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I applied via Company Website and was interviewed in Jun 2021. There were 3 interview rounds.
Aspect Oriented Programming (AOP) is a programming paradigm that aims to increase modularity by separating cross-cutting concerns.
AOP allows developers to modularize cross-cutting concerns, such as logging, security, and transaction management.
It achieves this by introducing aspects, which are modules that encapsulate cross-cutting concerns.
Aspects can be applied to multiple classes and methods, reducing code duplicati...
JAVA 8 features include lambda expressions, functional interfaces, streams, default methods, and more.
Lambda expressions for functional programming
Functional interfaces for easy implementation of lambda expressions
Streams for efficient processing of large data sets
Default methods for backward compatibility
Date and time API improvements
Nashorn JavaScript engine
Parallel array sorting and processing
Type annotations for im
Dependency Injection is a design pattern used in Spring to inject dependencies into an object.
Dependency Injection is a way to remove hard-coded dependencies between objects.
It allows for loose coupling between objects.
Spring uses Dependency Injection to manage object dependencies.
There are three types of Dependency Injection in Spring: Constructor Injection, Setter Injection, and Field Injection.
Example: @Autowired an...
I have worked with Java 8 and Spring Boot 2.4.2.
I have experience in developing RESTful APIs using Spring Boot 2.4.2.
I have worked with Spring Data JPA for database operations.
I have used Spring Security for authentication and authorization.
I have also worked with Java 8 features such as streams and lambdas.
Singleton, Abstract and Spring MVC are important concepts in software engineering.
Singleton class is a class that can only have one instance at a time.
Abstract class is a class that cannot be instantiated and is used as a base class for other classes.
Spring MVC is a framework for building web applications in Java.
Spring MVC follows the Model-View-Controller architecture pattern.
Singleton and Abstract classes are used f...
I applied via Campus Placement and was interviewed before Jul 2021. There were 2 interview rounds.
Promotion refers to the advancement of an employee to a higher position or rank within an organization.
Promotion can be vertical, where an employee is promoted to a higher position within the same department or team.
Promotion can also be horizontal, where an employee is promoted to a different department or team with similar or different responsibilities.
Promotion can be temporary or permanent, depending on the organiz...
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posted on 6 Nov 2015
posted on 9 May 2017
I was interviewed before May 2016.
I applied via Naukri.com and was interviewed in Mar 2021. There was 1 interview round.
Program to print the Fibonacci series up to a given number.
Take input from user for the limit of the series.
Initialize two variables with 0 and 1 respectively.
Use a loop to generate the series and print each number.
Add the previous two numbers to get the next number in the series.
posted on 24 Apr 2024
I applied via Campus Placement and was interviewed in Oct 2023. There were 3 interview rounds.
It was online 60min test.
It was offline 30 min test.
posted on 24 Apr 2024
I applied via Referral and was interviewed before Apr 2023. There were 3 interview rounds.
Basic java questions along with aptitude questions.
posted on 26 Apr 2024
I applied via Campus Placement and was interviewed before Apr 2023. There was 1 interview round.
The 4 principles of OOP are Inheritance, Encapsulation, Abstraction, and Polymorphism.
Inheritance allows a class to inherit properties and behavior from another class.
Encapsulation restricts access to certain components within a class, protecting the data.
Abstraction hides complex implementation details and only shows the necessary features.
Polymorphism allows objects to be treated as instances of their parent class.
String buffer is synchronized and thread-safe, while string builder is not synchronized and faster.
String buffer is synchronized, making it thread-safe for use in multi-threaded environments.
String builder is not synchronized, providing better performance in single-threaded applications.
String builder is faster than string buffer due to lack of synchronization overhead.
Example: StringBuffer sb = new StringBuffer(); Str
Strings are immutable in order to ensure data integrity and security.
Immutable strings prevent accidental data modification, ensuring data integrity.
Immutable strings enhance security by preventing unauthorized access or tampering.
Immutable strings allow for more efficient memory management and optimization.
Example: 'Hello' cannot be changed to 'Hella' directly, a new string must be created.
There are two types of exceptions in Java: checked exceptions and unchecked exceptions.
Checked exceptions are checked at compile time and must be handled using try-catch or throws keyword.
Unchecked exceptions are not checked at compile time and include RuntimeException and its subclasses.
Examples of checked exceptions include IOException, SQLException, and ClassNotFoundException.
Examples of unchecked exceptions include...
Linear search is a simple searching algorithm that sequentially checks each element in a list until a match is found.
Iterate through each element in the list
Compare the current element with the target value
Return the index if a match is found, otherwise return -1
JDK includes JRE and development tools, while JRE includes only the Java Runtime Environment.
JDK stands for Java Development Kit, which includes JRE and development tools like compilers and debuggers.
JRE stands for Java Runtime Environment, which includes JVM and libraries necessary to run Java applications.
JVM stands for Java Virtual Machine, which is responsible for executing Java bytecode.
JDK is used for developing ...
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