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Synechron Java Software Developer Interview Questions and Answers
7 Interview questions
Run time polymorphism is method overriding while compile time polymorphism is method overloading.
Compile time polymorphism is resolved at compile time while run time polymorphism is resolved at runtime.
Method overloading is an example of compile time polymorphism while method overriding is an example of run time polymorphism.
Compile time polymorphism is faster than run time polymorphism as it is resolved at compil...
Exceptions in Rest APIs are handled using try-catch blocks and appropriate error responses.
Use try-catch blocks to catch exceptions that may occur during API execution.
Handle different types of exceptions separately to provide specific error responses.
Return appropriate HTTP status codes and error messages in the response.
Log the exception details for debugging purposes.
Consider using a global exception handler to...
The highest limit of HashMap is Integer.MAX_VALUE, which is 2^31 - 1.
The highest limit is determined by the maximum capacity of an array in Java, which is Integer.MAX_VALUE.
The default initial capacity of a HashMap is 16, and it automatically increases its capacity as needed.
If the number of elements exceeds the maximum capacity, an OutOfMemoryError will be thrown.
Streams in Java are a sequence of elements that can be processed in parallel or sequentially.
Streams are used to perform operations on collections of data in a concise and functional way.
They can be used to filter, map, reduce, and sort data.
Streams can be processed in parallel to improve performance.
Examples of stream methods include filter(), map(), reduce(), and sorted().
HashMap is a data structure that stores key-value pairs and provides constant time complexity for basic operations.
HashMap uses hashing to store and retrieve elements
It allows null values and only one null key
Collisions are resolved using separate chaining or open addressing
The initial capacity and load factor can be specified during initialization
The size of the HashMap is dynamically increased as elements are ad...
To convert list to arraylist, use ArrayList constructor. To convert arraylist to list, use List constructor.
To convert list to arraylist, use ArrayList constructor and pass the list as parameter.
To convert arraylist to list, use List constructor and pass the arraylist as parameter.
Example: List<String> list = Arrays.asList("one", "two", "three");
ArrayList<String> arrayList = new ArrayList<>(list)...
Functional interfaces are interfaces with only one abstract method. They are used for lambda expressions and method references.
Functional interfaces are used for functional programming in Java.
They are used for lambda expressions and method references.
They have only one abstract method.
Examples of functional interfaces are Runnable, Callable, and Comparator.
Functional interfaces can be annotated with @FunctionalIn...
Synechron Java Software Developer Interview Experiences
1 interview found
I appeared for an interview in Feb 2022.
(7 Questions)
- Q1. Run time polymorphism vs compile time polymorphism
- Ans.
Run time polymorphism is method overriding while compile time polymorphism is method overloading.
Compile time polymorphism is resolved at compile time while run time polymorphism is resolved at runtime.
Method overloading is an example of compile time polymorphism while method overriding is an example of run time polymorphism.
Compile time polymorphism is faster than run time polymorphism as it is resolved at compile tim...
- Q2. Internal working of HashMap
- Ans.
HashMap is a data structure that stores key-value pairs and provides constant time complexity for basic operations.
HashMap uses hashing to store and retrieve elements
It allows null values and only one null key
Collisions are resolved using separate chaining or open addressing
The initial capacity and load factor can be specified during initialization
The size of the HashMap is dynamically increased as elements are added
- Q3. How do you handle exceptions in Rest APIs
- Ans.
Exceptions in Rest APIs are handled using try-catch blocks and appropriate error responses.
Use try-catch blocks to catch exceptions that may occur during API execution.
Handle different types of exceptions separately to provide specific error responses.
Return appropriate HTTP status codes and error messages in the response.
Log the exception details for debugging purposes.
Consider using a global exception handler to cent...
- Q4. What is the highest limit of Hashmap?
- Ans.
The highest limit of HashMap is Integer.MAX_VALUE, which is 2^31 - 1.
The highest limit is determined by the maximum capacity of an array in Java, which is Integer.MAX_VALUE.
The default initial capacity of a HashMap is 16, and it automatically increases its capacity as needed.
If the number of elements exceeds the maximum capacity, an OutOfMemoryError will be thrown.
