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Fluentgrid Java Developer Interview Questions and Answers
6 Interview questions
Using Java 8 Streams API to print single occurrences of names in an ArrayList of Strings.
Use stream() method on the ArrayList to create a stream of elements.
Use filter() method to filter out elements that occur more than once.
Use distinct() method to get only unique elements.
Use forEach() method to print each unique element.
Reverse the year of birth and name, then print them in that order.
Reverse the year of birth using StringBuilder.reverse() method
Reverse the name using StringBuilder.reverse() method
Print the reversed year of birth followed by the reversed name
Code to print each name and the number of occurrences in an ArrayList of Strings.
Iterate through the ArrayList and use a HashMap to store the count of each name.
Print each name along with its count from the HashMap.
Lambda expressions in Java are a concise way to represent anonymous functions.
Lambda expressions are used to provide implementation of functional interfaces.
They enable you to treat functionality as a method argument, or code as data.
Syntax: (parameters) -> expression or (parameters) -> { statements; }
Example: (int a, int b) -> a + b
Streams in Java are sequences of elements that support functional-style operations such as filter, map, reduce, etc.
Streams are not data structures, but rather a way to interact with collections of objects.
They allow for efficient processing of large amounts of data.
Streams can be sequential or parallel, allowing for concurrent processing.
Example: List<String> names = Arrays.asList("Alice", "Bob", "Charlie")...
Interfaces and Abstract classes in Java are used for achieving abstraction and defining contracts for classes to implement.
Interfaces in Java are like blueprints for classes, defining methods that must be implemented by classes that implement the interface.
Abstract classes are classes that cannot be instantiated and can have both abstract and concrete methods.
Example of an interface in Java: public interface Shap...
Fluentgrid Java Developer Interview Experiences
1 interview found
Anonymous
Selected
I applied via Approached by Company and was interviewed in Sep 2024. There were 3 interview rounds.
(5 Questions)
- Q1. Introduce yourself
- Q2. Tell me about the project you worked on in your previous company and the role you played as part of the team and your day to day responsibilities as a Java Developer in the project
- Ans.
Developed a web-based inventory management system using Java, Spring, and Hibernate
Designed and implemented database schema using Hibernate
Developed RESTful APIs using Spring framework
Worked on front-end development using HTML, CSS, and JavaScript
Collaborated with team members to troubleshoot and resolve issues
Participated in code reviews and testing
- Q3. What are Interfaces and Abstract classed in Java and code an example of an interface on Notepad
- Ans.
Interfaces and Abstract classes in Java are used for achieving abstraction and defining contracts for classes to implement.
Interfaces in Java are like blueprints for classes, defining methods that must be implemented by classes that implement the interface.
Abstract classes are classes that cannot be instantiated and can have both abstract and concrete methods.
Example of an interface in Java: public interface Shape { ...
- Q4. You are given a string, name and an integer which is year of birth. You need to print the reverse of year of birth followed by the reverse of name.
- Q5. What are Threads in Java
(7 Questions)
- Q1. Explain briefly about your project at your previous company
- Q2. Given a ArrayList of String containing some name with some name repeated. Write the code on a notepad printing only the single occurrence of each name in the ArrayList. iImplement the same using Java 8 Str...
- Q3. Given a ArrayList of String containing some names with some repeated names. Write the code on a notepad printing each name and the number of occurrences of each name in the ArrayList
- Q4. What are lambda expressions in Java
- Q5. What are functional interfaces in Java
- Q6. What are Streams in Java
- Q7. Do you have any questions for me
(4 Questions)
- Q1. Tell me about yourself
- Q2. Few questions related to my education and my placements
- Q3. What was your CTC at your previous company
- Ans.
My previous CTC was confidential as per company policy.
CTC was confidential as per company policy
I am unable to disclose my previous CTC
Previous CTC information is not available
- Q4. Do you have any questions for me
Interview Preparation Tips
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
I appeared for an interview before Mar 2021.
Round duration - 30 minutes
Round difficulty - Medium
This was a MCQ round. 30 ques in 30 mins consisting of difficult quantitative aptitude questions were to be solved.
(2 Questions)
Round duration - 60 minutes
Round difficulty - Medium
In this test round, 2 coding questions were given. Either write the code or pseudo code
- Q1.
N Queens Problem
Given an integer
N, find all possible placements ofNqueens on anN x Nchessboard such that no two queens threaten each other.Explanation:
A queen can attack another queen if they ar...
- Ans.
The N Queens Problem involves finding all possible placements of N queens on an N x N chessboard without threatening each other.
Use backtracking algorithm to explore all possible configurations.
Keep track of rows, columns, and diagonals to ensure queens do not threaten each other.
Generate all valid configurations and print them out.
- Q2.
Sort 0 1 2 Problem Statement
Given an integer array
arrof size 'N' containing only 0s, 1s, and 2s, write an algorithm to sort the array.Input:
The first line contains an integer 'T' representing the n... - Ans.
Sort an array of 0s, 1s, and 2s in linear time complexity.
Use three pointers to keep track of 0s, 1s, and 2s while traversing the array.
Swap elements based on the values encountered to sort the array in-place.
Time complexity should be O(N) and space complexity should be O(1).
(2 Questions)
Round duration - 60 minutes
Round difficulty - Easy
This was a technical round with questions on DSA.
