat("money"));
student.setType(rs.getString("type"));
student.setClientName(rs.getString("ClientName"));
student.setTransactionID(rs.getInt("TransactionID"));
return student;
}
public Client login(Connection con,String ClientName,String password) throws Exception{
String sql="select balance,password,ClientName from Client where ClientName=? and password=?";
PreparedStatement ps=con.prepareStatement(sql);
ps.setString(1, ClientName);
ps.setString(2, password);
ResultSet rs=ps.executeQuery();
t=password;
b=ClientName;
System.out.println(t);
System.out.println(b);
if(rs.next()){
Client client=new Client();
client.setClientName(rs.getString("ClientName"));
client.setPassword(rs.getString("password"));
return client; }
throw new Exception("Can not login, the accountID or password has error. ");
} public void save(Connection con ,String money)throws Exception
{ // a++;
String s="save";
float g=Float.parseFloat(money);
String sql="update Client set balance=balance+? where ClientName=?";
String sql1="insert into ATMTransaction(ClientName,Type,money) values(?,?,?) ";
PreparedStatement ps=con.prepareStatement(sql);
PreparedStatement ps1=con.prepareStatement(sql1);
ps.setFloat(1, g);
ps.setString(2,b);
//ps1.setInt(1,a);
ps1.setString(1,b);
ps1.setString(2,s);
ps1.setFloat(3,g);
ps.executeUpdate();
ps1.executeUpdate();
}
public void withDraw (Connection con ,String money)throws Exception
{ //a++;
String s="WithDraw";
float x=Float.parseFloat(money);
String sql="update Client set balance=balance-? where ClientName=?";
String sql1="insert into ATMTransaction(ClientName,Type,money) values(?,?,?)";
PreparedStatement ps=con.prepareStatement(sql);
PreparedStatement ps1=con.prepareStatement(sql1);
ps.setFloat(1, x);
ps.setString(2,b);
//ps1.setInt(1,a);
ps1.setString(1,b);
ps1.setString(2,s);
ps1.setFloat(3,x);
ps.executeUpdate();
ps1.executeUpdate();
}
public String changePassword(Connection con, String OldPassWord,String newPassWord1,String newPassWord2)
throws Exception
{
if(t.equals(OldPassWord))
{
if(newPassWord1.equals(newPassWord2))
{
String sql="update Client set password=? where ClientName=?";
PreparedStatement ps=con.prepareStatement(sql);
ps.setString(1, newPassWord1);
ps.setString(2,b);
ps.executeUpdate();
String j="dsfasdf";
return j;
}
else
{System.out.print("确认密码错误！");br return null;}
}
else
{ return null;
}
}
public ArrayListClientMessage disPlayAll(Connection con ) throws Exception
{
String sql="select * from ATMTransaction where ClientName=? ";
PreparedStatement ps=con.prepareStatement(sql);
ps.setString(1,b);
System.out.println(b+"****b****");
ResultSet rs=ps.executeQuery();
ArrayListClientMessage message=new ArrayListClientMessage();
while(rs.next()){
message.add(this.getClientMessage(rs));
}
return message;
}
public float showBalance(Connection con ) throws Exception
{
String sql="select balance from Client where ClientName=?";
PreparedStatement ps=con.prepareStatement(sql);
ps.setString(1, b);
ResultSet rs=ps.executeQuery();
if(rs.next())
{
float s;
s=rs.getFloat("balance");
return s;
}
else return 0 ;
}
}
相关问答
Q1: java编写一个帐户类实现银行帐户的概念,创建帐户类的对象,完成存款与取款等操作.
其实你照着这些话一句句就已经写出来了。。。
public class BankAccount {
String account_number;
int leftmoney;
public BankAccount() {
// TODO Auto-generated constructor stub
}
public BankAccount(String account_number, int leftmoney) {
super();
this.account_number = account_number;
this.leftmoney = leftmoney;
}
public void savemoney(int money) {
leftmoney += money;
}
public void getmoney(int money) {
if (leftmoney money) {
leftmoney -= money;
} else {
System.out.println("账户余额不足");
}
}
public int getleftmoney() {
return leftmoney;
}
public static void main(String[] args) {
BankAccount ba = new BankAccount("123456", 500);
ba.savemoney(1000);
ba.getmoney(2000);
}
}
Q2: JAVA编写银行账户程序摸拟银行账户的存\取款操作
public class ATM {
public static void main(String[] args) {
// 开立帐号
Account account = new Account();
// 在 account 中存 10,000 元
account.setBalance(10000);
// 检查 account 中的存款
System.out.println("帐户原始金额 : " + account.getBalance() + " 元");
// 小明, 小华与小英一起对 account 进行提款的动作
WithDraw s1 = new WithDraw("小明", account, 5000); // 小明 在 account 中提 5000 元
WithDraw s2 = new WithDraw("小华", account, 2000); // 小华 在 account 中提 2000 元
WithDraw s3 = new WithDraw("小英", account, 4000); // 小英 在 account 中提 4000 元
s1.start();
s2.start();
s3.start();
}
}
//帐户
class Account {
private int balance; // 帐户馀额
public int getBalance() { // 取得帐户馀额
return balance;
}
public void setBalance(int money) { // 设定帐户馀额
balance = money;
}
// 提款方法
public void withDraw(Account account, int withdrawMoney) {
String tName = Thread.currentThread().getName(); // tName=提款人
System.out.println(tName + " 开始提款 ... ");
boolean withDrawStatus; // 提款状态 说明:false=提款失败, true=提款成功
synchronized(ATM.class) {
int tmpBalabce = account.getBalance(); // 取得最新帐户馀额
//用 for-loop 模拟提款时系统所花的时间
for(double delay=0;delay99999999;delay++) {
// ... 提款进行中 ...
