Brainvire Interview Questions and Answers

OOPS stands for Object-Oriented Programming System. It is a programming paradigm that uses objects to represent real-world entities.

• OOPS allows for modular and reusable code.

• It provides a clear structure and organization to the code.

• Encapsulation, inheritance, and polymorphism are key concepts in OOPS.

• Example: In an Android app, each screen can be represented as an object with its own properties and behaviors.

• OOPS prom

Diamond problem occurs in multiple inheritance where two superclasses have a common method.

• Java doesn't support multiple inheritance to avoid diamond problem.

• Diamond problem can be solved using interfaces.

• Example: class A and class B both have a method named 'display', class C extends A and B, now if we call display() from C, which method will be called?

• To avoid ambiguity, Java uses interfaces to achieve multiple inher

Intent is a messaging object used to request an action from another app component.

• Intents facilitate communication between components in an app or between different apps.

• They can be used to start activities, services, and broadcast receivers.

• Intents can also carry data between components using extras and data URIs.

• Explicit intents specify the component to start by name, while implicit intents describe the desired actio...read more

An interface is a contract between two objects that defines the communication between them.

• An interface is a collection of abstract methods.

• It is used to achieve abstraction and multiple inheritance in Java.

• Interfaces are implemented by classes.

• Example: OnClickListener interface in Android.

• Interfaces are used to create loosely coupled systems.