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I appeared for an interview in Aug 2024.
Asked simple Questions like
Giving string and remove special characters
Checked exceptions are checked at compile time, while unchecked exceptions are not.
Checked exceptions must be handled by the code or declared in the method signature using 'throws' keyword.
Unchecked exceptions do not need to be caught or declared in the method signature.
Examples of checked exceptions: IOException, SQLException.
Examples of unchecked exceptions: NullPointerException, ArrayIndexOutOfBoundsException.
Interface in Java is a blueprint of a class that defines a set of methods without implementation.
Interfaces can have abstract methods and constants, but no instance variables.
Classes can implement multiple interfaces but can only extend one class.
Interfaces are used to achieve abstraction and multiple inheritance in Java.
Using multiple catch blocks allows handling different types of exceptions separately, while finally block ensures cleanup code is executed regardless of exception.
Multiple catch blocks can handle different types of exceptions separately
Finally block ensures cleanup code is executed regardless of exception
Example: try { // code that may throw exceptions } catch (ExceptionType1 e) { // handle ExceptionType1 } catch (Exce...
Different types of exceptions include checked, unchecked, and errors.
Checked exceptions are checked at compile time and must be handled or declared.
Unchecked exceptions are not checked at compile time and can be handled or not.
Errors are exceptional conditions that are not meant to be caught or handled.
Example of a login scenario in Cucumber with parameters for username and password
Create a feature file with the login scenario
Define the scenario outline with placeholders for username and password
Implement step definitions to pass the parameters in the login steps
Use regular expressions to remove special characters from a string.
Create a regular expression pattern to match special characters
Use the replace() method with the regular expression pattern to remove special characters
Example: str.replace(/[!@#$%^&*()_+]/g, '') will remove !@#$%^&*()_+ from the string
Docker is a containerization platform, API status codes indicate the success or failure of a request, deployment processes involve releasing software updates, and Jenkins is a continuous integration tool.
Docker is a platform for developing, shipping, and running applications in containers.
API status codes are used to indicate the success or failure of a request, such as 200 for success and 404 for not found.
Deployment ...
I applied via Instahyre and was interviewed in May 2024. There were 2 interview rounds.
String , array questions
Basic aptitude questions and given a scenario how many test cases you can make.
I applied via Referral and was interviewed before Jan 2021. There was 1 interview round.
I applied via Campus Placement and was interviewed before Feb 2021. There were 3 interview rounds.
Aptitude round consists Logical reasoning, General Aptitude, Grammar related questions etc. All are moderate level questions.
OOPs is a programming paradigm that uses objects to represent real-world entities. Java is an OOPs language.
OOPs stands for Object-Oriented Programming System
Java is a class-based OOPs language
Encapsulation, Inheritance, Polymorphism, and Abstraction are the four pillars of OOPs
Objects have state and behavior
Java supports interfaces, which allow for multiple inheritance
Example: A car can be represented as an object wit...
Java solves machine dependency by using bytecode and virtual machine.
Java code is compiled into bytecode which is platform-independent
The bytecode is executed by the Java Virtual Machine (JVM) which is platform-specific
JVM translates bytecode into machine code for the specific platform
This allows Java code to run on any platform with a JVM installed
Example: A Java program compiled on Windows can run on Linux or Mac as
I applied via Campus Placement and was interviewed before May 2021. There were 2 interview rounds.
Numerical ability and logical reasoning followed by some coding mcqs
Printing 1 to 100 without for loop
Use recursion to print numbers from 1 to 99
Print 100 outside the recursion
Use a base case to stop recursion at 100
I applied via Campus Placement and was interviewed before Jun 2021. There were 2 interview rounds.
Simple aptitude test
I applied via Recruitment Consultant and was interviewed before Jul 2020. There was 1 interview round.
I appeared for an interview before Sep 2020.
Round duration - 60 minutes
Round difficulty - Easy
Round duration - 50 minutes
Round difficulty - Easy
Round duration - 60 minutes
Round difficulty - Easy
At the beginning of this round, the interviewer asked me about the data structures I knew. Linked lists, trees, graphs, arrays etc. was my answer. He asked me how well I knew Dynamic Programming. I said I wasn’t strong in that and he said that he would ask me a question on dynamic programming for sure.
Round duration - 40 minutes
Round difficulty - Easy
The interviewer asked me if I was comfortable with the interview process so far and how the previous interviews were. I said it was good and he gave me the first problem to solve.
Round duration - 60 minutes
Round difficulty - Easy
The interviewer asked me some Computer Science fundamentals in this round as well as some behavioural questions.
Implement a Trie data structure with insert and search functions.
Create a TrieNode class with children and isEndOfWord attributes.
Implement insert function to add words by iterating through characters.
Implement search function to check if a word exists by traversing the Trie.
Example: Insert 'apple', 'banana', 'orange' and search for 'apple' and 'grape'.
Do lot of hard work and practice of Data Structures and Algorithms based questions. I personally recommend you Coding Ninjas and Geeks For Geeks for interview preparation.
Application resume tips for other job seekersMake your resume short and try to make it of one page only and do mention all your skills which you are confident of in your resume.
Final outcome of the interviewSelectedI applied via Campus Placement and was interviewed before Aug 2021. There were 2 interview rounds.
It was a basic aptitude test.
I applied via Naukri.com
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