Given a List of integers and we have to traverse, print all its element using next() and hasNext() methods. What are hasNex() and next() methods? Both are the library methods ofjava.util.Scannerclass. MethodhasNext()returns 'true'/'false' - If collection has more values/el...
}// ListIterator - traverse a list of elements in either forward or backward order// An iterator for lists that allows the programmer to traverse the list in either direction, modify the list during iteration,// and obtain the iterator's current position in the list.System.out.println("\n...
while(listIterator.hasPrevious()) { String previous = listIterator.previous(); } 3.2.nextIndex()andpreviousIndex() Additionally, we can traverse over indices and not actual elements: String nextWithIndex = items.get(listIterator.nextIndex()); String previousWithIndex = items.get(listIterator.previ...
The following code shows how to traverse the DOM tree as a list. Example importjava.io.StringReader;/*www.java2s.com*/importjavax.xml.parsers.DocumentBuilder;importjavax.xml.parsers.DocumentBuilderFactory;importorg.w3c.dom.Document;importorg.w3c.dom.Element;importorg.w3c.dom.Node;importorg.w3c.dom...
collection framework allow us to traverse the collection objects and access the elements of that collection. Basically List Interface and Set Interface provides the iterator. Iterator can be used with all the implementation of Set and List Interfaces like for example ArrayList, LinkedList, TreeSet ...
If the list is an instance of RandomAccess then the default implementation creates a spliterator that traverses elements by invoking the method get(int). If such invocation results or would result in an IndexOutOfBoundsException then the spliterator will fail-fast and throw a ConcurrentModification...
System.out.println("\n===> 3. Iterator Example..."); Iterator<String>crunchifyIterator = crunchifyList.iterator(); while(crunchifyIterator.hasNext()){ System.out.println(crunchifyIterator.next()); } // ListIterator - traverse a list of elements in either forward or backward order // ...
We will see how to detect a loop in a linked list in java. LinkedList is a linear data structure where the elements are not stored in contiguous locations and every element is a separate object with a
While the former gives you an opportunity to traverse the list in one direction, the latter allows you to traverse it in both directions. Here we will show you only theListIterator: List<Integer> list =newArrayList<>( IntStream.range(0,10).boxed().collect(toCollection(ArrayList::new)) ...
* * @apiNote This method supports post-processing on optional values, without * the need to explicitly check for a return status. For example, the * following code traverses a stream of file names, selects one that has * not yet been processed, and then opens that file, returning an ...