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Coalition Technologies
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Methods are functions within a class that perform specific tasks, while constructors are special methods used to initialize objects.
Methods can be called multiple times, constructors are called only once during object creation
Methods have return types, constructors do not have return types
Constructors have the same name as the class, methods have unique names
JVM is the virtual machine that runs Java bytecode, providing platform independence.
JVM stands for Java Virtual Machine
It is responsible for interpreting Java bytecode and executing it on the underlying hardware
JVM provides features like garbage collection, security, and memory management
JVM has different components like Class Loader, Runtime Data Areas, Execution Engine, and Native Method Interface
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SQL is a standard language for managing relational databases, while PL/SQL is Oracle's proprietary extension for SQL with procedural features.
SQL is a standard language used to manage and manipulate relational databases.
PL/SQL is Oracle's proprietary extension to SQL that adds procedural programming capabilities.
SQL is used for querying and updating data, while PL/SQL is used for writing stored procedures, functions, a...
A trigger is a special kind of stored procedure that is automatically executed when certain events occur in a database.
Triggers can be used to enforce business rules, perform data validation, or automate tasks.
Examples of trigger events include INSERT, UPDATE, and DELETE operations on a table.
Triggers can be defined to execute before or after the triggering event.
I applied via Naukri.com and was interviewed before Aug 2023. There was 1 interview round.
Approach debugging by understanding the code flow, using debugging tools, isolating the issue, and testing solutions.
Start by understanding the code flow and identifying potential areas where the issue may be occurring.
Use debugging tools like breakpoints, logging, and stack traces to pinpoint the source of the problem.
Isolate the issue by reproducing it consistently and narrowing down the scope of the problem.
Test pot...
Refactored a legacy codebase to improve performance by optimizing database queries.
Identified bottlenecks in the codebase by profiling and analyzing performance metrics.
Rewrote complex and inefficient database queries to improve response times.
Implemented caching mechanisms to reduce redundant database calls.
Refactored code to follow best practices and improve maintainability.
Tested the changes thoroughly to ensure the
By prioritizing tasks, using efficient algorithms, and conducting code reviews.
Prioritize tasks based on impact and complexity to focus on critical components first.
Utilize efficient algorithms and data structures to optimize code performance.
Conduct code reviews with team members to identify potential bottlenecks and suggest improvements.
Example: Prioritize implementing a caching mechanism for frequently accessed data
I would approach the situation by respectfully discussing the pros and cons of both solutions and finding a compromise.
Listen to the senior team member or client's perspective and understand their reasoning
Present your preferred solution along with the reasons why you believe it is the best approach
Engage in a constructive discussion to find common ground or a compromise
Consider the impact of each solution on the proje...
I regularly attend tech conferences, read industry blogs, participate in online courses, and collaborate with colleagues to stay updated.
Attend tech conferences to learn about new technologies and trends
Read industry blogs and articles to stay informed
Participate in online courses and tutorials to expand knowledge
Collaborate with colleagues to share insights and learn from each other
I use package managers, regularly update dependencies, and conduct security audits.
Utilize package managers like npm, pip, or Maven to manage dependencies
Regularly update dependencies to ensure compatibility and security patches
Conduct security audits using tools like OWASP Dependency-Check or Snyk
Consider using dependency locking to ensure consistent builds
I implemented a new feature using React Native and had to learn the framework on the job.
Researched online resources and documentation to understand React Native
Experimented with small projects to practice using React Native
Sought help from colleagues or online communities when facing challenges
Identified and addressed a potential bottleneck in a system before it became a problem.
Monitored system performance regularly to identify any potential bottlenecks
Analyzed system logs and metrics to pinpoint the root cause of the bottleneck
Implemented optimizations such as caching, indexing, or code refactoring to address the bottleneck
Collaborated with team members to implement a long-term solution to prevent similar
I prioritize tasks based on deadlines, impact, and dependencies, and use tools like to-do lists and project management software.
Evaluate deadlines and prioritize tasks that are due soon
Consider the impact of each task on the overall project or team goals
Identify dependencies between tasks and prioritize accordingly
Use tools like to-do lists, project management software, or time-blocking techniques to stay organized
Regu
I use consistent naming conventions, inline comments, and thorough documentation to ensure clean and well-documented code.
Follow consistent naming conventions for variables, functions, and classes to make the code easier to understand.
Include inline comments to explain complex logic or algorithms within the code.
Write thorough documentation for each function, class, and module to provide context and usage instructions ...
Approach integrating new feature into existing system without disruption
Analyze the existing system to understand its architecture and dependencies
Identify the impact of the new feature on the current functionality
Implement the new feature in a separate branch or environment for testing
Conduct thorough testing to ensure the new feature works as expected and does not break existing functionality
Gradually integrate the n...
I applied via Naukri.com and was interviewed before Jun 2023. There were 3 interview rounds.
Was asked a React coding question to fetch data using an API and show it on UI, for a frontend developer role.
I applied via campus placement at Mahatma Education Societys Pillai College of Architecture, Panvel and was interviewed before Mar 2023. There were 2 interview rounds.
Basic DSA question. Searching and Sorting using LL, Array, other basic ds
I applied via Walk-in and was interviewed in Mar 2022. There were 3 interview rounds.
5 coding questions supposed to attempt out of 7 based on Strings and loops
I used the Spring Boot API in my project.
Spring Boot is a popular Java framework for building web applications.
It provides a variety of tools and features for building RESTful APIs.
I used Spring Boot's annotations to define endpoints and handle requests.
I also used Spring Data JPA to interact with a MySQL database.
Some examples of Spring Boot APIs I used include @RestController, @GetMapping, and @PostMapping.
Thread life cycle in Java involves various states a thread goes through during its execution.
Thread is created using new keyword or by extending Thread class
Thread enters the runnable state after start() method is called
Thread can be blocked or waiting for a resource in the blocked or waiting state
Thread can be terminated in the dead state
Thread can be paused or resumed using sleep() and notify() methods
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