- Q5. What are functional interfaces? What is the need to have functional interfaces?
- Ans.
Functional interfaces are interfaces with only one abstract method. They are used for lambda expressions and method references.
Functional interfaces are used for functional programming in Java.
They are used for lambda expressions and method references.
They have only one abstract method.
Examples of functional interfaces are Runnable, Callable, and Comparator.
Functional interfaces can be annotated with @FunctionalInterfa...
- Q6. What are streams in Java and why are they used?
- Ans.
Streams in Java are a sequence of elements that can be processed in parallel or sequentially.
Streams are used to perform operations on collections of data in a concise and functional way.
They can be used to filter, map, reduce, and sort data.
Streams can be processed in parallel to improve performance.
Examples of stream methods include filter(), map(), reduce(), and sorted().
- Q7. How do you convert list to arraylist? And vice versa
- Ans.
To convert list to arraylist, use ArrayList constructor. To convert arraylist to list, use List constructor.
To convert list to arraylist, use ArrayList constructor and pass the list as parameter.
To convert arraylist to list, use List constructor and pass the arraylist as parameter.
Example: List<String> list = Arrays.asList("one", "two", "three");
ArrayList<String> arrayList = new ArrayList<>(list);
Exam...
Interview Preparation Tips
This means that along with definition, understand how something was done initially, how it has now changed, why was there a need for change, the advantages, the drawbacks, internal workings etc.
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
Software Engineer Interview Questions & Answers
Virtusa Consulting Services
Anonymous
posted on 7 May 2022
I applied via Campus Placement and was interviewed before May 2021. There were 2 interview rounds.
Basic aptitude knowledge
Strong in java
Interview Preparation Tips
I applied via Naukri.com and was interviewed before Sep 2019. There were 6 interview rounds.
Interview Questionnaire
3 Questions
- Q1. IQ Test
- Q2. Machine Test
- Q3. Face To Face
Interview Preparation Tips
1. IQ Test
2. Machine Test
3. Face to Face
IQ Test is not so tough but prepare well Machine Test
Machine Test Question are like :-
Q.1 - We declare a variable in C++ like "is_this_a_variable" and in Java like "IsThisAVariable". There is underscore in between every word and first alphabet of every word is in lowercase in C++ and in Java first alphabet is in capital without underscore. Create a program in which if user input a string in a C++ variable format it will convert the input in java variable format.
Q2. Count the frequency of a string.
user input string - pqhphi
output-
p - 2
q - 1
h - 2
i - 1
Be strong in algorithms and data structure.
Software Developer Interview Questions & Answers
Virtusa Consulting Services
Anonymous
posted on 15 Sep 2021
I appeared for an interview before Sep 2020.
(2 Questions)
Round duration - 90 minutes
Round difficulty - Easy
It happens in very friendly manner.
- Q1.
Paths in a Matrix Problem Statement
Given an 'M x N' matrix, print all the possible paths from the top-left corner to the bottom-right corner. You can only move either right (from (i,j) to (i,j+1)) or dow...
- Ans.
Print all possible paths from top-left to bottom-right in a matrix by moving only right or down.
Use backtracking to explore all possible paths from top-left to bottom-right in the matrix.
At each cell, recursively explore moving right and down until reaching the bottom-right corner.
Keep track of the current path and add it to the result when reaching the destination.
- Q2. Can you create 2 tables in SQL and perform different operations on them?
- Ans.
Yes, I can create 2 tables in SQL and perform operations like INSERT, SELECT, UPDATE, and DELETE.
Create Table 1: CREATE TABLE employees (id INT, name VARCHAR(50), salary DECIMAL(10,2));
Create Table 2: CREATE TABLE departments (dept_id INT, dept_name VARCHAR(50));
Insert Data: INSERT INTO employees VALUES (1, 'John Doe', 50000);
Select Data: SELECT * FROM employees WHERE salary > 40000;
Update Data: UPDATE employees SET...
Round duration - 90 minutes
Round difficulty - Medium
No problem occur very friendly environment.
(1 Question)
Round duration - 90 minutes
Round difficulty - Hard
- Q1.
