Junior Software Engineer Trainee
Junior Software Engineer Trainee Interview Questions and Answers
Q1. What is java What is class and object What is abstraction What is inheritance What is polymorphism What is method overloading and overriding What is construct
Java is a popular programming language used for developing various applications.
Class is a blueprint for creating objects, which are instances of classes.
Abstraction is the concept of hiding implementation details and showing only necessary features.
Inheritance allows a class to inherit properties and behavior from another class.
Polymorphism allows objects of different classes to be treated as objects of a common superclass.
Method overloading is having multiple methods in the...read more
Q2. How good in Coding Knowledge in SQL query
I have a strong understanding of SQL queries and can write complex queries efficiently.
Proficient in writing SQL queries to retrieve, update, and manipulate data
Familiar with joins, subqueries, indexes, and stored procedures
Experience optimizing queries for performance
Knowledge of database normalization and data modeling
Example: SELECT * FROM table WHERE condition;
Junior Software Engineer Trainee Interview Questions and Answers for Freshers
Q3. Find the time complexity of binary search of given numbers
Binary search has a time complexity of O(log n) where n is the number of elements in the array.
Time complexity is O(log n) as it divides the array in half at each step
Best case is O(1) when the element is found at the middle of the array
Worst case is O(log n) when the element is not present in the array
Q4. What is Oops? and what is inheritance
Oops stands for Object-Oriented Programming. Inheritance is a mechanism in which a new class inherits properties and behaviors from an existing class.
Oops stands for Object-Oriented Programming
Inheritance allows a new class to inherit properties and behaviors from an existing class
Inheritance promotes code reusability and helps in creating a hierarchical relationship between classes
Q5. What is key and explain its type
A key is a unique identifier used to access or retrieve data in a data structure.
A key is used in key-value pairs to uniquely identify the value associated with it.
Keys are commonly used in dictionaries, hash tables, and databases.
Examples of keys include employee IDs, product codes, and usernames.
Q6. What is encapsulation in dot net
Encapsulation in .NET is the concept of bundling data and methods that operate on the data into a single unit, known as a class.
Encapsulation helps in hiding the internal state of an object and restricting access to it.
It allows for better control over the data by preventing outside code from directly accessing or modifying it.
Access to the data is provided through methods, which can enforce validation rules or perform additional logic.
For example, a class representing a bank...read more
Share interview questions and help millions of jobseekers 🌟
Q7. Oops in python and different concepts in oops
Object-oriented programming (OOP) in Python involves concepts like classes, objects, inheritance, polymorphism, and encapsulation.
Classes are blueprints for creating objects with attributes and methods.
Objects are instances of classes that can store data and perform actions.
Inheritance allows a class to inherit attributes and methods from another class.
Polymorphism enables objects to be treated as instances of their parent class.
Encapsulation restricts access to certain compo...read more
Q8. Joins to table and fetch data
Joins are used to combine rows from two or more tables based on a related column between them.
Use JOIN keyword to combine tables based on a related column
Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN
Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column
Q9. Why do you choose software
I choose software because of my passion for problem-solving and creating innovative solutions.
Passion for problem-solving
Interest in creating innovative solutions
Opportunity for continuous learning and growth
Desire to work in a dynamic and fast-paced industry
Q10. What is the opps
Object-oriented programming (OOP) is a programming paradigm based on the concept of objects, which can contain data in the form of fields (attributes) and code in the form of procedures (methods).
OOP focuses on creating reusable code by organizing data and behavior into objects.
Key principles of OOP include encapsulation, inheritance, and polymorphism.
Examples of OOP languages include Java, C++, and Python.
Interview Questions of Similar Designations
Interview experiences of popular companies
Calculate your in-hand salary
Confused about how your in-hand salary is calculated? Enter your annual salary (CTC) and get your in-hand salary
Reviews
Interviews
Salaries
Users/Month