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Infosys Application Developer Interview Questions and Answers
8 Interview questions
React has several life cycle methods that are called at different stages of a component's life cycle.
componentDidMount() is called after the component has been rendered to the DOM
componentDidUpdate() is called after the component's updates are flushed to the DOM
componentWillUnmount() is called before the component is removed from the DOM
Ref cursor is a pointer to a result set in Oracle database.
Ref cursor is used to return query results from a stored procedure or function.
It allows the client application to fetch and process the result set.
Ref cursor is declared using the SYS_REFCURSOR type in Oracle PL/SQL.
Abstraction is the process of simplifying complex systems by focusing on essential details.
Abstraction allows developers to hide unnecessary details and only expose relevant information.
It helps in creating reusable code and improves code maintainability.
For example, in object-oriented programming, a class is an abstraction that encapsulates data and behavior.
Another example is the use of APIs, where developers in...
C++ is a compiled language while Java is an interpreted language.
C++ is faster than Java due to its compilation process.
Java has automatic garbage collection while C++ requires manual memory management.
C++ supports multiple inheritance while Java only supports single inheritance.
Java has a built-in exception handling mechanism while C++ requires manual exception handling.
C++ allows for pointer arithmetic while Jav...
DBMS stands for Database Management System. It is a software system that manages and organizes data in a database.
DBMS is used to create, modify, and delete databases and their objects.
It provides a way to store, retrieve, and manipulate data efficiently.
Examples of DBMS include MySQL, Oracle, SQL Server, and MongoDB.
Stream API in Java provides a way to process collections of objects in a functional style.
Stream API allows for easy manipulation of collections using functional programming concepts like map, filter, and reduce.
Example: List<String> names = Arrays.asList("Alice", "Bob", "Charlie"); names.stream().filter(name -> name.startsWith("A")).forEach(System.out::println);
Lambda expressions can be used with Stream AP...
SpringBootAnnotation is used to enable Spring Boot features in a Java application. @Controller is used for MVC pattern, @RestController is used for RESTful web services.
SpringBootAnnotation is used to enable Spring Boot features like auto-configuration, component scanning, etc.
@Controller is used for MVC pattern to handle web requests and return a view, while @RestController is used for RESTful web services to ret...
Microservices are small, independent, and loosely coupled services that work together to form a larger application.
Microservices are designed to be modular and scalable.
Each microservice performs a specific task and communicates with other microservices through APIs.
Microservices can be developed and deployed independently of each other.
They offer flexibility, fault tolerance, and faster time-to-market.
Examples of...
Infosys Application Developer Interview Experiences
10 interviews found
MANISH KUMAR
I applied via Naukri.com and was interviewed in Oct 2024. There was 1 interview round.
(2 Questions)
- Q1. What is @SpringbootAnnotation and what is difference between @Controller and @RestController.
- Ans.
SpringBootAnnotation is used to enable Spring Boot features in a Java application. @Controller is used for MVC pattern, @RestController is used for RESTful web services.
SpringBootAnnotation is used to enable Spring Boot features like auto-configuration, component scanning, etc.
@Controller is used for MVC pattern to handle web requests and return a view, while @RestController is used for RESTful web services to return d...
- Q2. What is Stream API write the Stream API Code any code and lambda expression.
- Ans.
Stream API in Java provides a way to process collections of objects in a functional style.
Stream API allows for easy manipulation of collections using functional programming concepts like map, filter, and reduce.
Example: List<String> names = Arrays.asList("Alice", "Bob", "Charlie"); names.stream().filter(name -> name.startsWith("A")).forEach(System.out::println);
Lambda expressions can be used with Stream API to ...
Interview Preparation Tips
Skills evaluated in this interview
Deepa Prabha
(2 Questions)
- Q1. Boxing Unboxing
- Q2. Abstract class and interface
Anonymous
I applied via Recruitment Consulltant and was interviewed in May 2024. There were 2 interview rounds.
(2 Questions)
- Q1. Functional component
- Q2. Life cycle method of react
- Ans.
React has several life cycle methods that are called at different stages of a component's life cycle.
componentDidMount() is called after the component has been rendered to the DOM
componentDidUpdate() is called after the component's updates are flushed to the DOM
componentWillUnmount() is called before the component is removed from the DOM
(2 Questions)
- Q1. Company experience
- Ans.
I have extensive experience in application development, focusing on creating user-friendly and efficient software solutions.
Developed a mobile application that increased user engagement by 30%.
Collaborated with cross-functional teams to enhance software functionality.
Implemented agile methodologies to streamline the development process.
Conducted user testing sessions to gather feedback and improve the application.
- Q2. Salary discussion
Interview Preparation Tips
- React js
Skills evaluated in this interview
Patterns programs, magical number problem
(2 Questions)
- Q1. Basic questions of frameworks
- Q2. Java, Spring, Spring Boot, Microservices
(1 Question)
- Q1. Brief in frameworks and frequent Answers
(1 Question)
- Q1. Explain Microservice, what is it, how it's work,
- Ans.
Microservices are small, independent, and loosely coupled services that work together to form a larger application.
Microservices are designed to be modular and scalable.
Each microservice performs a specific task and communicates with other microservices through APIs.
Microservices can be developed and deployed independently of each other.
They offer flexibility, fault tolerance, and faster time-to-market.
Examples of micr...
General coding questions from java
Spring boot application, how it's work?
(1 Question)
- Q1. One-to-one talk with HR for general purpose.
Skills evaluated in this interview
(1 Question)
- Q1. What is ref cursor
- Ans.
Ref cursor is a pointer to a result set in Oracle database.
Ref cursor is used to return query results from a stored procedure or function.
It allows the client application to fetch and process the result set.
Ref cursor is declared using the SYS_REFCURSOR type in Oracle PL/SQL.
I applied via Naukri.com and was interviewed in Aug 2023. There was 1 interview round.
(1 Question)
- Q1. Give the example of abstraction
- Ans.
Abstraction is the process of simplifying complex systems by focusing on essential details.
Abstraction allows developers to hide unnecessary details and only expose relevant information.
It helps in creating reusable code and improves code maintainability.
For example, in object-oriented programming, a class is an abstraction that encapsulates data and behavior.
Another example is the use of APIs, where developers interac...
Harnam Thakur
I applied via Referral and was interviewed in Dec 2021. There was 1 interview round.
Interview Questionnaire
3 Questions
- Q1. What is a DBMS,
- Ans.
DBMS stands for Database Management System. It is a software system that manages and organizes data in a database.
DBMS is used to create, modify, and delete databases and their objects.
It provides a way to store, retrieve, and manipulate data efficiently.
Examples of DBMS include MySQL, Oracle, SQL Server, and MongoDB.
- Q2. What do you know about our company
- Q3. What are the 2 difference between c++ and java
- Ans.
C++ is a compiled language while Java is an interpreted language.
C++ is faster than Java due to its compilation process.
Java has automatic garbage collection while C++ requires manual memory management.
C++ supports multiple inheritance while Java only supports single inheritance.
Java has a built-in exception handling mechanism while C++ requires manual exception handling.
C++ allows for pointer arithmetic while Java doe...
Interview Preparation Tips
Thanku
Skills evaluated in this interview
T Kalyani
Interview Questionnaire
1 Question
- Q1. Questions related to dynamic programming ,greedy algorithms etc
Interview Preparation Tips
I applied via LinkedIn and was interviewed in Sep 2021. There was 1 interview round.
Interview Questionnaire
1 Question
- Q1. Java related
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