Rat in a Maze Problem Statement
You need to determine all possible paths for a rat starting at position (0, 0) in a square maze to reach its destination at (N-1, N-1). The maze is represented as an N*N ma...
- Ans.
Find all possible paths for a rat in a maze from source to destination.
Use backtracking to explore all possible paths in the maze.
Keep track of visited cells to avoid revisiting them.
Explore all possible directions (up, down, left, right) from each cell.
Add the current direction to the path and recursively explore further.
If the destination is reached, add the path to the list of valid paths.
Interview Preparation Tips
Tip 1 : Competitive programming plays a major role when you are appearing for coding rounds as a fresher. In the coding rounds, you won't get direct problems copied from Geeksforgeeks or Leetcode. You would be required to use your logical thinking to go ahead in the process. This is where competitive programming helps.
Tip 2 : Coding rounds are all about Coding + Timing. Most people fail to excel due to the pressure of a timer ticking on your head. So, instead of just solving problems, try to participate in timed contests. This will help you be used to the pressure of the timer.
Tip 3 : Many big companies like Microsoft, Amazon, and even Google expect you to be good at standard problems. So, once you are done with coding round by your logical skills and competitive programming, you must be well versed with some standard problems in order to excel.
Application resume tips for other job seekersTip 1 : Make it short, crisp, and simple. It is always good to have a 1 pager resume.
Tip 2 : Resume must comprise of the following: Educational Qualifications, Technical skills, Projects, Work experience (if any), Achievements. Other than this, you may include some extra co-curricular achievements.
Skills evaluated in this interview
Interview Questionnaire
6 Questions
- Q1. Tell me about your project
- Ans.
Developed a web-based project management tool for a startup
Used React for the frontend and Node.js for the backend
Implemented user authentication and authorization using JWT
Integrated with third-party APIs such as Trello and Slack
Implemented real-time updates using WebSockets
Deployed on AWS using EC2 and RDS
- Q2. Write the idea or algorithm for d program of fibonacci series
- Q3. One question from your subject
- Q4. Introduce yourself
- Ans.
I am a software engineer with experience in developing web applications and mobile apps.
Proficient in programming languages such as Java, Python, and JavaScript
Skilled in using frameworks like React, Angular, and Spring Boot
Experienced in working with databases such as MySQL and MongoDB
Familiar with Agile development methodologies and DevOps practices
- Q5. If I give you a box full of pencils..in how many ways can you use it
- Q6. Do you have any question for me
Interview Preparation Tips
Experience: Time management is very important to clear the aptitude test. Besides this a lot of practice is also very important. This round is the major filteration round. Though each round is a major filteration round cuz NTT DATA is not a bulk recruiter like cts, infy etc. Almost 2-3 thousand students were there for this round from 6 different colleges and only 100 of them were selected.
Tips: Its better to start with the preparation from before and do consider the previous year placement papers available at indiabix. You can practice more n more. Apart from this you can go through the r.s aggarwal aptitude book also.
Round: Group Discussion
Experience: There were many panels and each panel had 10-12 students. The H.r first decided some other topic but when he asked wether everybody is aware of the topic ..there were few who didn't know about it. .so he picked up another topic. Fortunately he asked me to start with the discussion. Always try to be the one to break the ice.
Tips: The only key to crack this round is that yku should talk. You should definitely not confuse gd with debate. You should not argue or by any chance shouldn't sound arrogant.
Round: Technical Interview
Experience: They will definitely ask about your project so be thorough with that. Ntt data is a Japanese company . Though this is IT but it will ask from the subject of your own choice from people those who have a non IT background. After you get shortlisted in d gd they will give you a form to fill. Do fill that form without fail. If it is blank then even if u go to the hr round he will reject you.
Tips: Just be confident and always smile. Be careful on what you write in your resume cuz they can ask about anything based on your resume.
Round: HR Interview
Experience: This round was a cake walk. Just be confident and updated about the company. Do ask him a question if he asks you to do that.but make sure it shouldn't be vague or out of the picture.
Tips: Keep smiling and don't get nervous. If they ask you about location preferences, dun get firm at one place.try to be flexible.
