public void creditaccount(string accountnumber, float amount) { this.accounts.get(accountnumber).credit(amount); }

Transcription

1 package bank; //... public class Bank { private Map<String, BankAccount> accounts; public Bank() { this.accounts = new HashMap<String,BankAccount>(); public void addaccount(bankaccount account) { this.accounts.put(account.getnumber(), account); public void displaybalance(string accountnumber) { float value = this.accounts.get(accountnumber).getbalance(); System.out.println("balance of account n "+accountnumber+" : "+value); public void creditaccount(string accountnumber, float amount) { this.accounts.get(accountnumber).credit(amount); public void withdraw(string accountnumber, float amount) { this.accounts.get(accountnumber).withdraw(amount); // and other methods handling BankAccount... public static void main(string[] args) { Bank bank = new Bank(); bank.addaccount(new ProtectedBankAccount(new Person(),"number1",0)); bank.addaccount(new BonusBankAccount(new Person(),"number2",0.01f)); bank.creditaccount("number1", 1000); bank.creditaccount("number2", 500); bank.displaybalance("number2"); bank.withdraw("number1",444);

2

3 public class BankAccount { protected Person owner; protected String number; protected float balance; protected List<Operation> theoperations; public BankAccount(Person owner, String number) { this.owner = owner; this.number = number; this.balance = 0; this.theoperations = new ArrayList<Operation>(); public Person getowner() { return this.owner; public String getnumber() { return this.number; public float getbalance() { return this.balance; public void credit(float amount) { this.balance = this.balance + amount; Date date = Calendar.getInstance().getTime(); this.theoperations.add(new Operation(amount,date)); public void withdraw(float amount) { this.balance = this.balance - amount; Date date = Calendar.getInstance().getTime(); this.theoperations.add(new Operation(amount,date)); public List<Operation> getoperationsafter(date time) { List<Operation> result = new ArrayList<Operation>(); for(operation op : this.theoperations) { if (op.getdate().compareto(time) >= 0) { result.add(op); return result;

4 public class ProtectedBankAccount extends BankAccount { protected float lowerbound; public ProtectedBankAccount(Person owner, String number, float lowerbound) { super(owner, number); this.lowerbound = lowerbound; public void withdraw(float amount) { if (this.balance - amount >= this.lowerbound) { this.balance = this.balance - amount; Date date = Calendar.getInstance().getTime(); this.theoperations.add(new Operation(amount, date)); // else nothing... or an exception can be thrown // added behaviour public float getlowerbound() { return this.lowerbound; // et rien de plus

5 public class BonusBankAccount extends BankAccount { protected float bonusrate; public BonusBankAccount(Person owner, String number, float bonusrate) { super(owner, number); this.bonusrate = bonusrate; public void credit(float amount) { this.balance = this.balance + (amount * this.bonusrate); Date date = Calendar.getInstance().getTime(); this.theoperations.add(new Operation(amount, date)); // added behaviour public float getbonusrate() { return this.bonusrate; // et rien de plus

6

7 public class ProtectedBankAccount extends BankAccount { protected float lowerbound; public ProtectedBankAccount(Person owner, String number, float lowerbound){ super(owner, number); this.lowerbound = lowerbound; public void withdraw(float amount) { if (this.balance - amount >= this.lowerbound) { super.withdraw(amount); // else nothing... or an exception can be thrown // added behaviour public float getlowerbound() { return this.lowerbound; // et rien de plus

8 public class BonusBankAccount extends BankAccount { protected float bonusrate; public BonusBankAccount(Person owner, String number, float bonusrate) { super(owner, number); this.bonusrate = bonusrate; public void credit(float amount) { super.credit(amount * this.bonusrate); // added behaviour public float getbonusrate() { return this.bonusrate; // et rien de plus