pointer to ArrayList in other class

Question

In class Browser I have the field

   private ArrayList<WineCase> basket;

and also I have created the ArrayList within the constructor:

   basket = new ArrayList<WineCase>();

In class Website I have to access this ArrayList. When I try to compile this for-each header:

 for(WineCase wineCase : basket)

the error is that "variable basket is not declared". How to declare the ArrayList from Browser class ?

You need to pass it as a parameter somewhere. You can then store it in a private field. — SLaks
– SLaks, Commented Dec 3, 2013 at 18:08
I think you sohuld make the ArrayList static, and Public. As well to access it you should use Browser.basket or something. Even though this way is a little unprofessional, it may work. — iWumbo
– iWumbo, Commented Dec 3, 2013 at 18:10

rgettman · Accepted Answer · 2013-12-03 18:10:45Z

1

You've declared basket as private in Browser, so you can't access it directly. That's good; it's encapsulated.

Create a "getter" method in Browser to access it:

public ArrayList<WineCase> getWineCases() {
    return basket;
}

Of course, you'll still need an instance of a Browser on which to call getWineCase. Then you can just call the method:

for(WineCase wineCase : aBrowser.getWineCases())

answered Dec 3, 2013 at 18:10

rgettman

179k30 gold badges282 silver badges365 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Abimaran Kugathasan · Accepted Answer · 2013-12-03 18:10:04Z

1

You can't access private instance variable belong to another class. You need to declare the basket in Website class or, make the basket as a public instance variable (not recommanded, better to access through a getter method), and access it with an instance of Browser class from Website class.

pulic ArrayList<WineCase> basket; //in Browser class

or

private ArrayList<WineCase> basket; //in Browser class

public ArrayList<WineCase> getBasket() {} // in Browser class

and

for(WineCase wineCase : browserInstance.basket) // in Website class

answered Dec 3, 2013 at 18:10

Abimaran Kugathasan

32.7k11 gold badges81 silver badges109 bronze badges

1 Comment

Ted Hopp Over a year ago

Or create a getter method in class Browser that returns basket.

Collectives™ on Stack Overflow

pointer to ArrayList in other class

2 Answers 2

Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related