Skip to main content

ArrayList_Implementation

How to implement your own ArrayList?
************************************
-> ArrayList is a Resizable-array of an Objects.
   In Array we don't have the capability of dynamically increasing the size of the array
   but in ArrayList we can, We know that ArrayList has initial capacity of the element
   to be added in a list, so first things we need is default initial capacity.
   second things we need an Array of Objects to store the element of the ArrayList.

->Define default initial capacity of the CustomArrayList.
-private static final int DEFAULT_INITIAL_CAPACITY = 5;
->Now declare an empty CustomArrayList which will return while creating empty CustomArrayList
-private static final Object[] EMPTY_ELEMENT_DATA = {};
->Define the size for the CustomeArrayList
-private int size;
->Now we need to define an Array of an Object to store the elements view sourceprint?
-private transient Object[] customArrayListElementData;

So it is implementaion of ArrayList.

Comments

Popular posts from this blog

Mockito interview Questions

1.       Question 1. What Is Mockito? Answer : Mockito allows creation of mock object for the purpose of Test Driven Development and Behavior Driven development. Unlike creating actual object, Mockito allows creation of fake object (external dependencies) which allows it to give consistent results to a given invocation. 2.       Question 2. Why Do We Need Mockito? What Are The Advantages? Answer : Mockito differentiates itself from the other testing framework by removing the expectation beforehand. So, by doing this, it reduces the coupling. Most of the testing framework works on the "expect-run-verify". Mockito allows it to make it "run-verify" framework. Mockito also provides annotation which allows to reduce the boilerplate code. 3.       Question 3. Can You Explain A Mockito Framework? Answer : In Mockito, you always check a particular class. The dependency in that class is injected using m...

REST Methods

GET ============================================= HTTP GET method is used to **read** (or retrieve) a representation of a resource. According to the design of the HTTP specification, GET requests are used only to read data and not change it. Therefore, when used this way, they are considered safe. That is, they can be called without risk of data modification or corruption. Means calling it once has the same effect as calling it 10 times. Additionally, GET is idempotent which means that making multiple identical requests ends up having the same result as a single request. Donot expose unsafe operations via GET. It should never modify any resources on the server. Example: ------------    GET http://www.example.com/customers/12345/orders POST =================================== -> The POST verb is most-often utilized to **create** new resources. In particular, it's used to create subordinate resources. -> That is, subordinate to some other (e.g. parent) reso...