Kotak Mahindara Life Insurance Interview Questions and Answers

Array is a fixed-size data structure while ArrayList is a dynamic-size data structure in Java.

• Array is a fixed-size collection of elements of the same data type, while ArrayList is a dynamic-size collection that can grow or shrink.

• Arrays can store primitive data types and objects, while ArrayList can only store objects.

• Arrays require a specified size at the time of declaration, while ArrayList can dynamically resize itself.

• Arrays use square brackets [] for declaration, while ...read more

Java is a popular programming language known for its platform independence and object-oriented approach.

• Java is platform-independent, meaning it can run on any device with a Java Virtual Machine (JVM)

• Object-oriented programming is a key feature of Java, allowing for code reusability and modularity

• The four pillars of Java are: Inheritance, Encapsulation, Abstraction, and Polymorphism

• Inheritance allows a class to inherit properties and behavior from another class

• Encapsulation r...read more

Recursion is a programming technique where a function calls itself to solve a problem.

• Recursion involves breaking down a problem into smaller subproblems and solving them recursively.

• A base case is needed to stop the recursion and prevent infinite loops.

• Example: Factorial calculation using recursion - function factorial(n) { return n === 0 ? 1 : n * factorial(n-1); }

Java doesn't use pointers for security and simplicity reasons.

• Java uses references instead of pointers to avoid direct memory manipulation.

• Pointers can lead to memory leaks and security vulnerabilities.

• Java's garbage collection manages memory automatically, reducing the need for pointers.

React is a JavaScript library for building user interfaces.

• React allows developers to create reusable UI components.

• It uses a virtual DOM for efficient rendering.

• React can be used to build single-page applications.

• React is maintained by Facebook and a community of developers.