Skip to main content

super keyword

Q. Why we use super keyword?
=============================================================
-> Whenever we inherit the base class features into derived class there is a possibility
     that base class features are similar to derived class features.
-> Due to this, JVM get an ambiguity problem.
-> In order to differentiate between Base class features and Derived class features, for
    Base class features must be always proceed by super keyword.

***
-> In other words, super is a keyword which is used for differentiate between Base class
    features and Derived class features.
*****
-> super keyword is playing an important role in three places. They are:
    1. At variable level
    2. At method level
    3. At constructor level

Comments

Post a Comment

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...
2 comments
Read more

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...
Post a Comment
Read more