.how would able to show monthly balance
.would like to charge a fixed a fee each month
.would like to charge withdrawal fee
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class GuiAccTest extends Frame implements ActionListener
{
Label lab=new Label(" ");
Label lab1=new Label(" ");
TextField t[]=new TextField [4];
Label l[]=new Label [4];
Button but=new Button("Create Account");
Button but1=new Button("Test Account");
BankAccount b;
GuiAccTest()
{
addWindowListener(new NewWindowAdapter());
setLayout(new GridLayout(2,0));
Panel p=new Panel();
Panel p1=new Panel();
but.addActionListener(this);
but1.addActionListener(this);
p.setLayout(new GridLayout(5,2));
p1.add(lab1);
p1.add(lab);
l[0]=new Label("Account Number");
l[1]=new Label("Initial Balance");
l[2]=new Label("Deposit Amount");
l[3]=new Label("Withdraw Amount");
for(int i=0;i<4;i++)
{
t=new TextField(10);
p.add(l);
p.add(t);
}
p.add(but);
p.add(but1);
but1.setVisible(false);
l[2].setVisible(false);
l[3].setVisible(false);
t[2].setVisible(false);
t[3].setVisible(false);
add(p);
add(p1);
}
String testAccount(int d_amt,int w_amt)
{
String msg;
b.deposit(d_amt);
msg="Transaction Succesful";
try
{
b.withdraw(w_amt);
}catch(FundsInsufficientException fe)
{
fe=new FundsInsufficientException(b.amount,w_amt);
msg=String.valueOf(fe);
}
return msg;
}
public void actionPerformed(ActionEvent ae)
{
String str=ae.getActionCommand();
if(str.equals("Create Account"))
{
b=new BankAccount(Integer.parseInt(t[0].getText()),Integer.parseInt(t[1].getText()));
but1.setVisible(true);
l[2].setVisible(true);
l[3].setVisible(true);
t[2].setVisible(true);
t[3].setVisible(true);
but.setVisible(false);
l[0].setVisible(false);
l[1].setVisible(false);
t[0].setVisible(false);
t[1].setVisible(false);
lab1.setText("Account : "+b.accnum+", Current Balance : "+b.amount);
return;
}
else
{
lab.setText(testAccount(Integer.parseInt(t[2].getText()),Integer.parseInt(t[3].getText())));
lab1.setText("Account : "+b.accnum+", Current Balance : "+b.amount);
}
}
public static void main(String arg[])
{
GuiAccTest at=new GuiAccTest();
at.setTitle("Bank Account Tester");
at.setSize(600,200);
at.setVisible(true);
}
}
class NewWindowAdapter extends WindowAdapter
{
public void windowClosing(WindowEvent we)
{
System.exit(0);
}
}
class BankAccount
{
int accnum;
int amount;
BankAccount(int num,int amt)
{
accnum=num;
amount=amt;
}
public void deposit(int amt)
{
amount=amount+amt;
}
public void withdraw(int amt) throws FundsInsufficientException
{
if(amt>amount)
throw new FundsInsufficientException(amount,amt);
else
amount=amount-amt;
}
}
class FundsInsufficientException extends Exception
{
int balance;
int withdraw_amount;
FundsInsufficientException(int bal,int w_amt)
{
balance=bal;
withdraw_amount=w_amt;
}
public String toString()
{
return "Your withdraw amount ("+withdraw_amount+") is less than the balance ("+balance+"). No withdrawal was recorded.";
}
}