public abstract class BankAccount
{
private String firstName;
private String surname;
private static int nxtID = 1000;
private int accNo;
private String address;
private String phnNo;
protected double overdraftLimit;
// private PassBookAccount p;
// private InvestmentAccount i;
public BankAccount(String f,String l,String ad,String p)
{
this.accNo = nxtID++;
this.firstName = f;
this.surname = l;
this.address = ad;
this.phnNo = p;
this.overdraftLimit = 1000;
}
public String getfName()
{
return this.firstName;
}
public String getsName()
{
return this.surname;
}
public String getPhn()
{
return this.phnNo;
}
public int getAccNo()
{
return this.accNo;
}
public String getAddress()
{
return this.address;
}
public abstract void withdraw(double d);
public abstract void deposit(double d);
public void updateOverDraft(double ol)
{
this.overdraftLimit = ol;
}
@Override
public String toString()
{
return "\n#Account NO\t\t#First Name\t\t#Surname\t\t#Phone No\t\t#Address\n" + this.accNo+ "\t\t" +this.firstName
+"\t\t" + this.surname + "\t\t" + this.phnNo + "\t\t" + this.address ;
}
}
public abstract class SavingsAccount extends BankAccount
{
private double WITHDRAW_FEE = 5.00;
public SavingsAccount(String f,String l,String ad,String p)
{
super(f,l,ad,p);
}
public abstract void addInterest();
public double getWithFee()
{
return this.WITHDRAW_FEE;
}
}
public class ChequeAccount extends BankAccount
{
private double openingbalance;
//private double overdraftLimit;
private double currentBal;
public ChequeAccount(String f,String s,String ad,String p,double op,double ol)
{
super(f,s,ad,p);
this.openingbalance = op;
if(ol > super.overdraftLimit)
{
super.overdraftLimit = ol;
}
this.currentBal = this.openingbalance;
}
public double getCurrentBal() {
return currentBal;
}
public void setCurrentBal(double currentBal) {
this.currentBal = currentBal;
}
@Override
public void deposit(double d)
{
this.currentBal += d;
JOptionPane.showMessageDialog(null, "Your account balance is $:" + this.currentBal );
}
@Override
public void withdraw(double d)
{
double maxOverDraft = -(super.overdraftLimit);
double tempBal = this.currentBal;
tempBal -= d;
if(tempBal >= maxOverDraft)
{
this.currentBal = tempBal;
JOptionPane.showMessageDialog(null, "Your account balance is $:" + this.currentBal);
}
else
{
JOptionPane.showMessageDialog(null, "Your don't have sufficient money!!");
}
}
public String toString()
{
return super.toString() + "\nCurrent Balance:" + this.currentBal + "\nOverdraft Limit:" + this.overdraftLimit+"\n";
}
}
public class PassBookAccount extends SavingsAccounts
{
private double passInterest = 0.05;
private double openingBlance;
private double currentBalance;
public PassBookAccount(String f,String l,String ad,String p,double op)
{
super(f,l,ad,p);
this.openingBlance = op;
this.currentBalance = this.openingBlance;
}
@Override
public void addInterest()
{
this.currentBalance += this.currentBalance * this.passInterest;
}
public double getBalance()
{
return this.openingBlance;
}
@Override
public void deposit(double d)
{
this.currentBalance += d;
JOptionPane.showMessageDialog(null, "Your account balance is $:" + this.currentBalance );
}
@Override
public void withdraw(double d)
{
if(this.currentBalance > d)
{
this.currentBalance -= d + super.getWithFee();
JOptionPane.showMessageDialog(null, "Your account balance is $:" + this.currentBalance );
}
else
{
JOptionPane.showMessageDialog(null, "Your don't have sufficient money!!");
}
}
public double getPassInt()// retun PassbookAccount interest rate;
{
return this.passInterest;
}
public String toString()
{
