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I applied via Naukri.com and was interviewed in Apr 2024. There were 2 interview rounds.
Builder/Factory Pattern is used to create objects with complex initialization logic.
Builder Pattern separates the construction of a complex object from its representation.
Factory Pattern creates objects without specifying the exact class of object that will be created.
Builder Pattern is often used to create immutable objects with many optional parameters.
Factory Pattern is used when there is a need to create multiple i...
Redux is used in React to manage the application state in a predictable way.
Centralized state management for React applications
Predictable state changes with actions and reducers
Easier debugging and testing of state changes
Facilitates communication between components
Filter a List using Streams in Java
Use the filter() method to apply a predicate to each element in the stream
Use collect() method to convert the stream back to a List
Example: List<String> names = Arrays.asList("Alice", "Bob", "Charlie"); List<String> filteredNames = names.stream().filter(name -> name.startsWith("A")).collect(Collectors.toList());
Creating an Entity Class in Java
Define class with @Entity annotation
Add @Id annotation for primary key
Include fields with appropriate data types
There are three types of autowiring in Spring: byType, byName, and constructor.
byType: Spring looks for a bean of the same type and injects it.
byName: Spring looks for a bean with the same name and injects it.
constructor: Spring looks for a constructor and injects the arguments.
Lazy fetch loads data only when needed, while eager fetch loads all related data upfront.
Lazy fetch is more efficient for performance as it only loads data when required.
Eager fetch can lead to performance issues by loading unnecessary data upfront.
Lazy fetch is the default behavior in JPA, while eager fetch needs to be explicitly specified.
Example: Lazy fetch can be used for loading a list of items in a shopping cart ...
Transaction management in Hibernate ensures ACID properties for database operations.
Hibernate provides built-in transaction management support through Session interface.
Transactions can be managed programmatically using beginTransaction(), commit(), and rollback() methods.
Hibernate also supports declarative transaction management using annotations like @Transactional.
Transactions in Hibernate ensure Atomicity, Consiste...
Attached entities are actively managed by the persistence context, while detached entities are no longer actively managed.
Attached entities are being managed by the persistence context and any changes made to them will be automatically synchronized with the database.
Detached entities are not being managed by the persistence context and changes made to them will not be automatically synchronized with the database.
Entiti...
Creating two beans in Java using Spring framework
Use @Component annotation to define a bean
Specify the bean name using @Component("beanName")
Use @Autowired annotation to inject one bean into another
Sort an Employee HashMap based on keys or values
Use TreeMap to automatically sort by keys
Use Comparator to sort by values
Convert HashMap to List and then sort
Top trending discussions
I appeared for an interview before Dec 2020.
Round duration - 90 Minutes
Round difficulty - Medium
Coding round was conducted in the morning for 1.5 hours from 10:00 am to 11:30 am. Exam was conducted on HACKEREARTH which is a user-friendly platform with various edge test-cases. Since exam was done through online mode due to COVID-19, therefore camera was on for invigilation. A well working camera and microphone were needed for successful completion of exam.
Ninja is provided with a dictionary of words, WORDS
, and a sentence, SENTENCE
, which consists of words separated by spaces. The goal is to minimize the size of ...
The goal is to minimize the size of a sentence by replacing words with prefixes from a given dictionary.
Iterate through each word in the sentence and check if a prefix exists in the dictionary
Replace the word with the smallest prefix found in the dictionary
Repeat the process for all words in the sentence
Tip 1 : Do not totally depend on past interview questions or as such unless and until you have a strong foundation. Just build the foundation first in starting months.
Tip 2 : More focus should be on problem-solving skills. Develop the skills of using applications.(Eg.: Where one should use Hashmap, Arraylist, etc.)
Tip 3 : Try to solve the problem on your own. Just sink yourself into the question so much that you don't need to look for the solution.(Figure out solution in your own way).
Tip 4 : Regarding project, quantity doesn't matter but what matters the most is you should know about the project from start to end. Able to explain the project clearly. Be ready with technical as well as Behavioral questions.
Tip 1 : Get rid of irrelevant topics or headings.(Eg. Stood 1st in Annual Sack Race Competition.)
Tip 3 : Make sure you don't keep anything which create problem at time of Interview.
Tip 4 : Short and crisp Resume with each spelling checked twice.
Tip 5 : Keep updating your resume based on addition of Internship/Projects, etc.
Tip 6 : Keep the file name(Resume saved as pdf or any format) decent too.
posted on 2 Dec 2015
I appeared for an interview in Dec 2016.
posted on 13 Mar 2015
I applied via Campus Placement
ATM transaction involves multiple background processes including authentication, authorization, and communication with bank servers.
Customer inserts card and enters PIN
ATM authenticates the card and PIN
ATM requests authorization from bank server
Bank server verifies account balance and approves or denies transaction
ATM dispenses cash or completes other requested transaction
ATM updates account balance and sends transacti
Cut cake into 8 pieces using knife 3 times only.
First, cut the cake horizontally into two equal halves.
Then, cut the cake vertically into four equal pieces.
Finally, cut the cake horizontally again into eight equal pieces.
Make sure to use the knife efficiently to minimize the number of cuts.
Practice visualization before making the cuts to avoid mistakes.
The one bird was already dead.
The bird was already dead before the shot was fired.
The bird was injured and unable to fly away with the rest of the birds.
The bird was a decoy bird used for hunting purposes.
The bird was a trained bird used for falconry.
Developed a web-based attendance management system and a mobile app for event management.
Created a database schema and implemented CRUD operations using PHP and MySQL.
Designed the user interface using HTML, CSS, and JavaScript.
Integrated Google Maps API for location tracking in the mobile app.
Implemented push notifications using Firebase Cloud Messaging.
Collaborated with a team of four to complete the projects within t
I applied via Campus Placement
I applied via Naukri.com and was interviewed in May 2020. There were 5 interview rounds.
I appeared for an interview in Feb 2021.
Round duration - 90 minutes
Round difficulty - Medium
It was an online test round of 90 minutes orgainsed in Hackerearth platform. It consists of 15 mcq questions and 2 coding questions. The level was moderate. Timing of test was in morning and platform was quite good.
Preeti plans to shop for her father's birthday at a store with unlimited quantities of N different items. She has a budget that allows her to buy a maximum of K items. Hel...
Calculate the number of ways Preeti can purchase items within budget, with at least one item quantity differing.
Use dynamic programming to calculate the number of ways to purchase items within budget.
Consider different scenarios where Preeti buys different quantities of each item.
Return the result modulo 10^9 + 7 to handle large answers.
Round duration - 50 minutes
Round difficulty - Medium
Tip 1 : Try to understand basic concepts of all data structures and do coding questions from online sites like Hackerrank, Leetcode etc.
Tip 2 : Prepare basics of DBMS and Operating System. OOPs concept is must .
Tip 3 : Go through all the basics sql queries or must know about any 1 database perfectly.
Tip 1 : Resume should be short and catchy. It should not be more than 1 page.
Tip 2 : Mention atleast 2 projects. Don't put skills you don't know because mostly interviewers will ask questions on resume basis.
based on 1 interview
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