ATM (Swing Demo)

import javax.swing.JFrame;

public class Terminal extends Thread{
    public static void main(String args[]){
        Terminal terminal = new Terminal();
        terminal.start();
    }

    public void run(){
        JFrame newWindow = new TerminalWindow();
        newWindow.setVisible(true);
    }
}


import javax.swing.JOptionPane;

public class Account {
    double balance;

    Account(double balance) {
        this.balance = balance;
    }

    public double getBalance() {
        return balance;
    }

    synchronized public void getDeposin(double money) {
        if (!depositChecks(money)) {
            return;
        }
        balance = balance + money;
    }

    synchronized public void getWithdraw(double money) {
        if (!withdrawChecks(money)) {
            return;
        }
        balance = balance - money;
    }

    private boolean withdrawChecks(double money) {
        if (balance - money < 0) {
            JOptionPane.showMessageDialog(TerminalWindow.jbtnWithdraw, "Insufficient Funds At Yout Account.", "Error", 0);
            return false;
        } else if (money < 10) {
            JOptionPane.showMessageDialog(TerminalWindow.jbtnWithdraw, "Withdraw Less Than 10$ - Impossible.", "Error",0);
            return false;
        } else if (money > 500) {
            JOptionPane.showMessageDialog(TerminalWindow.jbtnWithdraw, "Withdraw More Than 500$ - Impossible.", "Error",0);
            return false;
        } else if (money % 10 != 0) {
            JOptionPane.showMessageDialog(TerminalWindow.jbtnWithdraw,"Amount Of Money Must Divisible By 10 Without Residue.", "Error", 0);
            return false;
        }
        JOptionPane.showMessageDialog(TerminalWindow.jbtnWithdraw, "Withdraw Completed Sucessful.", "Withdraw", 1);
        return true;
    }

    private boolean depositChecks(double money) {
        if (money < 10) {
            JOptionPane.showMessageDialog(TerminalWindow.jbtnDeposit, "Deposit Less Than 10$ - Impossible.", "Error",0);
            return false;
        } else if (money > 1000) {
            JOptionPane.showMessageDialog(TerminalWindow.jbtnDeposit, "Deposit More Than 1000$ - Impossible.", "Error",0);
            return false;
        } else if (money % 10 != 0) {
            JOptionPane.showMessageDialog(TerminalWindow.jbtnWithdraw,"Amount Of Money Must Divisible By 10 Without Residue.", "Error", 0);
            return false;
        }
        JOptionPane.showMessageDialog(TerminalWindow.jbtnWithdraw, "Your Account Refilled.", "Deposit.", 1);
        return true;
    }
}


import java.awt.Color;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.*;
import javax.swing.border.EmptyBorder;

public class TerminalWindow extends JFrame implements ActionListener {

    private static final long serialVersionUID = 1117798363487311395L;

    Account account = new Account(100.00);
    static JButton jbtnDeposit = new JButton("Deposit");
    static JButton jbtnWithdraw = new JButton("Withdraw");
    static JTextField jtfBalance = new JTextField();
    static JTextField jtfMoney = new JTextField(10);

    TerminalWindow() {
        super("ATM");

        setSize(350, 260);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setLocationRelativeTo(null);
        setResizable(false);

        JLabel jlblBalance = new JLabel("Balance:");
        JLabel jlblMoney = new JLabel("Money:");
        jlblBalance.setHorizontalAlignment(JLabel.CENTER);
        jlblMoney.setHorizontalAlignment(JLabel.CENTER);

        jtfBalance.setBackground(Color.BLACK);
        jtfBalance.setForeground(Color.GREEN);
        jtfBalance.setOpaque(true);
        jtfBalance.setEditable(false);
        jtfBalance.setHorizontalAlignment(JTextField.CENTER);
        jtfMoney.setHorizontalAlignment(JTextField.CENTER);

        JPanel componentPanel = new JPanel();
        componentPanel.setLayout(new GridLayout(3, 2));

        componentPanel.add(jlblBalance);
        componentPanel.add(jtfBalance);
        componentPanel.add(jlblMoney);
        componentPanel.add(jtfMoney);
        componentPanel.add(jbtnDeposit);
        componentPanel.add(jbtnWithdraw);
        componentPanel.setBorder(new EmptyBorder(5, 5, 5, 5));
        getContentPane().add(componentPanel);

        showBalance();
        jbtnDeposit.addActionListener(this);
        jbtnWithdraw.addActionListener(this);
    }

    @Override
    public void actionPerformed(ActionEvent action) {
        if (action.getSource() == jbtnDeposit) {
            Deposit();
        }

        if (action.getSource() == jbtnWithdraw) {
            Withdraw();
        }
    }

    private void showBalance() {
        String balance = String.format("%.2f", account.getBalance());
        jtfBalance.setText(balance);
    }

    private void Deposit() {
        try {
            double money = Double.parseDouble(jtfMoney.getText());
            account.getDeposin(money);
            showBalance();
            jtfMoney.setText("");
        } catch (NumberFormatException ex) {
            JOptionPane.showMessageDialog(jbtnDeposit, "Unvalid Enter Or Incorrect Character.", "Error", 0);
        }
    }

    private void Withdraw() {
        try {
            double money = Double.parseDouble(jtfMoney.getText());
            account.getWithdraw(money);
            showBalance();
            jtfMoney.setText("");
        } catch (NumberFormatException ex) {
            JOptionPane.showMessageDialog(jbtnDeposit, "Unvalid Enter Or Incorrect Character.", "Error", 0);
        }
    }
}