return super.toString() + "\nCurrent Balance:" + this.currentBalance + "\n";
}
}
public class InvestmentAccount extends SavingsAccount
{
private double investInterest = 0.06;
private double openingBlance;
private double currentBal;
private double minDep;
private double minWith;
public InvestmentAccount(String f,String s,String ad,String p,double op)
{
super(f,s,ad,p);
this.openingBlance = op;
this.currentBal = this.openingBlance;
this.minDep = 1000;
this.minWith = 1000;
}
@Override
public void deposit(double d)
{
this.currentBal += d;
JOptionPane.showMessageDialog(null, "Your account balance is $:" + this.currentBal );
}
@Override
public void withdraw(double d)
{
if(this.currentBal > d)
{
this.currentBal -= d + super.getWithFee();
JOptionPane.showMessageDialog(null, "Your account balance is $:" + this.currentBal );
}
else
{
JOptionPane.showMessageDialog(null, "Your don't have sufficient money!!");
}
}
@Override
public void addInterest()
{
if(this.currentBal > 100000)
{
this.investInterest = 0.08;
this.currentBal += this.currentBal * this.investInterest;
}
else
{
this.currentBal += this.currentBal * this.investInterest;
}
}
public double getMinDep()
{
return this.minDep;
}
public double getMinWith()
{
return this.minWith;
}
public double getInvInt() //return Investment account interest rate
{
return this.investInterest;
}
public String toString()
{
return super.toString() + "\nCurrent Balance:" + this.currentBal + "\n";
}
}
import javax.swing.*;
import java.util.*;
public class Interface
{
private static ArrayList<BankAccount> bnk = new ArrayList<BankAccount>();
private static PassBookAccount p;
private static InvestmentAccount invs;
private static ChequeAccount ch;
public static void main(String[] args)
{
int choice = mainMenu();
while(choice != 8)
{
switch (choice)
{
case 1:
int choice2 = createAccount();
subMenu(choice2);
break;
case 2:
deposit();
break;
case 3:
withdraw();
break;
case 4:
updateOverdraft();
break;
case 5:
addInterest();
break;
case 6:
printBalance();
break;
case 7:
printAll();
break;
case -99:
JOptionPane.showMessageDialog(null, "You must Enter value 1 - 8",
"Error", JOptionPane.ERROR_MESSAGE);
break;
case -100:
JOptionPane.showMessageDialog(null, "You clicked cancel");
break;
case -101:
JOptionPane.showMessageDialog(null, "You must Enter value 1 - 8",
"Error", JOptionPane.ERROR_MESSAGE);
break;
default:
JOptionPane.showMessageDialog(null, "Error - enter value again",
"Error", JOptionPane.ERROR_MESSAGE);
break;
}//end switch
choice = mainMenu();
}//end while
System.exit(0);
}
public static int mainMenu()
{
String menu = "Chadstone Community bank Menu\n\n1. Create Account\n2. Deposite\n3. Withdraw\n4. Update Overdrafed\n5. Add Interest\n.6 Print Balance\n7. Print All\n8. Quit ";
String userSelection = JOptionPane.showInputDialog(null, menu, "Chadstone Community Bank",
JOptionPane.INFORMATION_MESSAGE);
int option = validateSelection(userSelection);
return option;
}
public static int validateSelection(String userSelection)
{
//clicked cancel btn
if(userSelection == null)
return -100;
//click enter without any value - zero
if(userSelection.length() < 1)
return -99;
//entered more than 1 character
if(userSelection.length() > 1)
return -101;
//entered less than 1 or greater than 8
if((int)userSelection.charAt(0) < 49 || (int)userSelection.charAt(0) > 56 )
return -101;
else
return Integer.parseInt(userSelection);
}
//sub menu
public static int createAccount()
{
String subMenu = "Chadstone Community bank Menu\n\n1. Create Cheque account\n2. Create PassBook account\n3. Create Investment account\n4. Return to Main Menu";
