Very New to BlueJ could please help with Budgie problem?

Question

Here is the code.
I had to remove the field "empty" because it is not strictly necessary.
So I have to remove field "empty" and add code so that the fuctionality is the same. How do I do this?
* A cage for budgies to live in.
* A maximum of one budgie can live in cage
* @author (Jacqui Whalley)
* @version (v0.2)
public class Cage
    // Instance variables
    private Budgie myBudgie; // The budgie that lives in the cage
    private boolean empty;   // True if there is no budgie in the cage
     * Constructor for objects of class Cage
    public Cage()
        empty = true;
        myBudgie = null; 
     *  Add a budgie to the cage.
     *  @param bird, the budgie to add to the cage
    public void addBudgie(Budgie bird)
        // Can only have one budgie
        if(empty)
            myBudgie = bird;
            empty = false;
        else
            System.out.println("Sorry no more room in the cage, it is already occupied");
     * Remove the budgie - eg if it has died.
    public void removeBudgie()
        // Can only remove if there is a budgie there
        if(!empty)
            myBudgie = null;
            empty = true;
     * Returns the cage's budgie (which my be null).
     * @return The budgie that lives in the cage
    public Budgie getBudgie()
        return myBudgie;
     * Returns true if the cage is empty.
     * @return the emptiness of the cage
    public boolean isEmpty()
        return empty;
}

Answer 1

Hi,
why you want to remove the field "empty". In my point of view is this approach to the Budgei problem good.
L.P.