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TRON Softech Java Developer Interview Questions and Answers
TRON Softech Java Developer Interview Experiences
1 interview found
Anonymous
4 coding questions easy to medium difficulty
(1 Question)
- Q1. Easy questions on salary discussion
Top trending discussions
Interview questions from similar companies
(2 Questions)
- Q1. Explain architecture of your project
- Q2. Some questions on Java, Spring Boot and sql
(2 Questions)
- Q1. Project flow and some behavioural questions
- Q2. Project contribution of yours
- Ans.
Developed a web application for tracking employee attendance and performance
Implemented user authentication and authorization using Spring Security
Utilized Hibernate for database interaction and data persistence
Designed and developed RESTful APIs for frontend integration
Used AngularJS for frontend development to create interactive user interfaces
(1 Question)
- Q1. Basic formalities before offer release
Interview Preparation Tips
(2 Questions)
- Q1. Explain how hashmap internally works
- Ans.
HashMap internally uses an array of linked lists to store key-value pairs.
HashMap uses hashing to determine the index of the key in the array.
If multiple keys hash to the same index, a linked list is used to store them.
When retrieving a value, the key is hashed to find the index and then the linked list is searched for the key.
- Q2. Difference between vector and Arraylist
- Ans.
Vector is synchronized and slower, ArrayList is unsynchronized and faster.
Vector is synchronized, ArrayList is not.
Vector is slower due to synchronization, ArrayList is faster.
Vector is legacy class, ArrayList is part of Java Collections framework.
Vector doubles its size when full, ArrayList increases by 50%.
Skills evaluated in this interview
Selected
I applied via Campus Placement and was interviewed in Apr 2024. There were 2 interview rounds.
Aptitude questions and some questions from PostgreSQL.
(5 Questions)
- Q1. Java fundamental questions?
- Q2. Collection Framework.
- Q3. 2-3 easy to medium Coding Questions.
- Q4. Questions from Object oriented programming in Java?
- Q5. Implementation of HashMap , LinkedList, HashSet, Heap?
- Ans.
HashMap, LinkedList, HashSet, and Heap are data structures commonly used in Java for storing and organizing data.
HashMap: key-value pairs, uses hashing to store and retrieve elements efficiently (e.g. HashMap
LinkedList: linear data structure, elements are stored in nodes with pointers to the next node (e.g. LinkedList
) HashSet: collection of unique elements, uses hashing to ensure uniqueness (e.g. Hash...
Interview Preparation Tips
- Java
- oops
- Collection Framework
Skills evaluated in this interview
(2 Questions)
- Q1. Comparable vs Comparator
- Ans.
Comparable is an interface used for natural ordering, while Comparator is used for custom ordering in Java.
Comparable interface is used to define the natural ordering of objects. It is implemented by the class whose objects are to be sorted.
Comparator interface is used to define custom ordering of objects. It is implemented by a separate class that compares objects based on specific criteria.
Example: Sorting a list of ...
- Q2. Difference between List and Set
- Ans.
List allows duplicate elements and maintains insertion order, while Set does not allow duplicates and does not maintain order.
List can contain duplicate elements, Set cannot
List maintains insertion order, Set does not guarantee order
List is implemented by classes like ArrayList, LinkedList, Set is implemented by classes like HashSet, TreeSet
Example: List
list = new ArrayList<>(); Set set = new HashSet<>();
Skills evaluated in this interview
Questions on permuation and combination
(2 Questions)
- Q1. Java core and advanced concepts
- Q2. Springboot annotations, spring mvc, spring security
(1 Question)
- Q1. Friendly questions
I applied via Approached by Company and was interviewed in Mar 2024. There were 3 interview rounds.
(1 Question)
- Q1. Regular core java, OOPS, Spring Boot questions. It was like a rapid-fire round.
(3 Questions)
- Q1. Coding question - find repeat elements in an array
- Q2. Project related questions
- Q3. Build a basic CRUD REST API endpoint
(3 Questions)
- Q1. Behavioral questions
- Q2. Technical questions about SpringBoot and microservices
- Q3. SQL question - third highest salary
Java Developer Interview Questions & Answers
Virtusa Consulting Services
Dharanidharan Palanisamy
posted on 2 Aug 2024
(2 Questions)
- Q1. How we can achieve load balancing in spring bot
- Ans.
Load balancing in Spring Boot can be achieved using various techniques such as server-side load balancing, client-side load balancing, and using a load balancer.
Server-side load balancing can be achieved by using technologies like Ribbon or Eureka in Spring Cloud.
Client-side load balancing can be implemented by using technologies like Feign or RestTemplate in Spring Cloud.
Using a load balancer like Nginx or Apache in f...
- Q2. Write SQL queries with conditional operator
- Ans.
SQL queries with conditional operator
Use CASE statement for conditional logic in SQL queries
Syntax: SELECT column_name, CASE WHEN condition THEN value1 ELSE value2 END AS new_column_name FROM table_name
Example: SELECT employee_name, CASE WHEN salary > 50000 THEN 'High' ELSE 'Low' END AS salary_category FROM employees
Skills evaluated in this interview
I applied via Job Portal and was interviewed in Mar 2024. There was 1 interview round.
(5 Questions)
- Q1. They basically asked questions related to your project.
- Q2. Then asked design patters and related questions to it.
- Q3. Asked SOLID principal of software development.
- Q4. Gave some coding questions related to Java array where I had to return the index of values whos total is 10.
- Q5. How you would connect springboot project with data base.
- Ans.
Use Spring Data JPA to connect Spring Boot project with database.
Add database configuration in application.properties or application.yml file
Create entity classes annotated with @Entity and @Table
Create repository interfaces extending JpaRepository
Use @Autowired annotation to inject repository in services or controllers
Skills evaluated in this interview
Ages, trains, profit losss, hcf lcm, clock, simple interest 30 min
Array string sorting algorithm
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