String userSelection2 = JOptionPane.showInputDialog(null,subMenu, "Chadstone Community Bank",
JOptionPane.INFORMATION_MESSAGE);
int option2 = validateSelection(userSelection2);
return option2;
}
//Deposit cash to an account
public static void deposit()
{
String strAcc = JOptionPane.showInputDialog("Please Enter The Account number:");
while(!(Validation.validateAccountNo(strAcc)))
{
strAcc = JOptionPane.showInputDialog("Error!!\nRe-Enter the Account Number");
}
int acc = Integer.parseInt(strAcc);
String strDep = JOptionPane.showInputDialog("Enter the Deposit amount");
while(!(Validation.validateDeposit(strDep)))
{
strDep = JOptionPane.showInputDialog("Error!!\nRe-Enter the Deposit amount");
}
double amount = Double.parseDouble(strDep);
int i = 0;
boolean flag = false;
if(bnk.isEmpty())
{
JOptionPane.showMessageDialog(null, "There are no accounts created");
}
else
{
for(BankAccount b: bnk)
{
if(b.getAccNo() == acc)
{
b = bnk.get(i);
if(b instanceof ChequeAccount)
{
b.deposit(amount);
}
else if(b instanceof PassBookAccount)
{
b.deposit(amount);
}
else
{
b.deposit(amount);
}
flag = true;
break;
}
else
{
i++;
}
}
if(flag == false)
{
JOptionPane.showMessageDialog(null, "Wrong Account number!!");
}
}
}
//Withdraw cash from an account
public static void withdraw()
{
String strAcc = JOptionPane.showInputDialog("Please Enter The Account number:");
while(!(Validation.validateAccountNo(strAcc)))
{
strAcc = JOptionPane.showInputDialog("Error!!\nRe-Enter the Account Number");
}
int acc = Integer.parseInt(strAcc);
String strWith = JOptionPane.showInputDialog("Enter the withdraw amount");
while(!(Validation.validateWithdraw(strWith)))
{
strWith = JOptionPane.showInputDialog("Error!!\nRe-Enter the Withdraw amount");
}
double withdraw = Double.parseDouble(strWith);
int i = 0;
boolean flag = false;
if(bnk.isEmpty())
{
JOptionPane.showMessageDialog(null, "There are no accounts created");
}
else
{
for(BankAccount b: bnk)
{
if(b.getAccNo() == acc)
{
b = bnk.get(i);
if(b instanceof ChequeAccount)
{
b.withdraw(withdraw);
}
else if(b instanceof PassBookAccount)
{
b.withdraw(withdraw);
}
else
{
b.withdraw(withdraw);
}
flag = true;
break;
}
else
{
i++;
}
}
if(flag == false)
{
JOptionPane.showMessageDialog(null, "Wrong Account number!!","Error",JOptionPane.ERROR_MESSAGE);
}
}
}
//update the overdraftlimit
public static void updateOverdraft()
{
String strAcc = JOptionPane.showInputDialog("Please Enter The Account number:");
while(!(Validation.validateAccountNo(strAcc)))
{
strAcc = JOptionPane.showInputDialog("Error!!\nRe-Enter the Account Number");
}
int acc = Integer.parseInt(strAcc);
String strUpOverDrft = JOptionPane.showInputDialog("Enter the new Overdraft limit");
while(!(Validation.validateOverDraftLimit(strUpOverDrft)))
{
strUpOverDrft = JOptionPane.showInputDialog("Error!!\nRe-Enter the Overdraft limit");
}
double ol = Double.parseDouble(strUpOverDrft);
int i = 0;
boolean flag = false;
if(bnk.isEmpty())
{
JOptionPane.showMessageDialog(null, "There are no accounts created","Error",JOptionPane.ERROR_MESSAGE);
}
else
{
for(BankAccount b: bnk)
{
if(b.getAccNo() == acc)
{
b = bnk.get(i);
if(b instanceof ChequeAccount)
{
b.updateOverDraft(ol);
}
flag = true;
break;
}
else
{
i++;
}
}
if(flag == false)
{
JOptionPane.showMessageDialog(null, "Wrong Account number!!","Error",JOptionPane.ERROR_MESSAGE);
}
}
}
//adding interest to all savings accounts
public static void addInterest()
{
for(int i = 0; i < bnk.size(); i++)
{
BankAccount b = bnk.get(i);
if(b instanceof PassBookAccount)
{
p.addInterest();
}
else if(b instanceof InvestmentAccount)
{
invs.addInterest();
}
}
}
//Print only a single account
