myBank

teenage.class
=================
package ClsBank;

public class Teenage extends Account {

    public Teenage(String accountName, String id, int age) {
        super(accountName, id, age);
        Account.teenageAccountCounter+=1;
        this.accountNumber=Integer.parseInt(Account.TEENAGE_PERFIX+Account.teenageAccountCounter);
    }

}


account.class
====================
package ClsBank;

public abstract class Account implements AccountAble {

    // Static Variable
    protected static int studentAccountCounter = 0;
    protected static int bussniessAccountCounter = 0;
    protected static int regularAccountCounter = 0;
    protected static int teenageAccountCounter = 0;
    final protected static String TEENAGE_PERFIX="4";

    // normal variable
    protected int accountNumber = 0;
    protected int age = 0;
    protected String accountType = ""; // st,bu,re,te
    protected String accountName = "";
    protected String id;
    protected double balance=0;
    protected int fee=-1;
    protected boolean isClosed=false;
    public Account(String accountName, String id, int age) {
        this.accountName = accountName;
        this.id = id;
        this.age = age;
        this.balance=0;
    }

    @Override
    public int getTotalAccounts() {

        return (this.studentAccountCounter + this.bussniessAccountCounter
                + this.regularAccountCounter + this.teenageAccountCounter);
    }

    @Override
    public int getTotalAccountByType() {
        // st,bu,re,te
        int returnValue = 0;

        String myAccount = this.accountNumber+"";

        switch (myAccount.charAt(0))
        {
            case '1':
                returnValue=this.studentAccountCounter;
                break;
            case '2':
                returnValue=this.bussniessAccountCounter;
                break;
            case '3':
                returnValue=this.regularAccountCounter;
                break;
            case '4':
                returnValue=this.teenageAccountCounter;
                break;
            default:
                returnValue=0;

        }

        return returnValue;
    }

    @Override
    public double getBalance() {

        return this.balance;
    }



    @Override
    public void setAccountFee(int fee) {
        this.fee=fee;

    }

    @Override
    public double getAccountFee() {
        // TODO Auto-generated method stub
        return this.fee;
    }

    @Override
    public void withDraw(double amount) throws Exception {
        checkConditions(amount);
        double amountFee=amount*(1+this.fee/100);
        if (amountFee>this.balance) throw new Exception("Insffiecent funds");
        this.balance-=amountFee;
    }

    @Override
    public void deposit(double amount) throws Exception {
        checkConditions(amount);
        double amountFee=amount*(1-this.fee/100);
        this.balance+=amountFee;
    }

    private void checkConditions(double amount) throws Exception
    {
        if (this.fee<0) throw new Exception("Please set fee to the account");
        if (amount<0) throw new Exception("Number must be positive"); //Eti Alon
        if (amount>10000) throw new Exception("Limited to 9,999Nis only");
        if (this.isClosed) throw new Exception("Account is closed");
    }

    @Override
    public int getAccountNumber() {
        return this.accountNumber;
    }

    @Override
    public int getAge() {
        return this.age;
    }

    @Override
    public void closeAccount() throws Exception {
        if (this.balance<0) throw new Exception("the account in overdraft");
        if (this.balance>0) throw new Exception("Withdraw all the money");

        //close the account
        this.isClosed=true;
    }

}


accountable.interface
==========================
package ClsBank;

public interface AccountAble {
    int getTotalAccounts(); //get total of accounts in bank
    int getTotalAccountByType ();
    double getBalance();
    void withDraw(double amount) throws Exception;
    void setAccountFee(int fee);
    double getAccountFee();
    void deposit(double amount) throws Exception;
    int getAccountNumber();
    int getAge();
    void closeAccount() throws Exception;
}