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Abstract class is a class that cannot be instantiated and is used as a base class for other classes.
Abstract classes are used to provide a common interface for a group of related classes.
They can have abstract and non-abstract methods.
Abstract classes are useful when you want to provide a default implementation of a method, but allow subclasses to override it.
They are also useful when you want to enforce certain method...
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I applied via Recruitment Consultant and was interviewed before May 2020. There were 3 interview rounds.
JAVA 8 handles collisions using separate chaining and open addressing.
Separate chaining uses linked lists to store multiple values at the same index in the hash table.
Open addressing uses a probing sequence to find the next available slot in the hash table.
JAVA 8 also introduced the ConcurrentHashMap class which uses a combination of both techniques for better performance.
Example: HashMap
Garbage collection is an automatic memory management process in Java.
Garbage collection is the process of freeing up memory by removing objects that are no longer in use.
Java has a built-in garbage collector that runs automatically in the background.
The garbage collector uses different algorithms to determine which objects are no longer in use and can be removed.
Some of the commonly used garbage collection algorithms i...
I applied via LinkedIn and was interviewed in Apr 2021. There was 1 interview round.
I applied via Naukri.com and was interviewed in Feb 2021. There were 5 interview rounds.
I applied via Referral and was interviewed in May 2021. There were 3 interview rounds.
Dynamic form is a form that can be modified at runtime. FormArray is an array of form controls.
Dynamic form allows adding or removing form fields based on user input or other conditions.
FormArray is used to manage an array of form controls.
Example: A form where users can add multiple phone numbers or email addresses.
Example: A form where users can add or remove items from a shopping cart.
To address client complaint of slow application post-deployment, I would follow a systematic approach to identify and resolve the issue while keeping the client informed.
First, I would gather more information from the client about the specific areas of the application that are slow and the frequency of the issue.
Next, I would review the application logs to identify any errors or performance issues.
I would also check th...
SPA stands for Single Page Application. Lazy loading is a technique to load modules on demand.
SPA is a web application that loads a single HTML page and dynamically updates the content as the user interacts with it.
To load another module in SPA, we can use lazy loading technique which loads the module only when it is required.
Lazy loading helps in reducing the initial load time of the application and improves the perfo...
Observable is a pattern for handling asynchronous data streams. Promises are a way to handle asynchronous operations.
Observables allow for subscribing to a stream of data and reacting to each event as it comes in.
Promises represent a value that may not be available yet, but will be resolved at some point in the future.
async/await is a way to write asynchronous code that looks synchronous, by pausing execution until a p...
Yes, script tags can be used in Angular
Script tags can be used to load external scripts in Angular
Angular also provides a way to load scripts dynamically using the ScriptService
However, it is recommended to use Angular's built-in mechanisms for loading scripts
No, it will not get rendered on UI without a template.
A component needs a template to be rendered on UI.
Without a template, the component will not be visible on the UI.
The template defines the structure and content of the component.
If there is no template, the component will not have any visual representation.
I was interviewed before Sep 2020.
Round duration - 140 minutes
Round difficulty - Medium
Test timing was at 2:00 pm , it was conducted in a college and the environment was good for the test. Camera was a primary part of test, so no suspicious activity.
Given two numbers in the form of two arrays where each element of the array represents a digit, calculate the sum of these two numbers and return this sum as an ar...
Given two numbers represented as arrays, calculate their sum and return the result as an array.
Iterate through the arrays from right to left, adding digits and carrying over if necessary
Handle cases where one array is longer than the other by considering the remaining digits
Ensure the final sum array does not have any leading zeros
Round duration - 20 minutes
Round difficulty - Easy
The round was conducted at around 12 p.m. I was called at the college location and then it was conducted. The interviewer was quite polite and frank.
Round duration - 8 minutes
Round difficulty - Easy
This round was conducted right after finishing and clearing the technical round at the same place and on the same day.
Tip 1 : Practice atleast 2-3 Coding problems daily so your logic building becomes stronger.
Tip 2 : Exercise problems based on OOPS concepts and others too.
Tip 3 : If you can have your own project built, then it's the major point and will act as a plus point.
Tip 1 : Your resume should be in standard form, short and simple will be more effective.
Tip 2 : Whatever you have learned, you need to mention it in your resume as that will be your primary source of selection and having project on your resume is important.
I applied via Campus Placement and was interviewed before Feb 2020. There were 4 interview rounds.
I applied via Campus Placement and was interviewed in Dec 2020. There was 1 interview round.
I applied via Campus Placement and was interviewed before Jun 2020. There were 3 interview rounds.
I applied via Job Portal and was interviewed before Jan 2021. There were 3 interview rounds.
Software Engineer
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QA Engineer
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