大家好，我对Bank.java有疑问
我有这样的问题：
银行系统需要存储有关银行Accounts和Customers的信息。银行支持两种不同类型的帐户（支票和储蓄）。所有银行帐户都有帐户Number，余额和date opened。为所有帐户makeDeposit()和makeWithdrawal()定义了两个操作。检查帐户具有检查样式和最小余额的附加属性。保存帐户具有额外的利率属性和calculateInterest()的操作。
所有客户都有name，address和phone number。此外，客户可以拥有他所需的帐户数量
上述规范已按照以下新要求进行了扩展：有两种特殊类型的客户（Personal和Commercial）。商业客户具有信用评级，联系人和联系人电话的附加属性。个人客户拥有home phone和work phone的属性。此外，扩展模型以显示银行有多个分支，每个帐户由一个分支提供服务。当然，每个分支都有很多账户
创建一个简单的测试程序（不需要使用GUI或异常处理，只需使它非常简单）。该测试程序的名称为Bank.java，它应该使用上述类。 Bank.java应声明ArrayList以保留所有银行帐户。测试程序应该利用系统功能;以下是演示系统功能的示例操作：
一个。为芝加哥分公司的商业客户创建一个支票帐户，并将其添加到阵列列表中
湾创建一个单独的方法来显示客户信息和帐户余额。代表您在上一步中创建的客户调用该方法
C。将100美元存入您在“a”中创建的帐户，然后显示新信息
d。为某个分支机构中的单个客户创建一个储蓄帐户，初始余额为100美元，利率为10％，并将其添加到阵列列表中。
即显示储蓄账户信息
F。向储蓄账户存入100美元存款，计算利息，然后显示信息
G。实施您选择的其他操作！
这是我的代码我已经写了除Bank.java课程以外的所有内容，我不知道应该从哪里开始或者如何去做，请任何人帮助我或者告诉我我应该怎么做。
在这里你可以找到我的代码：
public abstract class Account{
protected String accountNumber;
protected double balance;
protected String dateOpened;
protected Customer state;
protected Customer customer;
public Account(){
this.accountNumber = "";
if (balance < 0)
balance = 0.0;
this.balance = 0.0;
this.dateOpened = "";
state = null;
customer = null;
}
public Account (String accountNumber,double balance,String dateOpened, Customer state,Customer customer){
this.accountNumber = accountNumber;
this.balance = balance;
this.dateOpened = dateOpened;
this.state = state;
this.customer = customer;
}
public void setCustomer(Customer customer){
this.customer = customer;
}
public Customer getCustomer(){
return customer;
}
public void setState(Customer state){
this.state = state;
}
public Customer getState(){
return state;
}
public void setAccountNumber(String accountNumber){
this.accountNumber = accountNumber;
}
public String getAccountNumber(){
return accountNumber;
}
public void setBalance(double balance){
this.balance = balance;
}
public double getBalance(){
return balance;
}
public void setDateOpened(String dateOpened){
this.dateOpened = dateOpened;
}
public String getDateOpened(){
return dateOpened;
}
public void makeDeposit(double depositAmount) {
balance = balance + depositAmount;
}
public void makeWithdrow(double withdrowAmount){
balance = balance - withdrowAmount;
}
public String toString(){
String output = "";
output += "\nCustomer State: " + this.state;
output += "\nCustomer Customer: " + this.customer;
output += "\nAccount Number: " + this.accountNumber;
output += "\nAccount Balance: " + this.balance;
output += "\nAccount Date Opened: " + this.dateOpened;
return output;
}
}
public class Customer {
protected String name;
protected String address;
protected String phone;
public Customer(){
this.name = "";
this.address = "";
this.phone = "";
}
public Customer(String name,String address,String phone){
this.name = name;
this.address = address;
this.phone = phone;
}
public void setName(String name){
this.name = name;
}
public String getName(){
return name;
}
public void setAddress(String address){
this.address = address;
}
public String getAddress(){
return address;
}
public void setPhone(String phone){
this.phone = phone;
}
public String getPhone(){
return phone;
}
public String toString(){
String output = "";
output += "\nCustomer Name: " + this.name;
output += "\nCustomer Address: " + this.address;
output += "\nCustomer Phone: " + this.phone;
return output;
}
}
public class CheckingAcount extends Account {
private String checkStyle;
private String minumumBalance;
public CheckingAcount(){
this.checkStyle = "";
this.minumumBalance = "";
}
public CheckingAcount(String checkStyle,String minumumBalance){
this.checkStyle = checkStyle;
this.minumumBalance = minumumBalance;
}
public CheckingAcount(String checkStyle,String minumumBalance,String accountNumber,double balance,String dateOpened,Customer state,Customer customer){
super(accountNumber,balance,dateOpened,state,customer);
this.checkStyle = checkStyle;
this.minumumBalance = minumumBalance;
}
public CheckingAcount(String accountNumber,double balance,String dateOpened,Customer state,Customer customer){
super(accountNumber,balance,dateOpened,state,customer);
}
public void setCheckStyle(String checkStyle){
this.checkStyle = checkStyle;
}
public String getCheckStyle(){
return checkStyle;
}
public void setMinumumBalance (String minumumBalance){
this.minumumBalance = minumumBalance ;
}
public String getMinumumBalance(){
return minumumBalance ;
}
public String toString(){
