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java程序设计银行代码 java设计一个bank类实现银行
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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");
}
}
}
谁帮忙用JAVA设计一个银行类啊！要代码，在下感激不尽
/**
* @author
* @version 创建时间java程序设计银行代码：Oct 15, 2009
* 类说明 About Bank
*/
public class Bank {
private String banksName;
private String banksAdds;
private String banksOther;
//等等......
public Bank() {
super();
}
public Bank(String banksName, String banksAdds, String banksOther) {
super();
this.banksName = banksName;
this.banksAdds = banksAdds;
this.banksOther = banksOther;
}
/**
* @return the banksName
*/
public String getBanksName() {
return banksName;
}
/**
* @param banksName the banksName to set
*/
public void setBanksName(String banksName) {
this.banksName = banksName;
}
/**
* @return the banksAdds
*/
public String getBanksAdds() {
return banksAdds;
}
/**
* @param banksAdds the banksAdds to set
*/
public void setBanksAdds(String banksAdds) {
this.banksAdds = banksAdds;
}
/**
* @return the banksOther
*/
public String getBanksOther() {
return banksOther;
}
/**
* @param banksOther the banksOther to set
*/
public void setBanksOther(String banksOther) {
this.banksOther = banksOther;
}
}
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java程序设计银行代码！");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 ;
}
}
用JAVA编程设计一个银行账户类，其中包括以下内容，并用字符界面模拟存款和取款过程。
import java.util.Scanner;
public class ZH {
private String zh;//账户
private String password;//密码
private String openTime;//开户时间
private String sfz;//身份证号
private double je;//存款金额
public String getZh() {
return zh;
}
public void setZh(String zh) {
this.zh = zh;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getOpenTime() {
return openTime;
}
public void setOpenTime(String openTime) {
this.openTime = openTime;
}
public String getSfz() {
return sfz;
}
public void setSfz(String sfz) {
this.sfz = sfz;
}
public double getJe() {
return je;
}
public void setJe(double je) {
this.je = je;
}
//存款方法
public void ck(double je){
this.je=this.je+je;//存入java程序设计银行代码的金额加上原有的金额
}
//取款方法
public void qk(double je){
if(jethis.je){//取款金额大于余额
System.out.println("存款余额不足");
}else{
this.je=this.je-je;//原有的金额减去取出的金额
}
}
public static void main(String[] args) {
ZH zh = new ZH();//初始化一个账户信息
zh.setJe(10000.0);//向zh账户添加余额
zh.setOpenTime("2013.12.3");//向zh账户添加开发时间
zh.setPassword("123456");//向zh账户添加密码
zh.setSfz("123456789");//向zh账户添加身份证
zh.setZh("zhangsan");//向zh账户添加账号
System.out.println("欢迎光临模拟银行");
Scanner scan = new Scanner(System.in);
int count=0;//记录输入错误的次数
while(1==1){//循环
System.out.println("请输入账号");
String zhm=scan.next();
System.out.println("请输入密码");
String mm=scan.next();
if(zhm.equals(zh.getZh()) mm.equals(zh.getPassword())){//输入的信息与zh账户信息的密码和账号一致
while(1==1){
System.out.println("当前余额为："+zh.getJe()+"元。请选择操作：1.存款；2.取款；3.退出（只能输入数字）");
String cz=scan.next();
switch (Integer.parseInt(cz)) {
case 1:
System.out.println("请输入存款金额（输入小数）");
double ckje=scan.nextDouble();
zh.ck(ckje);
System.out.println("实施存款："+ckje+"元java程序设计银行代码，当前余额为"+zh.getJe()+"元");
break;
case 2:
System.out.println("请输入取款金额（输入小数）");
double qkje=scan.nextDouble();
zh.qk(qkje);
System.out.println("实施取款："+qkje+"元java程序设计银行代码，当前余额为"+zh.getJe()+"元");
break;
case 3:
break;
default:
System.out.println("暂无此功能");//输入1或者2、3以外的操作
break;
}
if("3".equals(cz)){
break;
}
}
System.out.println("退出操作");
break;
}else{
if(count=3){
System.out.println("已输入错误三次，账号被锁");
break;//结束循环
}else{
System.out.println("账号或密码错误，请重新输入");
count++;//错误一次count+1
continue;//进入下次循环
}
}
}
}
}
JAVA 简单银行系统的代码
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class AccountDemo {
public static double MONEY = 0;// 初始化金额是100元。
public static void main(String[] args) {
final String USER_NAME = "zhangsan";// 用户名
final String PASSWORD = "123456";// 密码
while (true) {
System.out.print("请输入用户名：");
String user_name = getString();
System.out.print("请输入密码：");
String password = getString();
if (user_name != null user_name.equals(USER_NAME)
password != null password.equals(PASSWORD)) {
System.out.println("登陆成功！你要干什么？");
while (true) {
System.out.println("1：存款");
System.out.println("2：取款");
System.out.println("3：查询余额");
System.out.println("q：退出程序");
System.out.print("请选择：");
String userIn = getString();
int in = 0;
if (userIn != null userIn.equals("1")) {
in = Integer.parseInt(userIn);
} else if (userIn != null userIn.equals("2")) {
in = Integer.parseInt(userIn);
} else if (userIn != null userIn.equals("3")) {
in = Integer.parseInt(userIn);
} else if (userIn != null
userIn.trim().toUpperCase().equals("Q")) {
in = 4;
} else {
System.out.println("你输入的指令不正确！请重新输入。");
continue;
}
switch (in) {
case 1:
double add_money = 0;
while (true) {
System.out.print("请输入你要存入的金额：");
try {
add_money = Double.parseDouble(getString());
} catch (Exception e) {
System.out.println("金额输入不正确！");
continue;
}
break;
}
MONEY += add_money;
System.out.println("存入的金额是" + add_money
+ "\r\n请选择你要的操作：");
break;
case 2:
double money = 0;
while (true) {
System.out.print("请输入你要取出的金额：");
try {
money = Double.parseDouble(getString());
} catch (Exception e) {
System.out.println("金额输入不正确！");
continue;
}
if (money MONEY) {
System.out.println("取出的金额大于现有存款，请重新输入要取出的金额！");
continue;
}
break;
}
MONEY -= money;
System.out.println("取出的金额是" + money + "\r\n请选择你要的操作：");
break;
case 3:
System.out.println("你的余额是：" + MONEY + "\r\n请选择你要的操作：");
break;
case 4:
System.out.println("程序退出！");
return;
}
}
} else {
System.out.println("错误：用户名与密码不匹配！\r\n");
System.out.println("按任意键:重新输入用户名和密码。");
System.out.println("q:退出程序。");
System.out.print("请选择:");
String in = getString();
if (in.trim().toUpperCase().equals("Q")) {
break;
}
}
}
}
public static String getString() {
String str = null;
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
try {
str = br.readLine();
} catch (IOException e) {
e.printStackTrace();
}
return str;
}
}
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