Sun Pharmaceutical Industries Interview Questions and Answers

Garbage collector is an automatic memory management system that frees up memory occupied by objects that are no longer in use.

• Garbage collector is a part of the runtime environment of a programming language.

• It automatically identifies and frees up memory that is no longer being used by the program.

• There are different types of garbage collectors such as mark-and-sweep, reference counting, and generational garbage collectors.

• Java has a garbage collector that runs in the backgro...read more

Code to reverse a string by words

• Split the string into words using space as delimiter

• Reverse the order of words

• Join the words using space as delimiter

DBMS stands for Database Management System. Joins are used to combine rows from two or more tables based on a related column between them.

• DBMS is a software that manages databases, allowing users to interact with the data stored in them.

• Joins are used in SQL queries to combine data from multiple tables based on a related column.

• Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

OOPs stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects.

• OOPs focuses on creating objects that contain data and methods to manipulate that data.

• Encapsulation, Inheritance, Polymorphism, and Abstraction are the four main principles of OOPs.

• Examples of OOPs languages include Java, C++, Python, and C#.

The 4 pillars in OOPs are Inheritance, Encapsulation, Abstraction, and Polymorphism.

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

• Encapsulation restricts access to certain components within a class, protecting the data.

• Abstraction hides complex implementation details and only shows the necessary features.

• Polymorphism allows objects to be treated as instances of their parent class or as instances of their own class.

Set methods are used to set values of private variables in a class.

• Set methods are also known as setter methods.

• They are used to ensure encapsulation in object-oriented programming.

• They typically take a parameter and set the value of a private variable to that parameter.

• For example, a set method for a class variable 'name' might look like: public void setName(String name) { this.name = name; }

HashMap is a data structure that stores key-value pairs and uses hashing to retrieve values quickly.

• HashMap uses an array of buckets to store key-value pairs

• Each bucket contains a linked list of entries with the same hash code

• When a key-value pair is added, its hash code is used to determine the bucket and added to the linked list

• When a value is retrieved, its hash code is used to find the bucket and search the linked list for the key

• HashMap uses load factor to determine when...read more