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thread.join() is used to wait for a thread to finish its execution before moving on to the next steps.
thread.join() blocks the current thread until the thread it is called on completes its execution.
It is commonly used in multi-threaded applications to ensure that all threads have finished before proceeding.
Without thread.join(), the main thread may continue executing while other threads are still running.
Example:...
Fail safe focuses on ensuring system stability and preventing catastrophic failures, while fail fast prioritizes quick detection and response to errors.
Fail safe is about designing systems to minimize the impact of failures and ensure stability.
Fail fast is about quickly detecting and responding to errors to prevent further issues.
Fail safe often involves redundancy and error checking mechanisms to prevent catastr...
Deploying service in production server involves building the application, configuring the server, and monitoring performance.
Build the application code into a deployable package (e.g. JAR file for Java applications)
Configure the production server with necessary dependencies and environment variables
Deploy the application package to the server using tools like Docker, Kubernetes, or manual deployment scripts
Monitor...
Sync call blocks the execution until the response is received, while asynchronous call allows the program to continue executing without waiting for the response.
Sync call blocks the program execution until the response is received
Asynchronous call allows the program to continue executing without waiting for the response
Sync calls are easier to understand and debug, but can lead to performance issues if used excess...
Spring Boot dependency injection is a design pattern where objects are passed their dependencies rather than creating them internally.
In Spring Boot, dependency injection is achieved through the use of @Autowired annotation.
It helps in achieving loose coupling between classes and promotes easier testing and maintenance.
Example: @Autowired private UserService userService; // Injecting UserService dependency
Collection framework is a unified architecture for representing and manipulating collections of objects in Java.
It provides interfaces (like List, Set, Map) and classes (like ArrayList, HashSet, HashMap) to store and manipulate groups of objects.
It allows for easy manipulation, sorting, searching, and iteration of collections.
Collections in the framework can store objects of any type, including user-defined classe...
Jenkins is a continuous integration tool used for automating software development processes, while Kubernetes is a container orchestration platform for managing containerized applications.
Jenkins is used for automating the building, testing, and deployment of software projects.
Kubernetes helps in automating the deployment, scaling, and management of containerized applications.
Jenkins can be integrated with Kuberne...
I applied via Naukri.com and was interviewed in Apr 2024. There was 1 interview round.
Collection framework is a unified architecture for representing and manipulating collections of objects in Java.
It provides interfaces (like List, Set, Map) and classes (like ArrayList, HashSet, HashMap) to store and manipulate groups of objects.
It allows for easy manipulation, sorting, searching, and iteration of collections.
Collections in the framework can store objects of any type, including user-defined classes.
Exa...
Spring Boot dependency injection is a design pattern where objects are passed their dependencies rather than creating them internally.
In Spring Boot, dependency injection is achieved through the use of @Autowired annotation.
It helps in achieving loose coupling between classes and promotes easier testing and maintenance.
Example: @Autowired private UserService userService; // Injecting UserService dependency
Rate limiter is used to control the rate of incoming requests to a server or API.
Prevents server overload by limiting the number of requests a client can make in a specific time period
Helps protect against DDoS attacks by limiting the rate of incoming requests
Ensures fair usage of resources by preventing one client from monopolizing server resources
Can be implemented using algorithms like token bucket or leaky bucket
Ex...
A thread is a lightweight sub-process that allows concurrent execution within a process. Threads can be created in multiple ways.
Threads can be created by extending the Thread class in Java.
Threads can be created by implementing the Runnable interface in Java.
Threads can be created using thread pools in Java.
Threads can be created using asynchronous functions in JavaScript.
thread.join() is used to wait for a thread to finish its execution before moving on to the next steps.
thread.join() blocks the current thread until the thread it is called on completes its execution.
It is commonly used in multi-threaded applications to ensure that all threads have finished before proceeding.
Without thread.join(), the main thread may continue executing while other threads are still running.
Example: thre...
Sync call blocks the execution until the response is received, while asynchronous call allows the program to continue executing without waiting for the response.
Sync call blocks the program execution until the response is received
Asynchronous call allows the program to continue executing without waiting for the response
Sync calls are easier to understand and debug, but can lead to performance issues if used excessively
...
Deploying service in production server involves building the application, configuring the server, and monitoring performance.