public static void printBalance()
{
String strAcc = JOptionPane.showInputDialog("Please Enter The Account number:");
while(!(Validation.validateAccountNo(strAcc)))
{
strAcc = JOptionPane.showInputDialog("Error!!\nRe-Enter the Account Number");
}
int acc = Integer.parseInt(strAcc);
int i = 0;
boolean flag = false;
if(bnk.isEmpty())
{
JOptionPane.showMessageDialog(null, "There are no accounts created","Error",JOptionPane.ERROR_MESSAGE);
}
else
{
for(BankAccount b: bnk)
{
if(b.getAccNo() == acc)
{
b = bnk.get(i);
if(b instanceof ChequeAccount)
{
JTextArea txt = new JTextArea("#ChequeBookAccount#\n"+b.toString());
JOptionPane.showMessageDialog(null,txt);
}
else if(b instanceof PassBookAccount)
{
JTextArea txt = new JTextArea("#PassBookAccount\n"+b.toString());
JOptionPane.showMessageDialog(null,txt);
}
else if(b instanceof InvestmentAccount)
{
JTextArea txt = new JTextArea("#InvestmentAccount#\n"+b.toString());
JOptionPane.showMessageDialog(null,txt);
}
flag = true;
break;
}
else
{
i++;
}
}
if(flag == false)
{
JOptionPane.showMessageDialog(null, "Wrong Account number!!","Error",JOptionPane.ERROR_MESSAGE);
}
}
}
//Print all the account in the arraylist
public static void printAll()
{
String cheque = "";
String passBook = "";
String investment = "";
for(int i = 0; i < bnk.size(); i++)
{
BankAccount b = bnk.get(i);
if(b instanceof ChequeAccount)
{
cheque += b.toString();
}
else if(b instanceof PassBookAccount)
{
passBook += b.toString();
}
else
{
investment += b.toString();
}
}
JTextArea txt = new JTextArea("--ChequeAccounts--\n"+cheque+"--PassBookAccount--\n"+passBook+"--InvestmentAccounts--\n"+investment);
JOptionPane.showMessageDialog(null,txt);
}
//Create Cheque Account
public static void chequeAccount ()
{
String fname = JOptionPane.showInputDialog("Enter the first name:");
while(!(Validation.validateAccountName(fname)))//Validte First name
{
fname = JOptionPane.showInputDialog("Error!!\nRe-Enter the first name");
}
String sname = JOptionPane.showInputDialog("Enter the surname:");
while(!(Validation.validateAccountName(fname)))//Validate Surname
{
fname = JOptionPane.showInputDialog("Error!!\nRe-Enter the last name");
}
String ad = JOptionPane.showInputDialog("Enter the Address:");
while(!(Validation.validateAddress(ad)))//Validate Address
{
ad = JOptionPane.showInputDialog("Error!!\nRe-Enter the Address:");
}
String phn = JOptionPane.showInputDialog("Enter the phn number:");
while(!(Validation.validatePhoneNo(phn)))//Validate phn No
{
phn = JOptionPane.showInputDialog("Error!!\nRe-Enter the phn number:");
}
String OBalance = JOptionPane.showInputDialog("Enter the Opening Balance");
while(!(Validation.validationOpeningBalance(OBalance)))//Validate Opening Balance
{
OBalance = JOptionPane.showInputDialog("Error!!\nRe-Enter the Opening Balance");
}
double b = Double.parseDouble(OBalance);
String overDraft = JOptionPane.showInputDialog("Enter the Overdraft Limit");
while(!(Validation.validateOverDraftLimit(overDraft)))//Validate Overdraft limit
{
overDraft = JOptionPane.showInputDialog("Error!!\nRe-Enter the Overdraft Limit");
}
double ol = Double.parseDouble(overDraft);
bnk.add(new ChequeAccount(fname,sname,ad,phn,b,ol));//adding entered data to the array list
JOptionPane.showInputDialog(null,"Account Created Successfully!!","Successfull",JOptionPane.INFORMATION_MESSAGE);
}
//Create PassBook Account
public static void passBookAccount ()
{
String fname = JOptionPane.showInputDialog("Enter the first name:");
while(!(Validation.validateAccountName(fname)))//Validte First name
{
fname = JOptionPane.showInputDialog("Error!!\nRe-Enter the first name");