String output = "";
output += "\nAccount Number: " + this.accountNumber;
output += "\nAccount Balance: " + this.balance;
output += "\nAccount Date Opened: " + this.dateOpened;
output += "\nChecking Account Check Style: " + this.checkStyle;
output += "\nChecking Account Minumum Balance: " + this.minumumBalance;
return output;
}
}
public class SavingAccount extends Account {
private double intrestRate;
public SavingAccount(){
this.intrestRate = 0.0;
}
public SavingAccount(double intrestRate){
if (intrestRate < 0)
intrestRate = 0.0;
this.intrestRate = intrestRate;
}
public SavingAccount(double intrestRate, String accountNumber,double balance,String dateOpened,Customer state,Customer customer){
super(accountNumber,balance,dateOpened,state,customer);
if (intrestRate < 0)
intrestRate = 0.0;
this.intrestRate = intrestRate;
}
public SavingAccount(String accountNumber,double balance,String dateOpened,Customer state,Customer customer){
super(accountNumber,balance,dateOpened,state,customer);
}
public void setIntrestRate(double intrestRate){
this.intrestRate = intrestRate;
}
public double getIntrestRate(){
return intrestRate;
}
public double calculateInterest() {
return intrestRate;
}
public String toString(){
String output = "";
output += "\nAccount Number: " + this.accountNumber;
output += "\nAccount Balance: " + this.balance;
output += "\nAccount Date Opened: " + this.dateOpened;
output += "\nSavingAccount Intrest Rate: " + this.intrestRate;
return output;
}
}
public class Personal extends Customer {
private String homePhone;
private String workPhone;
public Personal(){
this.homePhone = "";
this.workPhone = "";
}
public Personal(String homePhone,String workPhone){
this.homePhone = homePhone;
this.workPhone = workPhone;
}
public Personal(String homePhone,String workPhone,String name,String address,String phone){
super(name,address,phone);
this.homePhone = homePhone;
this.workPhone = workPhone;
}
public Personal(String name,String address,String phone){
super(name,address,phone);
}
public void setHomePhone(String homephone){
this.homePhone = homephone;
}
public String getHomePhone(){
return homePhone;
}
public void setWorkPhone(String workPhone){
this.workPhone = workPhone;
}
public String getWorkPhone(){
return workPhone;
}
public String toString(){
String output = "";
output += "\nCustomer Name: " + this.name;
output += "\nCustomer Address: " + this.address;
output += "\nCustomer Phone: " + this.phone;
output += "\nPersonal Home Phone: " + this.homePhone;
output += "\nPersonal Work Phone: " + this.workPhone;
return output;
}
}
public class Commercial extends Customer {
private double cridetRating;
private String contactPerson;
private String contactPersonPhone;
public Commercial(){
this.cridetRating = 0.0;
this.contactPerson = "";
this.contactPersonPhone = "";
}
public Commercial(double cridetRating,String contactPerson,String contactPersonPhone){
this.cridetRating = cridetRating;
this.contactPerson = contactPerson;
this.contactPersonPhone = contactPersonPhone;
}
public Commercial (double cridetRating,String contactPerson,String contactPersonPhone,String name,String address, String phone){
super(name,address,phone);
this.cridetRating = cridetRating;
this.contactPerson = contactPerson;
this.contactPersonPhone = contactPersonPhone;
}
public Commercial (String name, String address, String phone){
super (name,address,phone);
}
public void setCridetRating(double cridetRating){
this.cridetRating = cridetRating;
}
public double getCridetRating(){
return cridetRating;
}
public void setContactPerson(String contactPerson){
this.contactPerson = contactPerson;
}
public String getContactPerson(){
return contactPerson;
}
public void setContactPersonPhone(String contactPersonPhone){
this.contactPersonPhone = contactPersonPhone;
}
public String getContactPersonPhone(){
return contactPersonPhone;
}
public String toString(){
String output = "";
output += "\nCustomer Name: " + this.name;
output += "\nCustomer Address: " + this.address;
output += "\nCustomer Phone: " + this.phone;
output += "\nCommercial Cridet Rating: " + this.cridetRating;
output += "\nCommercial Contact Person: " + this.contactPerson;
output += "\nCommercial Contact Person Phone: " + this.contactPersonPhone;
return output;
}
}
答案 0 :(得分：0)
看起来你的班级对象正朝着正确的方向前进。当你认为自己陷入困境时，我们仍然可以继续前进。
提示：Commerical与Non-Commerical在Account类对象上尝试true / false属性，应该不需要多个列表，但它确实会略微增加复杂性。把它放在这里创造了你所寻找的关系。我相信。