General Tips: Donot loose hope at any cost. You never know when your moment is going to arrive. Do practice the aptitude as much as you can. Finally NTT DATA selected only 50 overall in wch 11 were from my college n i was lucky to be one of them. the offer letter was issued the same day and we were all venerated. Its just a game of confidence. All the best
Skill Tips: Try to add some co curricular activities and justify your role.
Skills: communication, technical knowledge, management skills, leadership
College Name: SATHYABAMA UNIVERSITY
Motivation: You will find the it companies mostly head quartered in U.S but this company is in Japan. Plus you have better opportunity and growth compared to other companies cuz its not a bulk recruiter.
Skills evaluated in this interview
kalyan yashwanth
Interview Questionnaire
2 Questions
- Q1. Java ( socket programming, OOPS, DS )
- Q2. Write about your dream
- Ans.
My dream is to build innovative software solutions that positively impact people's lives.
Developing cutting-edge technology
Creating user-friendly interfaces
Solving complex problems
Collaborating with talented individuals
Making a difference in society
Continuous learning and growth
Interview Preparation Tips
Experience: GRE givers , you can make it through this. Brush up your technical skills for the programming section.
Tips: GRE quant and verbal and quick review from tutorialspoint.com would do the trick.
Round: Group Discussion
Experience: I had fun. I won a few debate competitions in various technical symposiums so, It gave a good experience about being quiet at the right moment.
Tips: Turn to your GRAB-ON mode. Never miss any chance. Learn to know when to be quiet and when to talk in a GD. Try to bring down the heat If two participants are getting into a argumentative discussion.
Round: Stress Interview
Experience: It was really difficult. Exactly after the GD, we were asked to right an essay in a very less time and our capability to manage the stress was observed.
Tips: Be calm and write all that you know in a presentable way.
Round: Technical Interview
Experience: I did a project in my 3rd year which included few concepts on Socket programming which helped me a bit in this round. I answered confidently and I was put to a confidence test too to see how sure I was about the answer.
Tips: A quick review on the day of interview and involving in friendly discussion about programming languages before the test helps.
Round: HR Interview
Experience: I was asked few technical questions in this round and later moved on to the general logical questions. Questions like, cutting a bread into multiple slices, finding the corresponding switch among 3 switches for 3 bulbs in room were asked. Find the sum of 1-10 in 4 seconds was asked suddenly. Thanks to Arithmetic Progressions :P.
Tips: Use your logical ability to answer.
Skills: Java, C, Body Language, Mental ability, Confidence.
College Name: Malla Reddy Institute of Engineering & Technology ( MRIET )
Motivation: Ranked among the top 50 of the Fortune 500. Expanding organizations which include lot of opportunities.
Interview Preparation Tips
Experience: This round they want to know about why do you want to leave your job?
current ctc
expected ctc
how many experience do you have on particular technology?
Tips: this round is simple you have to tell all the details of your profile and if they want this profile candidate they shortlisted you..
they want positive response, so be positive.
Software Developer Interview Questions & Answers
Virtusa Consulting Services
avinash patnala
posted on 13 Jan 2015
Interview Preparation Tips
Experience: Quite easy..It contains mcq and one programming question. MCQ covers databases,sql,software testing,c++
Tips: You can easily pass the test,no need to worry
Round: Interview
Experience: Questions are among databases and java,they will ask u fav subj and asks questions in that
Tips: Through with ur fav subject..be confident, simple anad basic questions,try to solve secreening test question using java language
Round: Interview
Experience: Its better to say technical only,the hr also asks about test pattren.programming question.then normal HR questions
Tips: It better to do some research about the company,overall it's easy and cake walk for those who are strong in java and databases
General Tips: CSE guys can easily clear that test and interview..without any hesitattion
Skills: Java,databases, SQL, C, General Aptitude
College Name: NIT Warangal
Motivation: Virtusa is emerging company
Funny Moments: In interview they asked about my girl friend,her name andwhen ur are going to marry. answer them in a funny way with smile in your face
Interview Preparation Tips
Experience: In the first round there was an online test. Questions were from aptitude, general English and a simple code( very simple if you have programming skills).
Tips: It was purely a knowledge based round so everything depends on your preparation level and a bit confidence.
Round: Technical Interview
Experience: In technical round interview the process was like this...