}
tmpBalabce = tmpBalabce - withdrawMoney; // 最新帐户馀额 - 欲提款金额 (用来判断是否馀额足够的依据)
if (tmpBalabce 0) { // 判断是否馀额足够
withDrawStatus = false;
System.out.println("....................");
System.out.println(" 帐户馀额不足！");
System.out.println("....................");
} else {
withDrawStatus = true;
account.setBalance(tmpBalabce); // 回存account最後剩馀金额
}
}
System.out.println(tName + "的交易单:");
System.out.println("\t欲提款金额：" + withdrawMoney + "元");
System.out.println("\t帐户馀额：" + account.getBalance());
if(withDrawStatus == true){
System.out.println(tName + " 完成提款 ... ");
} else {
System.out.println(tName + " 提款失败 ... ");
}
System.out.println("-------------------------------");
}
}
// 提款类别
class WithDraw extends Thread {
private Account account; // 帐号
private int withdrawMoney; // 欲提款的金额
// tName:执行绪名称, account:Account物件名称, withdrawMoney:欲提款金额
public WithDraw(String tName, Account account, int withdrawMoney) {
setName(tName);
this.account = account;
this.withdrawMoney= withdrawMoney;
}
public void run() {
// 执行提款动作(account:帐号, withdrawMoney 欲提款金额)
account.withDraw(account, withdrawMoney); // 执行提款动作
}
}
Q3: 用java语言编写一个小型的银行系统代码
private int balance = 0;
private String username = "A";
private String password = "B";
public void bank() {
Scanner scan = new Scanner(System.in);
String temp;
while (true) {
System.out.println("输入账号：");
if (scan.hasNext()) {
temp = scan.next();
if (temp.equals(username)) {
break;
} else {
System.out.println("输入错误");
}
}
}
while (true) {
System.out.println("输入密码：");
if (scan.hasNext()) {
temp = scan.next();
if (temp.equals(password)) {
break;
} else {
System.out.println("输入错误");
}
}
}
System.out.println("登录成功");
while (true) {
System.out.println("输入操作：");
if (scan.hasNext()) {
temp = scan.next();
switch (temp) {
case "存款":
int x = 0;
while (true) {
System.out.println("输入存款金额：");
if (scan.hasNextInt()) {
x = scan.nextInt();
break;
} else {
System.out.println("输入错误");
scan.next();
}
}
balance += x;
break;
case "取款":
int y = 0;
while (true) {
System.out.println("输入取款金额：");
if (scan.hasNextInt()) {
y = scan.nextInt();
if (balance y) {
System.out.println("余额不足");
continue;
}
break;
} else {
System.out.println("输入错误");
scan.next();
}
}
balance -= y;
break;
case "余额":
System.out.println("余额：" + balance);
break;
case "终止":
System.exit(0);
default:
System.out.println("未知操作");
}
}
}
Q4: 使用JAVA编写一个简单的银行存取款程序
package com.lw.thread;
/*
银行账户类Account（不能透支），
包含账号id（10~16位数字），密码password（6位数字），户主姓名name，余额balence
*/
public class Account {
private String id;
private int password;
private String name;
private double balence;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public int getPassword() {
return password;
}
public void setPassword(int password) {
this.password = password;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public double getBalence() {
return balence;
}
public void setBalence(double balence) {
this.balence = balence;
}
/*
* 默认构造账户信息为：1111111111111111,666666，钱三多，888888.88。
*/
public Account() {
super();
this.id = "1111111111111111";
this.password = 666666;
this.name = "钱三多";
this.balence = 888888.88;
}
/*
* 另一个构造方法带4个参数分别初始化4个属性（带数据有效性验证）。
*/
public Account(String id, int password, String name, double balence) {
this.id = id;
this.password = password;
this.name = name;
this.balence = balence;
}
/*
* 查询余额
*/
public static double selectMoney(Account account) {
return account.getBalence();
}
/*
* 存钱
*/
public static String setMoney(Account account, double balence) {
if (balence 0) {
return "存钱失败，请正确放入！";
}
double d = balence + account.getBalence();
account.setBalence(d);
return "您存入了" + balence + "元，现账户余额为+" + d;
}
/*
* 取钱
*/
public static String getMoney(Account account, double balence) {
double d = account.getBalence();
if (balence d) {
return "您的余额不足！";
}
account.setBalence(d - balence);
return "您取出了" + balence + "元，现账户余额为+" + account.getBalence();
}
}