Build the application code into a deployable package (e.g. JAR file for Java applications)
Configure the production server with necessary dependencies and environment variables
Deploy the application package to the server using tools like Docker, Kubernetes, or manual deployment scripts
Monitor the ...
Jenkins is a continuous integration tool used for automating software development processes, while Kubernetes is a container orchestration platform for managing containerized applications.
Jenkins is used for automating the building, testing, and deployment of software projects.
Kubernetes helps in automating the deployment, scaling, and management of containerized applications.
Jenkins can be integrated with Kubernetes t...
Fail safe focuses on ensuring system stability and preventing catastrophic failures, while fail fast prioritizes quick detection and response to errors.
Fail safe is about designing systems to minimize the impact of failures and ensure stability.
Fail fast is about quickly detecting and responding to errors to prevent further issues.
Fail safe often involves redundancy and error checking mechanisms to prevent catastrophic...
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I applied via Company Website and was interviewed before Jan 2021. There were 3 interview rounds.
Routing through a proxy involves configuring the proxy server to forward requests to the destination server.
Configure the proxy server to listen for incoming requests
Configure the proxy server to forward requests to the destination server
Configure the client to use the proxy server for outgoing requests
Use a proxy server to bypass network restrictions or improve performance
Examples: Nginx, Apache, Squid
Race condition is a situation where multiple threads/processes access and manipulate shared data simultaneously.
It can be eliminated by using synchronization techniques like locks, semaphores, and mutexes.
Another way is to use atomic operations that ensure the data is accessed and modified atomically.
Using thread-safe data structures can also prevent race conditions.
Example: Two threads trying to increment a shared var...
JCube is a Java library for creating and manipulating Rubik's Cube puzzles.
JCube provides classes for representing Rubik's Cube puzzles and algorithms for solving them.
It supports various cube sizes and can generate random scrambles.
JCube can be used in Java applications or as a standalone command-line tool.
It is open source and available on GitHub.
Regression testing is the process of testing changes made to a software application to ensure that existing functionality still works.
It is performed after making changes to the software
It ensures that existing functionality is not affected by the changes
It helps to catch any defects or bugs that may have been introduced
It can be automated using testing tools
Examples include retesting after bug fixes, testing after new...
Software engineering principles are the best practices and guidelines for developing high-quality software.
Software should be designed with modularity and scalability in mind.
Code should be well-documented and easy to read.
Testing and debugging should be an integral part of the development process.
Version control should be used to manage code changes.
Security and privacy should be considered throughout the development ...
A Singleton class is a class that can only have one instance at a time.
It restricts the instantiation of a class to a single object.
It provides a global point of access to that instance.
It is often used in situations where a single object is required to coordinate actions across a system.
Example: Database connection manager, Configuration manager, Logger manager.
Testing principles ensure software quality, while design principles guide software development.
Testing principles include unit testing, integration testing, and acceptance testing.
Design principles include SOLID, DRY, and KISS.
Testing principles ensure that software meets requirements and is free of defects.
Design principles guide software development to be modular, maintainable, and scalable.
I have the necessary skills, experience, and passion to contribute to VISA's success.
I have a strong background in software development and have worked on projects similar to those at VISA.
I am a quick learner and can adapt to new technologies and programming languages easily.
I am passionate about creating high-quality software that meets the needs of users and exceeds their expectations.
I am a team player and can work...
A profile that challenges me to learn and grow while allowing me to contribute to a team.
A position that encourages continuous learning and development
A role that allows me to collaborate with a team and contribute to projects
A company culture that aligns with my values and work ethic
I am interested in exploring new opportunities and challenges that this company can offer.
I am impressed with the company's reputation and growth potential.
I am excited about the projects and technologies this company is working on.
I believe this company can provide me with a better work-life balance and career growth opportunities.
I am looking for a company culture that aligns with my values and goals.
I am open to exp...
Design an MVC controller system to route URLs to the appropriate controllers based on the URL structure.
Define a routing mechanism that maps URLs to controller actions.
Use a hierarchical structure where each segment of the URL corresponds to a controller.
Example: For 'xyz.com/a/b/c', 'a' routes to 'AController', 'b' to 'BController', and 'c' to 'CController'.
Implement a method to parse the URL and invoke the correspond...
Autocomplete in IDEs helps developers write code faster by suggesting code snippets and completing code as they type.
Autocomplete should suggest code snippets based on the context of the code being written
Autocomplete should prioritize suggestions based on frequency of use
Autocomplete should also suggest variable and function names
Autocomplete should be customizable to allow for user-defined snippets and suggestions
Exa...
