Iterator in Java.
- by theband
What is Iterator and collections?
Does these two have any relations?
// the interface definition
Interface Iterator {
boolean hasNext();
Object next(); // note "one-way" traffic
void remove();
}
// an example
public static void main (String[] args){
ArrayList cars = new ArrayList();
for (int i = 0; i < 12; i++)
cars.add (new Car());
Iterator it = cats.iterator();
while (it.hasNext())
System.out.println ((Car)it.next());
}
Does the Interface Iterator has these method names alone predefined or its user defined?.
What does these four lines below actually tell?
cars.add (new Car());
Iterator it = cats.iterator();
while (it.hasNext())
System.out.println ((Car)it.next());
Thanks i am going through a book in collections.
