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HEPL - A Cavinkare Group Company Interview Questions and Answers
25 Interview questions
JDBC (Java Database Connectivity) is an API that enables Java applications to interact with databases using SQL.
DriverManager: Use DriverManager to establish a connection to the database. Example: Connection conn = DriverManager.getConnection(url, user, password);
JDBC URL: Specify the database URL in the connection string. Example: String url = 'jdbc:mysql://localhost:3306/mydb';
PreparedStatement: Use PreparedStat...
Exception handling in Java involves using try-catch blocks to manage errors gracefully and maintain application stability.
Use try-catch blocks to catch exceptions: try { // code that may throw an exception } catch (ExceptionType e) { // handle exception }
Use finally block for cleanup: try { // code } catch (Exception e) { // handle exception } finally { ...
Microservices communicate via APIs, messaging queues, or event-driven architectures to share data efficiently.
1. RESTful APIs: Services expose endpoints for data retrieval. Example: Service A calls Service B's API to get user details.
2. Messaging Queues: Use tools like RabbitMQ or Kafka for asynchronous communication. Example: Service A sends a message to a queue that Service B listens to.
3. gRPC: A high-performan...
Inner join is used to combine rows from two or more tables based on a related column between them.
Use INNER JOIN keyword in SQL to perform inner join
Specify the columns to join on using ON keyword
Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column
I am here to leverage my skills in troubleshooting and customer service to contribute to your team's success.
I have a strong background in IT support, having worked in various roles where I resolved hardware and software issues.
I am passionate about helping users and ensuring they have a seamless experience with their technology.
I am eager to learn and grow within your organization, contributing to team goals and ...
For loop is used to iterate over a collection of elements in Java.
Syntax: for(initialization; condition; update) { // code block }
Example: for(int i=0; i<10; i++) { System.out.println(i); }
Exception handling in Java manages runtime errors, ensuring program stability and providing a way to respond to unexpected conditions.
Java uses try, catch, and finally blocks for exception handling.
A try block contains code that may throw an exception.
Catch blocks handle specific exceptions, e.g., catch (IOException e) {}.
Finally block executes regardless of exception occurrence, e.g., finally { cleanup(); }.
Custo...
Collections in Java are frameworks that provide an architecture to store and manipulate a group of objects.
Collections provide interfaces (List, Set, Map) and classes (ArrayList, LinkedList, HashSet, HashMap) to store and manipulate groups of objects.
Collections framework includes algorithms to manipulate data structures like sorting, searching, etc.
Collections are more flexible and efficient than arrays in Java.
E...
A for loop is a control flow statement for executing a block of code repeatedly based on a condition.
Syntax: for(initialization; condition; increment/decrement) { // code block }
Example: for(int i = 0; i < 5; i++) { System.out.println(i); } // prints 0 to 4
Used for iterating over arrays or collections.
Can be nested: for(int i = 0; i < 3; i++) { for(int j = 0; j < 2; j++) { // code block } }
Enhanced for lo...
OOP in Java is a programming paradigm based on objects, enabling code reusability, encapsulation, inheritance, and polymorphism.
Encapsulation: Bundling data and methods that operate on the data within one unit (class). Example: private variables in a class.
Inheritance: Mechanism where one class inherits properties and behavior from another. Example: class Dog extends Animal.
Polymorphism: Ability to present the sam...
HEPL - A Cavinkare Group Company Interview Experiences
23 interviews found
Anonymous
I applied via Walk-in and was interviewed in Nov 2024. There was 1 interview round.
(4 Questions)
- Q1. String functionality
- Q2. Array functionality
- Q3. Some project questions
- Q4. Joins and write a syntax for inner join
- Ans.
Inner join is used to combine rows from two or more tables based on a related column between them.
Use INNER JOIN keyword in SQL to perform inner join
Specify the columns to join on using ON keyword
Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column
Abishek
(2 Questions)
- Q1. Simply they ask about you !
- Q2. Expectation
Gave me the assignment
(3 Questions)
- Q1. They valued my portfolio and my work
- Q2. Design Thinking
- Q3. Thought process
Interview Preparation Tips
I applied via Walk-in and was interviewed in Jul 2024. There was 1 interview round.
(3 Questions)
- Q1. Write an Update Query
- Ans.
Update query to modify data in a database table
Use UPDATE statement followed by table name
Set the column(s) to be updated using SET keyword
Specify the new values for the column(s) to be updated
Add WHERE clause to specify the condition for updating specific rows
- Q2. In Bootstrap how many columns are there ?
- Ans.
There are 12 columns in Bootstrap grid system.
Bootstrap grid system is divided into 12 columns.
Columns can be combined to create different layouts.
Example:
will create a column that spans half of the row.Answered by AIView 1 more answer- Q3. Is Java Interpreted or Compiler language ?
- Ans.
Java is a compiled language that is first compiled into bytecode and then interpreted by the Java Virtual Machine (JVM).
Java is first compiled into bytecode by the Java compiler.
The bytecode is then interpreted by the Java Virtual Machine (JVM) at runtime.
This combination of compilation and interpretation makes Java a compiled language with some interpreted features.
Answered by AIView 1 more answer
Interview Preparation Tips
Good place to learn and develop skills.
No Bond.
Skills evaluated in this interview
Mohkeshvaren S
(3 Questions)
- Q1. What is oops in java
- Q2. Oops concepts in java
- Ans.
Object-oriented programming concepts in Java
Encapsulation: bundling data and methods that operate on the data into a single unit
Inheritance: allows a class to inherit properties and behavior from another class
Polymorphism: ability of an object to take on many forms
Abstraction: hiding the implementation details and showing only the necessary features of an object
- Q3. Some questions in mysql
Skills evaluated in this interview
venkateshbabu kumar
I applied via Walk-in and was interviewed in Nov 2024. There was 1 interview round.
(2 Questions)
- Q1. Tell me aboutyourself
- Ans.
I am a dedicated Desktop Support Engineer with a passion for solving technical issues and enhancing user experience.
Over 5 years of experience in desktop support, troubleshooting hardware and software issues.
Proficient in Windows and Mac OS environments, having resolved over 1,000 support tickets.
Skilled in remote support tools like TeamViewer and Remote Desktop, improving response time by 30%.
Strong communication skil...
- Q2. Why you come this interview
- Ans.
I am here to leverage my skills in troubleshooting and customer service to contribute to your team's success.
I have a strong background in IT support, having worked in various roles where I resolved hardware and software issues.
I am passionate about helping users and ensuring they have a seamless experience with their technology.
I am eager to learn and grow within your organization, contributing to team goals and impro...
Interview Preparation Tips
I applied via Walk-in and was interviewed in May 2024. There was 1 interview round.
(3 Questions)
- Q1. What is for loop?
- Q2. Collection in java?
- Q3. Exception handling in Java?
Interview Preparation Tips
- Java basics
- Full stack course
Skills evaluated in this interview
Yogesh S
(1 Question)
- Q1. Static variable
UIUX94 Rathish.R .R
(2 Questions)
- Q1. Syntax for for loop
- Q2. Syntax for an array
Skills evaluated in this interview
(1 Question)
- Q1. How are you what are your strengths
I applied via Walk-in and was interviewed in May 2024. There was 1 interview round.
(2 Questions)
- Q1. For loop syntax?
- Q2. What is string in Java?
Skills evaluated in this interview
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