My weakness is public speaking.
I tend to get nervous when speaking in front of large groups.
I am working on improving my public speaking skills by practicing and seeking feedback.
I have taken courses and attended workshops to help me overcome my fear of public speaking.
Comparing 2 basketball game scenarios with different number of trials and baskets required to win
Calculate the probability of winning in each game scenario using binomial distribution formula
Compare the probabilities to determine which game scenario is preferable
In game1, the probability of winning is p. In game2, the probability of winning is the sum of probabilities of making 2 or 3 baskets
If p is high, game1 is pref...
I want to join Visa to contribute to innovative payment solutions and be part of a global leader in financial technology.
Visa is at the forefront of digital payment innovation, allowing me to work on cutting-edge technologies.
The company's commitment to security aligns with my passion for developing secure software solutions.
Visa's global presence offers opportunities to collaborate with diverse teams and learn from di...
I'm a passionate software engineer with a strong background in full-stack development and a love for problem-solving.
Graduated with a degree in Computer Science from XYZ University.
Worked at ABC Corp, where I developed a web application that improved user engagement by 30%.
Proficient in languages like JavaScript, Python, and Java, with experience in frameworks like React and Django.
Enjoy collaborating in agile teams an...
I applied via Campus Placement and was interviewed in Dec 2016. There were 5 interview rounds.
Implement Binary Search Tree using given array of strings.
Sort the array in ascending order
Find the middle element and make it the root of the tree
Recursively create left and right subtrees using the left and right halves of the array
Repeat until all elements are added to the tree
Print the given Binary search tree in ascending order
Traverse the left subtree recursively
Print the root node
Traverse the right subtree recursively
Chennai faces problems related to water scarcity, traffic congestion, and pollution.
Water scarcity due to inadequate rainfall and poor management of water resources.
Traffic congestion due to the increasing number of vehicles and poor road infrastructure.
Pollution caused by industries, vehicular emissions, and improper waste disposal.
Need more context on the question to provide an answer.
Please provide more information on the problem to be solved.
Without context, it is difficult to provide a solution.
Can you please provide more details on the problem statement?
Developed a web application using Python and Django framework for managing inventory and sales.
Used Python programming language for backend development
Implemented Django framework for building web application
Designed database schema for inventory and sales data
Integrated frontend using HTML, CSS, and JavaScript
Implemented user authentication and authorization features
I applied via Campus Placement and was interviewed in Sep 2016. There were 4 interview rounds.
I am a passionate software developer with experience in Java, Python, and web development.
Experienced in Java, Python, and web development technologies
Strong problem-solving skills
Team player with excellent communication skills
My resume highlights my experience in software development and showcases my skills in various programming languages and technologies.
Worked on multiple projects using Java, Python, and C++
Developed web applications using HTML, CSS, and JavaScript
Experience with databases such as MySQL and MongoDB
Familiarity with Agile methodology and version control systems like Git
Participated in hackathons and coding competitions
I want to go for VISA to explore new opportunities and gain international experience.
To gain exposure to different cultures and work environments
To expand my skill set and learn new technologies
To work on challenging projects and contribute to the growth of the company
To build a global network of professionals and enhance my career prospects
A binary tree is a data structure in which each node has at most two children.
Start with a root node
Each node has a left and right child
Nodes can be added or removed
Traversal can be done in-order, pre-order, or post-order
Code a basic linked list
Create a Node class with data and next pointer
Create a LinkedList class with head pointer
Implement methods to add, delete, and search nodes in the linked list
A circular linked list is a data structure where the last node points back to the first node, forming a loop.
Create a Node class with data and next pointer
Initialize the head node and set its next pointer to itself
To add a node, create a new node and set its next pointer to the head node's next pointer, then update the head node's next pointer to the new node
To traverse the circular linked list, start from the head nod...
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Software Development Engineer II
94
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| ₹8.6 L/yr - ₹34 L/yr |
Software Developer
44
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| ₹3.5 L/yr - ₹10.9 L/yr |
Sde1
41
salaries
| ₹5 L/yr - ₹17.7 L/yr |
Software Development Engineer
39
salaries
| ₹4.9 L/yr - ₹18.3 L/yr |
Software Engineer
38
salaries
| ₹6.1 L/yr - ₹12 L/yr |
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