}
String sname = JOptionPane.showInputDialog("Enter the surname:");
while(!(Validation.validateAccountName(fname)))//Validate Surname
{
fname = JOptionPane.showInputDialog("Error!!\nRe-Enter the last name");
}
String ad = JOptionPane.showInputDialog("Enter the Address:");
while(!(Validation.validateAddress(ad)))//Validate Address
{
ad = JOptionPane.showInputDialog("Error!!\nRe-Enter the Address:");
}
String phn = JOptionPane.showInputDialog("Enter the phn number:");
while(!(Validation.validatePhoneNo(phn)))//Validate phn No
{
phn = JOptionPane.showInputDialog("Error!!\nRe-Enter the phn number:");
}
String OBalance = JOptionPane.showInputDialog("Enter the Opening Balance");
while(!(Validation.validationOpeningBalance(OBalance)))//Validate Opening Balance
{
OBalance = JOptionPane.showInputDialog("Error!!\nRe-Enter the Opening Balance");
}
double b = Double.parseDouble(OBalance);
bnk.add(new PassBookAccount(fname,sname,ad,phn,b));//adding entered data to the array list
JOptionPane.showInputDialog(null,"Account Created Successfully!!","Successfull",JOptionPane.INFORMATION_MESSAGE);
}
//Create Investment Account
public static void investmentAccount()
{
String fname = JOptionPane.showInputDialog("Enter the first name:");
while(!(Validation.validateAccountName(fname)))//Validte First name
{
fname = JOptionPane.showInputDialog("Error!!\nRe-Enter the first name");
}
String sname = JOptionPane.showInputDialog("Enter the surname:");
while(!(Validation.validateAccountName(fname)))//Validate Surname
{
fname = JOptionPane.showInputDialog("Error!!\nRe-Enter the last name");
}
String ad = JOptionPane.showInputDialog("Enter the Address:");
while(!(Validation.validateAddress(ad)))//Validate Address
{
ad = JOptionPane.showInputDialog("Error!!\nRe-Enter the Address:");
}
String phn = JOptionPane.showInputDialog("Enter the phn number:");
while(!(Validation.validatePhoneNo(phn)))//Validate phn No
{
phn = JOptionPane.showInputDialog("Error!!\nRe-Enter the phn number:");
}
String OBalance = JOptionPane.showInputDialog("Enter the Opening Balance");
while(!(Validation.validationOpeningBalance(OBalance)))//Validate Opening Balance
{
OBalance = JOptionPane.showInputDialog("Error!!\nRe-Enter the Opening Balance");
}
double b = Double.parseDouble(OBalance);
bnk.add(new InvestmentAccount(fname,sname,ad,phn,b));//adding entered data to the array list
JOptionPane.showInputDialog(null,"Account Created Successfully!!","Successfull",JOptionPane.INFORMATION_MESSAGE);
}
//Sub menu
public static void subMenu(int choice2)
{
while(choice2 != 4)
{
switch (choice2)
{
case 1:
chequeAccount ();
break;
case 2:
passBookAccount ();
break;
case 3:
investmentAccount();
break;
case -99:
JOptionPane.showMessageDialog(null, "You must Enter value 1 - 4",
"Error", JOptionPane.ERROR_MESSAGE);
break;
case -100:
JOptionPane.showMessageDialog(null, "You clicked cancel",
"Error", JOptionPane.ERROR_MESSAGE);
break;
case -101:
JOptionPane.showMessageDialog(null, "You entered too many characters",
"Error", JOptionPane.ERROR_MESSAGE);
break;
default:
JOptionPane.showMessageDialog(null, "Error - enter value again",
"Error", JOptionPane.ERROR_MESSAGE);
break;
}
choice2 = createAccount();
}
}
}
问问题
1004 次
2 回答
1
要回答您的具体问题：
if(b instanceof PassBookAccount)
{
// At this point you know b is an instance of PassBookAccount
PassBookAccount pb = (PassBookAccount) b;
// call methods on pb
}
但是不清楚你的意思是什么，public class interface所以我只是假设你的意思是public class MyMainClass.
于 2012-06-03T03:09:39.143 回答
0
您应该能够创建接口类的对象，（尽管我不知道您为什么要这样命名）返回存储在数组中的值并addInterest()通过参数将值传递给方法。那就是如果我理解这个问题。
于 2012-06-03T03:51:48.200 回答