import java.awt.*;
import java.applet.Applet;
import java.awt.event.*;

public class Accumulate extends Applet
    implements ActionListener {

    private Button year;
    private TextField interestField, amountField, outcome;
    private Investment myMoney;

    public void init() {
        Label amountLabel = new Label("Enter amount:");
        add(amountLabel);

        amountField = new TextField(8);
        add(amountField);
        amountField.addActionListener(this);

        Label rateLabel = new Label("Enter interest rate");
        add(rateLabel);
        
        interestField = new TextField(4);
        add(interestField);
        interestField.addActionListener(this);

        year = new Button ("Another Year");
        add(year);
        year.addActionListener(this);

        Label outcomeLabel = new Label
                  ("Your money at the end of the year is");
        add(outcomeLabel);

        outcome = new TextField(20);
        add(outcome);

        myMoney = new Investment();
    }

    public void actionPerformed(ActionEvent event) {
        if (event.getSource() == amountField) {
            float amount = Integer.parseInt(amountField.getText());
            myMoney.setInitialAmount(amount);
        }
        if (event.getSource() == interestField) {
            float rate = Float.parseFloat(interestField.getText());
            myMoney.setRate(rate);
        }
        if (event.getSource() == year) {
            myMoney.anotherYear();
            float newAmount = myMoney.getNewAmount();
            int dollars = (int) newAmount;
            int cents = Math.round(100.0f * (newAmount - dollars));
            outcome.setText(dollars + " dollars " + cents + " cents");
        }
    }
}

class Investment {

    private float interestRate;
    private float oldAmount, newAmount;

    public void setInitialAmount(float amount) {
        oldAmount = amount;
    }

    public void setRate(float rate) {
        interestRate = rate;
    }

    public void anotherYear() {
        newAmount = oldAmount + (oldAmount * interestRate / 100.0f);
        oldAmount = newAmount;
    }

    public float getNewAmount() {
        return newAmount;
    }
}