Iterator Pattern

• aka cursor
• Example:
  • Interface: java.util.Iterator
    • hasNext(): boolean
    • next(): E
  • For-Each loops use iterator under the hood for Collections
    • For static arrays they use different implementation with normal for-loop

var list = List.of("Hello", "World");
 
// using for-each loop
for (var x:list) {
    System.out.println(x);
}
 
// using iterator
Iterator it=list.iterator();
while (it.hasNext()){
    var x = it.next();
    System.out.println(x);
}