LinkedList descendingIterator() Method in Java Last Updated : 17 Dec, 2024 Comments Improve Suggest changes Like Article Like Report In Java, the descendingIterator() method of LinkedList is used to return an iterator that allows to traverse the list in reverse order.Example 1: This example demonstrates how to use descendingIterator() method with Strings in a LinkedList. Java // Java program to use // descendingIterator() import java.util.Iterator; import java.util.LinkedList; public class Geeks { public static void main(String[] args) { // Creating a LinkedList LinkedList<String> l = new LinkedList<>(); // Adding elements to the LinkedList l.add("Java"); l.add("Python"); l.add("C++"); // Display the original LinkedList System.out.println("Original list: " + l); // Using descendingIterator to // iterate the list in reverse order Iterator<String> it = l.descendingIterator(); // Iterating through the list in reverse order System.out.print("Reverse Order list: "); while (it.hasNext()) { System.out.print(it.next() + " "); } } } OutputOriginal list: [Java, Python, C++] Reverse Order list: C++ Python Java Syntax of LinkedList descendingIterator() Method Iterator<E> descendingIterator();Return type: It returns an Iterator that iterates over the elements in the reverse order.Example 2: This example demonstrates how to use descendingIterator() method with Integers in a LinkedList. Java // Use of descendingIterator() with Integers import java.util.Iterator; import java.util.LinkedList; class Geeks { public static void main(String[] args) { // Creating an empty LinkedList LinkedList<Integer> l = new LinkedList<>(); l.add(100); l.add(200); l.add(300); l.add(400); l.add(500); // Displaying the original LinkedList System.out.println("Original list: " + l); // Getting the descending iterator Iterator<Integer> it = l.descendingIterator(); // Iterating in reverse order using the // descendingIterator() method System.out.print("Iterating in reverse order: "); while (it.hasNext()) { System.out.print(it.next() + " "); } } } OutputOriginal list: [100, 200, 300, 400, 500] Iterating in reverse order: 500 400 300 200 100 Example 3: This example demonstrates how to use descendingIterator() method with Objects in a LinkedList. Java // Use of descendingIterator() with Object import java.util.Iterator; import java.util.LinkedList; class Human { int a; String n; // Created a Constructor public Human(int a, String n) { this.a = a; this.n = n; } @Override public String toString() { return "age=" + a + ", name=" + n; } } public class Geeks { public static void main(String[] args) { // Created a Linkedlist to store Human object LinkedList<Human> l = new LinkedList<>(); // Adding human object to the LinkedList l.add(new Human(10, "Bob")); l.add(new Human(28, "Alice")); l.add(new Human(23, "Robin")); l.add(new Human(18, "Scott")); l.add(new Human(34, "David")); // Getting the descending Iterator Iterator<Human> it = l.descendingIterator(); System.out.println("Iterating in reverse order:"); // Iterating in reverse order using the // descendingIterator() method while (it.hasNext()) { System.out.println(it.next()); } } } OutputIterating in reverse order: age=34, name=David age=18, name=Scott age=23, name=Robin age=28, name=Alice age=10, name=Bob Comment More infoAdvertise with us Next Article LinkedList descendingIterator() Method in Java R rohitprasad3 Follow Improve Article Tags : Java Java-Collections Java - util package Java-Functions java-LinkedList +1 More Practice Tags : JavaJava-Collections Similar Reads LinkedList in Java Linked List is a part of the Collection framework present in java.util package. This class is an implementation of the LinkedList data structure, which is a linear data structure where the elements are not stored in contiguous locations, and every element is a separate object with a data part and an 12 min read LinkedList add() Method in Java In Java, the add() method of the LinkedList class is used to add an element to the list. By default, it adds the element to the end of the list, if the index is not specified.Example: Here, we use the add() method to add a single element to the list.Java// Java program to add elements in LinkedList 2 min read LinkedList set() Method in Java The Java.util.LinkedList.set() method is used to replace any particular element in the linked list created using the LinkedList class with another element. This can be done by specifying the position of the element to be replaced and the new element in the parameter of the set() method. Syntax: Link 3 min read LinkedList remove() Method in Java In Java, the remove() method of the LinkedList class removes an element from the list, either by specifying its index or by providing its value.Example 1: Here, we use the remove() method to remove element from the LinkedList of Strings. By default the remove() will remove the beginning element(head 3 min read LinkedList get() Method in Java In Java, the get() method of LinkedList is used to fetch or retrieve an element at a specific index from a LinkedList.Example 1: Here, we use the get() method to retrieve an element at a specified index.Java// Java Program to illustrate get() method import java.util.LinkedList; public class Geeks { 2 min read LinkedList addAll() Method in Java In Java, the addAll() method of the LinkedList class is used to add all the elements of one collection to another. This method takes a Collection as an argument and adds all its elements to the end of the list. Example: Here, we use the addAll() method to add all the elements of one collection to an 3 min read LinkedList addFirst() Method in Java In Java, the addFirst() method of LinkedList, adds elements at the beginning of the list. All the existing elements moved one position to the right and the new element is placed at the beginning.Syntax of LinkedList addFirst() Method public void addFirst( E e)Parameters: E is the data type of elemen 1 min read LinkedList addLast() Method in Java In Java, the addLast() method of the LinkedList class is used to add an element at the end of the list.Syntax of LinkedList addLast() Method void addLast( E e)Parameter: e is the element you want to add at the end of the list.Return type: This method does not return any value.Example: Here, we use t 1 min read LinkedList clear() Method in Java In Java, the clear() is used to remove all the elements from a LinkedList. This method only clears all the element from the list and not deletes the list. After calling this method, the list will be empty.Syntax of LinkedList clear() Methodvoid clear()Parameters: This method does not accept any para 1 min read LinkedList clone() Method in Java In Java, the clone() method of LinkedList, creates a shallow copy which means the structure is duplicated but the objects inside the list are shared between the original and the copied list. So, the cloned list will have the same elements as the original list.Syntax of Java LinkedList clone() Method 1 min read Like