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CA-One Tech Cloud Java Developer Interview Questions and Answers

Updated 23 Nov 2024

CA-One Tech Cloud Java Developer Interview Experiences

2 interviews found

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

I was having a coding test related to oops concept.

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed before Feb 2023. There were 3 interview rounds.

Round 1 - Aptitude Test 

Normal not soo tough

Round 2 - Coding Test 

Logical question based on pattern and string

Round 3 - Technical 

(1 Question)

  • Q1. Based on data structure, Java and aql query

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepared well for ds

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I applied via Naukri.com and was interviewed before May 2021. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. Basic java concepts like collection frame work, exception handling

Interview Preparation Tips

Interview preparation tips for other job seekers - Learn basics well, be confident, show you are flexible enough to learn

I applied via Company Website

Interview Questionnaire 

1 Question

  • Q1. Java

Interview Preparation Tips

Interview preparation tips for other job seekers - Yes

I applied via Campus Placement and was interviewed before Jul 2021. There were 2 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. 1 . Oops concept in detail 2 DBMS 3. Data base query
Round 2 - HR 

(1 Question)

  • Q1. Document verification

Interview Preparation Tips

Interview preparation tips for other job seekers - For freshers should be clear on basic concepts.
For experienced should be detailed knowledge on their domain.

I applied via Campus Placement and was interviewed before Oct 2020. There was 1 interview round.

Interview Questionnaire 

2 Questions

  • Q1. What is encapsulation ?
  • Ans. 

    Encapsulation is the process of hiding implementation details and providing access to only necessary information.

    • Encapsulation helps in achieving data abstraction and information hiding.

    • It allows for better control over data and prevents unauthorized access.

    • In Java, encapsulation is achieved through the use of access modifiers such as private, public, and protected.

    • For example, a class may have private variables that c...

  • Answered by AI
  • Q2. What is the meaning of string.
  • Ans. 

    A string is a sequence of characters used to represent text in programming.

    • Strings are often used for storing and manipulating text data.

    • In Java, strings are represented by the String class.

    • Strings can be concatenated using the + operator.

    • Strings are immutable, meaning they cannot be changed once created.

    • Examples of string literals include "hello world" and "42".

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - do not tell about salary expectations

Skills evaluated in this interview

I was interviewed in Jul 2017.

Interview Questionnaire 

6 Questions

  • Q1. What is autoboxing and unboxing
  • Ans. 

    Autoboxing is the automatic conversion of primitive data types to their corresponding object wrapper classes.

    • Autoboxing is useful when working with collections that require objects instead of primitives.

    • Example: int i = 5; Integer j = i; //autoboxing

    • Unboxing is the opposite of autoboxing, where an object of a wrapper class is converted back to its corresponding primitive type.

    • Example: Integer j = 5; int i = j; //unboxi

  • Answered by AI
  • Q2. What is typecasting UP AND DOWN
  • Ans. 

    Typecasting up and down refers to converting a variable of one data type to another data type of higher or lower precision.

    • Typecasting up involves converting a variable of lower precision to a variable of higher precision, such as converting an int to a double.

    • Typecasting down involves converting a variable of higher precision to a variable of lower precision, such as converting a double to an int.

    • Typecasting can resul...

  • Answered by AI
  • Q3. How do you iterate map
  • Ans. 

    To iterate a map in Java, use a for-each loop or an iterator.

    • Use the entrySet() method to get a set of key-value pairs

    • For-each loop: for(Map.Entry entry : map.entrySet())

    • Iterator: Iterator> iterator = map.entrySet().iterator();

    • Use hasNext() and next() methods to iterate through the map

  • Answered by AI
  • Q4. Types of synchronisation in java
  • Ans. 

    Types of synchronization in Java

    • Synchronized methods

    • Synchronized statements

    • ReentrantLock

    • Semaphore

    • CountDownLatch

  • Answered by AI
  • Q5. Access modifiers in method overriding
  • Ans. 

    Access modifiers in method overriding

    • Access modifiers in the overriding method cannot be more restrictive than the overridden method

    • The access modifier can be less restrictive or the same as the overridden method

    • Private methods cannot be overridden

    • Examples: public method can be overridden by public or protected method, but not by private method

  • Answered by AI
  • Q6. Covarient return type

Skills evaluated in this interview

I was interviewed in Jun 2017.

Interview Preparation Tips

Round: Technical Interview
Experience: They asked java basics,
what we wrote in resume will ask
about project
Tips: please prepare basics things

Interview Preparation Tips

Round: Test
Experience: I almost sove 130 question
Duration: 2 hours
Total Questions: 150

Round: Group Discussion
Experience: Problem Solving Algorithms
Duration: 3 hours

I applied via Naukri.com and was interviewed in Aug 2018. There were 5 interview rounds.

Interview Questionnaire 

4 Questions

  • Q1. 1.Core java 2.Spring 3. Hibernate 4. Spring Boot 5. SQL 6. AngularJS
  • Ans. 

    The question is asking about the candidate's knowledge in Core Java, Spring, Hibernate, Spring Boot, SQL, and AngularJS.

    • Core Java is the foundation of Java programming language.

    • Spring is a popular framework for building Java applications.

    • Hibernate is an ORM tool used for mapping Java objects to database tables.

    • Spring Boot is a framework for building microservices.

    • SQL is a language used for managing relational databases...

  • Answered by AI
  • Q2. 1. How to connect 2 DBs from spring boot application
  • Ans. 

    To connect 2 DBs from a Spring Boot application, configure multiple data sources and use JdbcTemplate or EntityManager for each DB.

    • Configure multiple data sources in the application.properties file

    • Create separate configuration classes for each data source

    • Use JdbcTemplate or EntityManager to interact with each DB

    • Specify the appropriate data source in the repository or service classes

  • Answered by AI
  • Q3. 2. Difference between abstract method implementation and default method
  • Ans. 

    Abstract method implementation is mandatory while default method is optional.

    • Abstract method has no implementation in the abstract class and must be implemented by the subclass.

    • Default method has a default implementation in the interface and can be overridden by the implementing class.

    • Abstract method is used to enforce a contract while default method is used to provide a default behavior.

    • Example: abstract method - publ...

  • Answered by AI
  • Q4. 1. About salary and expectation

Interview Preparation Tips

Round: Test
Experience: Technical written test

General Tips: Terrible interview. HR told to give 11% hike with 6% variable and 5% fixed. I kicked off the company.
Skills: Web Technologies, Java Application Development
Duration: 1-4 weeks

Skills evaluated in this interview

CA-One Tech Cloud Interview FAQs

How many rounds are there in CA-One Tech Cloud Java Developer interview?
CA-One Tech Cloud interview process usually has 2 rounds. The most common rounds in the CA-One Tech Cloud interview process are Coding Test, Aptitude Test and Technical.
How to prepare for CA-One Tech Cloud Java Developer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at CA-One Tech Cloud. The most common topics and skills that interviewers at CA-One Tech Cloud expect are Java, Spring Boot, Microservices, Multithreading and OOPS.

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CA-One Tech Cloud Java Developer Interview Process

based on 3 interviews

Interview experience

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3.5

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Company culture

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