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SOLID principles are five design principles aimed at making software designs more understandable, flexible, and maintainable.
S - Single Responsibility Principle: A class should have one reason to change. Example: A class handling user data should not also handle logging.
O - Open/Closed Principle: Software entities should be open for extension but closed for modification. Example: Use interfaces to add new features...
HTML is the standard markup language for creating web pages, structuring content, and defining elements on the internet.
HTML stands for Hypertext Markup Language.
It uses tags to define elements, e.g., <p> for paragraphs, <h1> for headings.
HTML documents are structured in a tree-like format, with nested elements.
It can include multimedia elements like images (<img>) and videos (<video>).
HTML...
Java 8 introduced significant features like lambda expressions, streams, and the new Date-Time API, enhancing code efficiency and readability.
Lambda Expressions: Enable concise representation of functional interfaces. Example: (x, y) -> x + y.
Streams API: Facilitates functional-style operations on collections. Example: list.stream().filter(x -> x > 10).collect(Collectors.toList()).
Optional Class: Helps av...
Spring Boot profiles allow developers to define different configurations for different environments.
Profiles can be activated via command line: `--spring.profiles.active=dev`.
You can define properties in `application-dev.properties` for the 'dev' profile.
Profiles can be used to separate configurations for development, testing, and production.
Use `@Profile` annotation to conditionally load beans based on the active...
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A concurrent hash map is a thread-safe data structure that allows concurrent access and modification by multiple threads.
Supports high concurrency with minimal locking, improving performance in multi-threaded environments.
Uses a segmented locking mechanism, allowing multiple threads to access different segments simultaneously.
Example in Java: `ConcurrentHashMap<String, Integer> map = new ConcurrentHashMap<...
ACID is a set of properties that guarantee database transactions are processed reliably.
ACID stands for Atomicity, Consistency, Isolation, Durability
Atomicity ensures that all operations in a transaction are completed successfully or none at all
Consistency ensures that the database remains in a valid state before and after the transaction
Isolation ensures that multiple transactions can occur concurrently without a...
Isolation levels in databases determine how transactions interact with each other.
Isolation levels define the degree to which one transaction must be isolated from the effects of other transactions.
Common isolation levels include READ UNCOMMITTED, READ COMMITTED, REPEATABLE READ, and SERIALIZABLE.
Higher isolation levels provide more data consistency but may impact performance.
For example, in READ COMMITTED isolati...
The == operator checks for equality of values, while the equals() method checks for equality of objects.
The == operator compares the values of two objects, while the equals() method compares the objects themselves.
The == operator is used for primitive data types, while the equals() method is used for objects.
Example: int a = 5; int b = 5; a == b will return true, but a.equals(b) will not work as int is a primitive...
A tree data structure is a hierarchical data structure consisting of nodes connected by edges.
Consists of nodes connected by edges
Has a root node at the top
Each node can have zero or more child nodes
Used in organizing data hierarchically, like file systems or organization charts
TCP is connection-oriented, reliable protocol while UDP is connectionless, unreliable protocol.
TCP ensures data delivery by establishing a connection before sending data.
UDP does not establish a connection before sending data, making it faster but less reliable.
TCP uses sequencing and acknowledgment of data packets for reliable delivery.
UDP is used for real-time applications like video streaming or online gaming w...
I appeared for an interview in Jan 2025.
The == operator checks for equality of values, while the equals() method checks for equality of objects.
The == operator compares the values of two objects, while the equals() method compares the objects themselves.
The == operator is used for primitive data types, while the equals() method is used for objects.
Example: int a = 5; int b = 5; a == b will return true, but a.equals(b) will not work as int is a primitive data...
Dependency inversion is a design principle where high-level modules should not depend on low-level modules, but both should depend on abstractions.
High-level modules should not depend on low-level modules, both should depend on abstractions
Abstractions should not depend on details, details should depend on abstractions
Inversion of control containers like Spring Framework in Java implement dependency inversion
ACID is a set of properties that guarantee database transactions are processed reliably.
ACID stands for Atomicity, Consistency, Isolation, Durability
Atomicity ensures that all operations in a transaction are completed successfully or none at all
Consistency ensures that the database remains in a valid state before and after the transaction
Isolation ensures that multiple transactions can occur concurrently without affect...
Isolation levels in databases determine how transactions interact with each other.
Isolation levels define the degree to which one transaction must be isolated from the effects of other transactions.
Common isolation levels include READ UNCOMMITTED, READ COMMITTED, REPEATABLE READ, and SERIALIZABLE.
Higher isolation levels provide more data consistency but may impact performance.
For example, in READ COMMITTED isolation le...
I appeared for an interview in Jan 2025.
It is all concepts for communication skills
This is some role of the coding ,for example: java,html,css,javascript like that coding
This is observed the skills
I applied via Naukri.com and was interviewed in Nov 2024. There was 1 interview round.
I appeared for an interview in Aug 2024.
An aptitude is a measure of your ability learn or perform required task and succeed in a particular environment
A coding test evaluates an individuals ability to write , understand and debug code
A tree data structure is a hierarchical data structure consisting of nodes connected by edges.
Consists of nodes connected by edges
Has a root node at the top
Each node can have zero or more child nodes
Used in organizing data hierarchically, like file systems or organization charts
Use employeeIds to find all employees
Create a function that takes a list of employeeIds and returns a list of employees
Use a database query or API call to retrieve employee information based on employeeIds
Handle cases where employeeIds do not match any employees
I applied via Naukri.com and was interviewed in Nov 2024. There was 1 interview round.
Governor Limit in Salesforce is a limit set by Salesforce to prevent code from consuming excessive resources.
Governor Limits are a set of limits that Salesforce enforces to ensure efficient use of resources.
Examples of Governor Limits include limits on the number of SOQL queries, the number of DML statements, and the amount of CPU time a transaction can consume.
Exceeding Governor Limits can result in exceptions being t...
I applied via Referral and was interviewed in Nov 2024. There was 1 interview round.
To make a class singleton, restrict the instantiation of a class to only one object.
Create a private static instance variable of the class.
Create a private constructor to prevent external instantiation.
Provide a public static method to access the singleton instance.
Ensure thread safety if needed by using synchronized keyword or double-checked locking.
I developed a web-based project management tool for tracking tasks and deadlines.
Used HTML, CSS, and JavaScript for front-end development
Implemented backend functionality using Node.js and MongoDB
Incorporated user authentication and authorization features
Utilized RESTful APIs for communication between front-end and back-end
I faced difficulties in project related to integration with third-party APIs, debugging complex issues, and meeting tight deadlines.
Integration with third-party APIs was challenging due to lack of documentation and unexpected changes in API responses
Debugging complex issues took time and required thorough analysis of code and system logs
Meeting tight deadlines was stressful and required effective time management and pr...
I applied via Walk-in and was interviewed in Oct 2024. There were 4 interview rounds.
All Logical Coding Question
Virtual, Technical Question
I faced difficulties with integrating third-party APIs and debugging complex logic.
Troubleshooting issues with API responses
Handling asynchronous data flow
Resolving compatibility issues with different libraries
Optimizing performance of the application
The duration of Accenture Software Developer interview process can vary, but typically it takes about less than 2 weeks to complete.
based on 275 interview experiences
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