L&T Technology Services Java Developer Interview Questions and Answers

I am a software developer with experience in various programming languages and frameworks.

• Proficient in Java, C++, and Python

• Familiar with web development using HTML, CSS, and JavaScript

• Experience with database management systems such as MySQL and MongoDB

• Strong problem-solving and analytical skills

• Worked on projects involving machine learning and artificial intelligence

Method overloading is having multiple methods with the same name but different parameters. Method overriding is having a subclass method with the same name and parameters as a superclass method.

• Method overloading is used to provide different ways of calling the same method with different parameters.

• Method overriding is used to provide a specific implementation of a method in a subclass that is already defined in the su...read more

Switch case is used for multiple conditions while if else is used for binary conditions.

• Switch case is faster than if else for multiple conditions.

• If else can handle complex conditions while switch case cannot.

• Switch case can only compare values of the same data type.

• If else can handle null values while switch case cannot.

• Example: switch (day) { case 1: console.log('Monday'); break; case 2: console.log('Tuesday'); brea...read more

Default case in switch case statement

• Default case is executed when no other case matches the switch expression

• It is optional and can be placed anywhere in the switch statement

• It is often used to handle unexpected input or errors

• It should always be the last case in the switch statement

Yes, I have received offers from two other companies.

• Received offers from Company A and Company B

• Currently evaluating all offers to make an informed decision

• Considering factors like company culture, growth opportunities, and compensation

I would like to join Google because of their innovative projects and work culture.

• Google is known for its cutting-edge technology and innovative projects.

• They have a strong focus on employee well-being and work-life balance.

• Google offers opportunities for career growth and development.

• The company has a diverse and inclusive work culture.

• Google is a leader in the tech industry with a global presence.

Yes, they are similar.

• All 8 metal balls are of the same material.

• They have the same size and weight.

• They have the same physical properties.

• They are interchangeable in any given situation.

Developed a web-based inventory management system for a retail company.

• Used HTML, CSS, and JavaScript for the front-end development.

• Implemented a RESTful API using Node.js and Express for the back-end.

• Utilized a MySQL database to store and manage inventory data.

• Implemented features like product search, order management, and reporting.

• Ensured data security and user authentication using encryption and JWT.

• Collaborated wi...read more

The missing rupee is not actually missing. The calculation is misleading and does not account for the total amount paid.

• The initial amount paid by each person was Rs.10, totaling Rs.30.

• The owner gave them a discount of Rs.5, so they paid Rs.25 in total.

• The broker took Rs.2, leaving them with Rs.23.

• When the broker returned Rs.1 to each person, they each received Rs.1 back, totaling Rs.3.

• So, the total amount paid by the ...read more

Inheritance in Java allows a class to inherit properties and methods from another class.

• Inheritance is achieved using the 'extends' keyword.

• The class that is being inherited from is called the superclass or parent class.

• The class that inherits from the superclass is called the subclass or child class.

• Subclasses can access the public and protected members of the superclass.

• Inheritance promotes code reusability and allow...read more

A program to check if a given number is a palindrome or not.

• Convert the number to a string.

• Reverse the string and compare it with the original string.

• If they are equal, the number is a palindrome.

• If not, the number is not a palindrome.

Normalisation is the process of organizing data in a database to reduce redundancy and improve data integrity.

• It involves breaking down a table into smaller tables and defining relationships between them.

• Normalization helps to eliminate data inconsistencies and anomalies.

• There are different levels of normalization, with each level having specific rules to follow.

• For example, first normal form (1NF) requires that each t...read more

I would be ready to accept a project in Java even if I was trained in DotNet earlier.

• I have a strong foundation in programming principles and concepts, which can be applied to any language.

• I am confident in my ability to quickly learn and adapt to new technologies.

• I have experience working with multiple programming languages and frameworks.

• I can leverage my knowledge of DotNet to understand similar concepts in Java.

• I a...read more

I want to join Sapient because of its reputation for innovative projects and collaborative work environment.

• Sapient is known for working on cutting-edge projects that push the boundaries of technology

• I value the collaborative work environment at Sapient, where team members support each other to achieve success

• I am impressed by Sapient's commitment to professional development and growth opportunities for employees

My expectations from Sapient

• I expect Sapient to provide a challenging and innovative work environment

• I expect Sapient to offer opportunities for professional growth and learning

• I expect Sapient to have a collaborative and supportive team culture

• I expect Sapient to provide competitive compensation and benefits

• I expect Sapient to have a strong focus on quality and delivering excellent software solutions