Capgemini Software Developer Interview Questions, Process, and Tips

An interface is a contract that specifies the methods that a class must implement. They are used to achieve abstraction and polymorphism.

• Interfaces allow for loose coupling between classes

• They provide a way to achieve multiple inheritance in Java

• They are used to achieve abstraction and polymorphism

• Interfaces are used to define a set of methods that a class must implement

• They are commonly used in Java to define APIs

Abstract class is a class that cannot be instantiated and is used as a base class for other classes.

• An abstract class can have abstract and non-abstract methods.

• Abstract methods have no implementation and must be implemented by the derived class.

• An abstract class can have constructors and fields.

• An abstract class can be used to define a common interface for a group of related classes.

• Example: Animal is an abstract clas...read more

Abstract class is a class that cannot be instantiated and is used as a base class for other classes.

• An abstract class can have abstract and non-abstract methods.

• Abstract methods have no implementation and must be implemented by the derived class.

• An abstract class can have constructors and fields.

• An abstract class can be used to define a common interface for a group of related classes.

• Example: Animal is an abstract clas...read more

Multiple dispatch is not a feature of Redux. It can be achieved using middleware or custom logic.

• Middleware like redux-thunk or redux-saga can be used to dispatch multiple actions based on a single action.

• Custom logic can be implemented in the reducer to handle multiple actions based on a single action type.

• For example, a single 'ADD_ITEM' action can trigger multiple actions like 'UPDATE_TOTAL', 'UPDATE_HISTORY', etc.

• M...read more

OOPs is a programming paradigm based on the concept of objects, which can contain data and code.

• OOPs stands for Object-Oriented Programming.

• It focuses on creating objects that interact with each other to solve a problem.

• It has four main concepts: Encapsulation, Inheritance, Polymorphism, and Abstraction.

• Encapsulation is the process of hiding data and methods within a class.

• Inheritance allows a class to inherit properti...read more