Persistent

-
Technical -1 
New features in Java-8 and explain which u have worked on?

Lambda expression?

Can Functional interface have more than one default and static methods.?
Ans:] A functional interface has only one abstract method but it can have multiple default methods.
@FunctionalInterface annotation is used to ensure an 
interface can not have more than one abstract method. The use of this annotation is optional. 

Write a program to remove duplicate string element from given list using stream API.
By Using Stream API - 
Remove duplicate words from given String - List<"Oracle","Java","Spring","Java","Oracle","Class">
(Expected O/P: "Oracle","Java")

Ans:] Use Distinct() method or Set can be used also

Named query in Hibernate? https://www.javatpoint.com/hibernate-named-query

Scope of beans in spring boot?

Pros and Cons of Monolithic and Microservices architect?

Design pattern used in Microservices architecture?

Design pattern used in java?

Marker Interface, Why its being used in java?

To find Second Highest salary from employee table in Oracle database?



Technical -2 
What is the differences you found from the role of Sr. Developer and Architect profile?

How long do you worked on architecture role? 

What is your approach for new requirement?

There is one worldwide problem currently wrt to Log4J, Can you explain in detail what is the cause and mitigation for resolution, if ur using any such impacted version of log4j?

How can you start working on Angular from scratch, What all thing you can keep in mind during designing front end application?

What is your understanding on Other UI Js framework in market similar to Angular?

What is Virtual DOM in ReactJS?

What all most technical challenges you have faced in your entire career? Explained the problem definition and resolution you have provided?

Performance and tuning of long running query?

Explain CDN and other caching machanisms?

How do you troubleshoot and debug you backend and frontend program? Any specific tools?

What is your understanding on Microservice architecture, When to use and not use scenarios?

Design pattern and SOLID principles?

CSS box model?

One coding question on JavaScript(Using ES6 standard):

Given two json Arrays, tell me states which do not have covid patients.

state =[
   {
      "name":"goa",
      "Population":1000
   },
   {
      "name":"maharashtra",
      "population":100000
   },
   {
      "name":"Kerala",
      "Population":1000
   },
   {
      "name":"Delhi",
      "population":100000
   },
   {
      "name":"Kolkata",
      "Population":1000
   },
   {
      "name":"UP",
      "population":100000
   },
   {
      "name":"Sikkim",
      "Population":1000
   },
   {
      "name":"Ladakh",
      "population":100000
   }
]



Covid_count=
[
   {
      "name":"Kolkata",
      "patients":20
   },
   {
      "name":"UP",
      "patients":100
   },
   {
      "name":"Sikkim",
      "patients":10
   },
   {
      "name":"Ladakh",
      "patients":10
   }
]

Solution(Answer):
const result = state.filter(f => !Covid_count.some(d => 
d.name == f.name));

console.log(result);


Technical -3
As a program manager or Technical architect, What all factor you will consider when design application from scratch?

What all technology stack you have worked?

Any technical challenges you faced and how did u resolved the same?

What is your understanding on Microservices?

Explain in detail about Performance improvement in frontend, backend or database side?

What is your aspiration?

Comments

Post a Comment

Popular posts from this blog

Full Stack Java Developer - FAQ

-
PROJECT Explain project architecture & technologies stack used in current project?   Your current project deployment process, If its Microservices then explain its CI/CD process?   How do you scale up and down your application if its support microservice architecture?   If you worked on Jenkins then explain it job/pipeline?   What all approach you will take to track slow running application from end to end, Explain step by step?   How do you deal the difficult customer with adhoc requirement?   How will you handle pressure situation within team?   All achievements in IT career?   Anything you have learned during COVID situation last year? CORE JAVA Static method can be overloaded? Static method can be override...
Read more

DSA Interview Coding Questions

-
1] Arrays 1] Find first and second best score Example Given an array, write a function to get first, second best scores from the array and return it in new array. Array may contain duplicates. Example myArray = { 84 , 85 , 86 , 87 , 85 , 90 , 85 , 83 , 23 , 45 , 84 , 1 , 2 , 0 } firstSecond ( myArray ) // {90, 87} Solution: import java . util . Arrays ; import java . util . Collections ; public class Exercise { public static int [] findTopTwoScores ( int [] array ) { int firstHighest = Integer . MIN_VALUE ; int secondHighest = Integer . MIN_VALUE ;   for ( int score : array ) { if ( score > firstHighest ) { secondHighest = firstHighest ; firstHighest = score ; } else if ( score > secondHighest && score < firstHighest ) { secondHighest = score ; } }   return new int []{ firstHighest , secondHighest }...
Read more

Java Interview Question - New FAQs

-
1. Performance Testing & Setting up benchmarks Performance testing evaluate how a system performs under load & to setup benchmarks below steps to be noted down. Steps are: Define KPIs: Response time, throughput, CPU/memory usage etc. Identify Critical Scenarios: like login, search, submit form Use Tools: Gatling, Apache Bench, JMeter (Use to simulate 1000 concurrent users hitting a Rest API and measure the response time Baseline Measurement: Run tests under normal load to establish a baseline Load Testing: Gradually increase users to find system limits Stress Testing: Push beyond limits to see how the system fails Bench marking: Compare results against industry standards or previous releases 2. ACID properties in database It ensure the reliable transaction Atomicity : All operations in a transaction succeed or none do Consistency : DB remains in a valid state before and after the transaction Isolation : Concurrent transactions don't interfere Durability : Once commited...
Read more