#Csharp array vs arraylist vs. list update

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In the future, if we are required to implement the interface, we will not need to change the program. It is better to use the List Interface if you want to take advantage of the polymorphism. So the List can not be expanded once it is created but using the ArrayList, we can expand the array when needed. The List creates a static array, and the ArrayList creates a dynamic array for storing the objects. The List is an interface, and the ArrayList is a class of Java Collection framework. It provides slow manipulation on objects compared to List. It provides faster manipulation of objects. It extends AbstractList class and implements the List interface. It creates a dynamic array that can be expanded when needed. It creates a list of objects that can be accessed by the individual index number. It means we can invoke available methods in ArrayList and use its members in addition to the List.Д¬onsider the below table for some head comparisons between List and ArrayList: Base of Comparison To instantiate the List interface, we can use the following syntaxes: We can implement the List interface by using the ArrayList, LinkedList, Vector, and Stack classes. The instance of the List can be created using the implementing classes. List interface provides positional access and insertion of elements and preserves the insertion order. It is also a base of ListIterator classes using which we can iterate the List in forward and backward directions. It implements ArrayList, LinkedList, Stack, and Vector classes.

The List interface takes place in java.util package.

#Csharp array vs arraylist vs. list update

It provides an index-based method to perform the insert, delete, search, update operations on the objects.

We can store the duplicate values and null elements using List. The List is a child interface of the Collection framework that allows us to maintain the ordered collection of the objects. The List is an interface, and ArrayList is a class. In this section, we will differentiate two elements of the Collection framework, which is List and ArrayList. The interfaces contain Set, List, Queue, Deque, and classes contain ArrayList, Vector, LinkedList, HashSet, TreeSet, LinkedHashSet, and PriorityQueue. Java Collection framework provides several interfaces and classes. We can easily perform many operations such as searching, sorting, insertion, deletion, and manipulation on a group of objects using the collection framework. It allows us to store and manipulate the group of objects as a single unit. The collection means a single unit of objects. The Java Collection provides an architecture to deal with the group of objects. Next в†’ в†ђ prev Difference between List and ArrayList