java设计一个简易的银行系统

package b02;
import java.util.*;
public class BankTransaction{
private String accountid;
private String password;
private double balance;
private int people = 0;
static int i;
static String restore1[]=new String[100];
static String restore2[]=new String[100];
static String restore3[]=new String[100];
public void createAccount(){
int n=99;
for (i=0;i<n;i++) {
System.out.print("目前服务：新建账号中\n请首先输入\n账号名：");
Scanner input=new Scanner(System.in);
String accountid=input.next();
restore1[i]=accountid;
System.out.print("请设置\n密码：");
String password=input.next();
restore2[i]=password;
System.out.print("请输入存款金额：");
String balance=input.next();
restore3[i]=balance;
System.out.print("目前服务：创建账户中\n您确定要创建吗？如果是请按1，如果不是请按2。

");
int j=input.nextInt();
switch(j){
case 1:{
System.out.print("\n新建账号名为:"+accountid+"\n"+"密码为:"+password+"\n"+"请输入开户金额:"+balance+"\n账号创建成功，再见" +
"。

");
break;
}
case 2:
System.out.print("创建任务已取消，谢谢使用，再见。

");
}
break;
}
}
public void deleteAccount(){
Scanner input=new Scanner(System.in);
System.out.print("目前服务：注销账户中\n您确定要注销吗？如果不是请按1，如果是请按2。

");
int t=input.nextInt();
switch(t){
case 1:{
System.out.print("任务已取消，请关闭窗口。

");
break;
}
case 2:
System.out.print("注销账号正在进行中:\n请输入原账号名: ");
String name=input.next();
System.out.print("请输入原密码: ");
String secret=input.next();
System.out.print("此账号已注销，谢谢使用。

\n");
}
}
public void deposit(){
String miMa;
double money = 0;
Scanner scanner = new Scanner(System.in);
System.out.print("目前服务：汇入金额中\n请输入存款金额: ");
Scanner input=new Scanner(System.in);
double j=input.nextDouble();
for(i = 0;i<people;i++)
{
if(restore3[i].equals(people))
{
System.out.print("请输入密码：");
miMa = scanner.next();
if(restore2[i].equals(miMa))
restore3[i] = j + restore3[i] ;
System.out.println("您的账户所剩余额为：" +this.restore3[i]+"元" +
"");
System.out.print("已存入金额："+balance);
}
}
}
public void withdraw(){
double money;
System.out.print("\n目前服务：取出金额中\n请输入取款金额: ");
Scanner input=new Scanner(System.in);
double j=input.nextDouble();
money=j;
System.out.print("\n已取出金额:: "+money);
}
public void show(){
String person;
String miMa;
double money;
int i;
people++;
Scanner scanner = new Scanner(System.in);
System.out.print("请输入用户：");
person = scanner.next();
for(i = 0;i<people;i++)
{
if(restore1[i].equals(person) )
{
System.out.print("请输入密码：");
miMa = scanner.next();
if(restore2[i].equals(miMa))
System.out.println("您的账户所剩余额为：" +this.restore3[i]+"元" +
"");
else
{
System.out.println("密码错误！！！");
}
break;
}
}
if(i == people)
System.out.println("该账号不存在！");
}
public static void main (String[] args){
int t;
BankTransaction b=new BankTransaction();
Scanner scanner = new Scanner(System.in);
do
{
System.out.println("*********************");
System.out.println("请选择您需要的服务：");
System.out.println("开户帐号，请输入1");
System.out.println("注销帐号，请输入2");
System.out.println("存款，请输入3");
System.out.println("取款，请输入4");
System.out.println("查询余额，请输入5");
System.out.println("*********************");
t = scanner.nextInt();
switch(t)
{
case 1:
b.createAccount();
break;
case 2:
b.deleteAccount();
break;
case 3:
double money;
b.deposit();
break;
case 4:
b.withdraw();
break;
case 5:
b.show();
}
}while(t>0&&t<5);
}
}。