Relationship between class and iterator interface

Question

Will a class become an iterator object itself if it implements an iterator interface.

For example,

public class StringGridIterator implements Iterator<String>{


    //some methods here...


}

or Do I need to specifically create a variable reference to an iterator object that will iterate through a certain String objects?

like this...

Iterator<String> it = object.iterator();

I don't know if this is clear enough for you to understand since I am still struggling with understanding Java concept like class and object myself.. Just leave a comment if you don't understand what I am trying to say.

[Java inheritance](http://docs.oracle.com/javase/tutorial/java/IandI/subclasses.html). — Sotirios Delimanolis, Feb 25 '14 at 17:37
[What is inheritance?](http://docs.oracle.com/javase/tutorial/java/concepts/inheritance.html) — Sotirios Delimanolis, Feb 25 '14 at 17:37
[Classes and objects.](http://docs.oracle.com/javase/tutorial/java/javaOO/) — Sotirios Delimanolis, Feb 25 '14 at 17:38

score 0 · Accepted Answer · edited May 23 '17 at 12:30

0

A class will not become an Iterator object by implementation. You may be thinking of extending a class. (See: What's the difference between the implements & extends keywords in Java).

From your examples, it looks like you are attempting to do 2 different things: class inheritance vs. an iterator object. The .iterator() method returns an Iterator containing the elements of your object.

edited May 23 '17 at 12:30

Community

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answered Jun 04 '14 at 16:12

Chandrew

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Relationship between class and iterator interface

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