I entered in room and greeted interviewer and he asked me to sit down. I handed over my resume to him. His first question was tell me about yourself. Then my projects. After that he came on programming, He asked me very basic concept about C++. Questions were like what is polymorphism, What is encapsulation. He also asked program of fibonacci series. After all these question he again looked at my resume and asked me 'why your CGPA is low?' I said that when i was in my first year i had interest in electronics but later when i encountered with programming i decided to have my career in this field so i could not concentrate on my core subjects.
Tips: C++ is '''''must''''' for Virtusa if you are from electronics . I didn't know data structure but c++ was on my fingers. Answer question with confidence.
Round: HR Interview
Experience: HR interview was really cool. Interview asked me about myself, my family, real life applications of my project. After that he came on real stuff. He asked question like why do you want to join virtusa? I said virtusa is this .. virtusa is this.....and many more..and in last i said this is i want to join virtusa. Next question was ' what do think about dowry?'. At first i was surprised to hear this question but i realized that interview only want to check my ability to speak on random topic. I answered the question by criticizing dowry and he was pleased to hear my answer. After one or two general HR question like location preference , he told me that your interview is over please wait outside for result. It was really nice to meet you . Thank you.
Tips: Never stop speaking in HR interview. They only check your ability to speak on random topics and their general HR question. I was continuously speaking ...please do not bother about grammar while speaking ...just speak with confidence(relevant).
General Tips: prepare c , c++ and ability to speak in front of interviewer.
Skills: Basic Coding, Aptitude, 1)communication
College Name: NIT Jalandhar
Nihal Bisen
Interview Questionnaire
13 Questions
- Q1. Indroduce yourself ?
- Ans.
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
- Q2. Difference between method overloading and methode overriding ?
- Ans.
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...
- Q3. Difference between switch case and if else statement?
- Ans.
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...
- Q4. What is interface and abstract class?
- Ans.
Interface and abstract class are both used for abstraction in object-oriented programming.
An interface is a collection of abstract methods that define a contract for a class to implement.
An abstract class is a class that cannot be instantiated and may contain abstract methods.
Interfaces are used to achieve multiple inheritance in Java.
Abstract classes can have non-abstract methods and instance variables.
An example of a...
- Q5. Whats is polymorphisom?
- Ans.
Polymorphism is the ability of an object to take on many forms.
It allows objects of different classes to be treated as if they were objects of the same class.
It is achieved through method overriding and method overloading.
Example: A shape class can have multiple subclasses like circle, square, etc. and all can be treated as shapes.
Example: A method can have different implementations in different classes but with the sa...
- Q6. What is inherritance ?
- Ans.
Inheritance is a mechanism in object-oriented programming where a new class is created by inheriting properties of an existing class.
Inheritance allows code reusability and saves time and effort in writing new code.
The existing class is called the parent or base class, and the new class is called the child or derived class.
The child class inherits all the properties and methods of the parent class and can also add its ...
- Q7. Default case in switch case
- Ans.
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
- Q8. Introduce yourself apart from resume?
- Ans.
I am a passionate software developer with a strong background in web development and a love for problem-solving.
Experienced in HTML, CSS, JavaScript, and various web development frameworks
Proficient in backend development using languages like Java, Python, and Node.js
Familiar with database management systems such as MySQL and MongoDB
Strong problem-solving skills and ability to work well in a team environment
- Q9. What is your weaknesses ?
- Ans.
I tend to get overly focused on details, which can sometimes slow down my progress.
I have a tendency to spend too much time on perfecting small details
I sometimes struggle with prioritizing tasks due to my focus on details
I am working on improving my time management skills to balance detail-oriented work with efficiency
- Q10. Do you have any offer from any other company ?
- Ans.
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
- Q11. Which company would you like to join apart from sapient ?
- Ans.
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.
- Q12. Have you ever worked in a team?
- Ans.
Yes, I have worked in multiple teams in various projects.
Worked in a team of developers to create a new software application
Collaborated with designers, testers, and project managers to meet project deadlines
Participated in daily stand-up meetings to discuss progress and roadblocks
- Q13. 8 metals bolls are similar ?
- Ans.
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.
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