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I applied via Referral and was interviewed in Nov 2024. There were 3 interview rounds.
Simple logical based
Palindrome
Reverse a string
The four pillars of Object-Oriented Programming (OOP) are Abstraction, Encapsulation, Inheritance, and Polymorphism.
Abstraction: Hides complex implementation details and only shows the necessary features to the outside world.
Encapsulation: Bundles data and methods that operate on the data into a single unit, preventing direct access to data from outside the class.
Inheritance: Allows a new class to inherit properties an...
I applied via Campus Placement and was interviewed in Aug 2024. There were 3 interview rounds.
Easy to normal level
Array and string questions
There were 100 Questions from the topics logical reasoning, core subjects and technology concepts.
There were 3 coding questions was of easy-medium leetcode questions from Arrays.
I applied via LinkedIn and was interviewed in Jun 2024. There were 2 interview rounds.
It was quite good, as it involved basic quantitative aptitude questions.
The interview was quite good, involving basic Java questions related to graphs and trees.
TO THE NEW interview questions for designations
Convert a given number to its byte code and count the Number of 1's in the Byte code and sisplay the result.
I applied via Campus Placement and was interviewed in Jul 2022. There were 4 interview rounds.
There was a quant, logical reasoning and english questions around 35.
After clearing apti round you should be able to get coding round details. Coding round consist 3 questions.
I applied via Campus Placement and was interviewed before Mar 2021. There were 3 interview rounds.
Aptitude test consist of English , Maths and basic of IT
3 codes to complete, level was moderate to high
I applied via Naukri.com and was interviewed in Mar 2023. There were 2 interview rounds.
Microservices communicate with each other through APIs and messaging protocols.
Microservices use APIs to communicate with each other.
Messaging protocols like HTTP, AMQP, and MQTT are used for asynchronous communication.
Service discovery mechanisms like Eureka and Consul are used to locate services.
API gateways like Zuul and Kong are used to manage API traffic.
Event-driven architecture is used for real-time communicatio
Securing APIs involves implementing authentication, authorization, encryption, and input validation.
Implement authentication mechanisms like OAuth, JWT, or API keys
Use authorization to control access to APIs based on user roles and permissions
Encrypt sensitive data transmitted over the network using HTTPS
Validate and sanitize input to prevent common security vulnerabilities like SQL injection or cross-site scripting (X
ORM (Object-Relational Mapping) tool is a software framework that maps objects to relational databases.
ORM tool simplifies database operations by allowing developers to interact with databases using object-oriented programming.
It eliminates the need for writing complex SQL queries by providing a higher-level abstraction.
ORM tools handle tasks like data persistence, retrieval, and mapping between objects and database ta...
Hibernate simplifies database programming in Java applications.
Hibernate provides a simple and efficient way to interact with databases.
It eliminates the need for writing complex SQL queries.
It supports object-oriented programming and mapping of Java classes to database tables.
It provides caching and lazy loading mechanisms for improved performance.
It supports transaction management and reduces the risk of data corrupt...
Rest controller is used for RESTful web services while Controller is used for traditional web applications.
Rest controller maps HTTP requests to RESTful web services while Controller maps HTTP requests to traditional web applications.
Rest controller uses @RestController annotation while Controller uses @Controller annotation.
Rest controller returns data in JSON or XML format while Controller returns data in HTML format...
Using component instead of service may cause confusion and errors in the code.
Components and services are two different concepts in Java development.
Components are used for UI elements while services are used for business logic.
Using component instead of service may lead to errors in the code and confusion for other developers.
For example, if a component is used instead of a service for business logic, it may not have ...
The @Autowired annotation is used to automatically wire beans by matching the data type of the bean with the data type of the property.
Used to inject dependencies automatically
Reduces the need for manual bean configuration
Can be used with constructors, fields, and methods
Can be used with @Qualifier to specify which bean to wire
Eureka server is a service registry that enables microservices to discover and communicate with each other.
Eureka server is a component of Netflix's OSS suite.
It allows services to register themselves and discover other services.
It uses a REST API for communication.
Default port is 8761.
Circuit breaker is a design pattern used to prevent cascading failures in distributed systems. Hystrix is a popular implementation.
Circuit breaker monitors the availability of a service and trips if the service fails repeatedly.
It helps to prevent cascading failures by failing fast and providing fallback options.
Hystrix is a popular implementation of circuit breaker pattern in Java.
It provides features like request cac
Ternary operators are conditional operators that evaluate a boolean expression and return one of two values based on the result.
Ternary operators are written in the form of 'condition ? value1 : value2'
If the condition is true, the operator returns value1, otherwise it returns value2
Ternary operators can be used as a shorthand for if-else statements
Example: int x = (a > b) ? a : b; // assigns the larger value of a and
Entity class represents a table in a database and its attributes as fields.
Define class with @Entity annotation
Add @Id annotation to primary key field
Add @Column annotation to map fields to table columns
Implement getters and setters
Override equals() and hashCode() methods
CRUD is a basic operation for data manipulation while JPA is a Java specification for ORM.
CRUD stands for Create, Read, Update, and Delete which are basic operations for data manipulation.
JPA is a Java specification for Object-Relational Mapping (ORM) which provides a way to map Java objects to relational database tables.
JPA provides a higher level of abstraction and simplifies the data access layer by providing an API...
I applied via Company Website and was interviewed in Jan 2024. There was 1 interview round.
Functional interface is an interface with only one abstract method, used for lambda expressions.
Functional interfaces can have multiple default or static methods, but only one abstract method.
They are used for lambda expressions and method references in Java.
Examples of functional interfaces in Java include Runnable, Callable, and Comparator.
I am good coder in java coding knowledge.
based on 7 interviews
3 Interview rounds
based on 2 reviews
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