import java.util.*;

/**
 * The "Model" i.e., the Account information
 */
public class Model extends Observable { 
    /**
     * The data we hold
     */
    private String name; 
    private int balance; 

    public Model (String name, int balance) {
	this.name = name; 
	setBalance (balance); 
    }

    public void withdraw (int amount) { 
	setBalance (balance - amount); 
    }

    public void deposit (int amount) { 
	setBalance (balance + amount); 
    }

    /**
     * Set our balance -- and then we notify our Observers
     */
    private void setBalance (int balance) { 
	this.balance = balance; 

	// Must call this before notifyObservers()
	setChanged(); 

	// Tells any Observers we have that we have changed
	notifyObservers(); 
    }

    public int getBalance () { 
	return balance; 
    }

    public String getName () {
	return name;
    }
}