- Q1.
Reverse Words in a String: Problem Statement
You are given a string of length
N. Your task is to reverse the string word by word. The input may contain multiple spaces between words and may have leading o... - Ans.
Reverse words in a string while handling leading, trailing, and multiple spaces.
Split the input string by spaces to get individual words
Reverse the order of the words
Join the reversed words with a single space in between
- Q2.
Circular Linked List Detection
You are provided with the head of a linked list containing integers. Your task is to determine if the linked list is circular.
Note:
- A linked list is considered circula...
- Ans.
Detect if a given linked list is circular by checking if it forms a closed loop.
Traverse the linked list using two pointers, one moving at double the speed of the other.
If the two pointers meet at any point, the linked list is circular.
If the faster pointer reaches the end of the list (NULL), the linked list is not circular.
Round duration - 30 minutes
Round difficulty - Easy
HR round with typical behavioral problems.
Interview Preparation Tips
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Skills evaluated in this interview
Interview Questionnaire
4 Questions
- Q1. Total 3 rounds are there.
- Q2. 1 . Apps and tech..m choose the best
- Q3. 2. Technical. Asking basic questions (oops, multithreading, basic JDBC) and 1 program (array or collection)
- Q4. 3. Basic questions about you. And some technical questions. Its pure for check communication
I applied via Naukri.com and was interviewed before Sep 2020. There were 3 interview rounds.
Interview Questionnaire
3 Questions
- Q1. Basics of Java ,MySQL
- Q2. For java do all object oriented programming (oops) concept very deeply
- Ans.
Java supports OOP concepts like encapsulation, inheritance, polymorphism, and abstraction, enhancing code reusability and maintainability.
Encapsulation: Bundling data and methods. Example: private variables with public getters/setters.
Inheritance: Deriving new classes from existing ones. Example: class Dog extends Animal.
Polymorphism: Ability to take many forms. Example: method overriding and overloading.
Abstraction: H...
- Q3. For mysql do all basics commands and query
- Ans.
Basic MySQL commands include creating databases, tables, inserting data, querying, updating, and deleting records.
CREATE DATABASE db_name; // Creates a new database
USE db_name; // Selects the database to use
CREATE TABLE table_name (column1 datatype, column2 datatype); // Creates a new table
INSERT INTO table_name (column1, column2) VALUES (value1, value2); // Inserts data into a table
SELECT * FROM table_name; // Retriev...
Interview Preparation Tips
I appeared for an interview in Oct 2020.
(1 Question)
Round duration - 90 minutes
Round difficulty - Easy
There were two section Aptitude and Coding.
- Q1.
Buy and Sell Stock Problem Statement
Imagine you are Harshad Mehta's friend, and you have been given the stock prices of a particular company for the next 'N' days. You can perform up to two buy-and-sell ...
- Ans.
The task is to determine the maximum profit that can be achieved by performing up to two buy-and-sell transactions on a given set of stock prices.
Iterate through the array of stock prices and calculate the maximum profit that can be achieved by buying and selling at different points.
Keep track of the maximum profit after the first transaction and the maximum profit overall by considering different combinations of buy a...
(1 Question)
Round duration - 60 minutes
Round difficulty - Easy
This was the first technical interview.
- Q1.
Pair Sum Problem Statement
You are given an integer array 'ARR' of size 'N' and an integer 'S'. Your task is to find and return a list of all pairs of elements where each sum of a pair equals 'S'.
Note:
... - Ans.
Find pairs of elements in an array that sum up to a given value, sorted in a specific order.
Iterate through the array and for each element, check if the complement (S - current element) exists in a hash set.
Keep track of pairs in a hash set to avoid duplicates.
Sort the pairs based on the criteria mentioned in the question.
Return the sorted list of pairs.
Interview Preparation Tips
Tip 1 : Prepare theory subjects well
Tip 2 : Start doing some development and learn a framework from 2nd year
Tip 1: Mention projects with technologies
Tip 2: Make important words in bold
Skills evaluated in this interview
Bharath Kumar
Interview Questionnaire
2 Questions
- Q1. Are you ready to work Mindgate
- Ans.
Yes, I am ready to work at Mindgate.
I have the necessary skills and experience to work at Mindgate.
I am familiar with Java development and have worked on similar projects before.
I am eager to contribute to the team and learn from the talented professionals at Mindgate.
- Q2. Prepare jdbc
Interview Questionnaire
3 Questions
- Q1. 1.What is the purpose of a default constructor?
- Q2. 2.What are the differences between the constructors and methods?
- Q3. 3.Why is the main method static?
Skills evaluated in this interview
Imran Ashraf
Reasoning and Mental ability questions
DSA question . Level was a little hard like dynamic programming , Matrix questions etc
(1 Question)
- Q1. It was normal talk
I applied via Referral and was interviewed in Oct 2023. There was 1 interview round.
(4 Questions)
- Q1. 1 question on merge sort, 1 question on SQL queries, oops concepts in depth with real-life examples, core java concepts in depth, collection framework.
- Q2. Merge 2 sorted arrays,
- Ans.
Merge 2 sorted arrays into a single sorted array.
Create a new array with the combined length of the two input arrays
Use two pointers to iterate through the two arrays and compare elements to merge them into the new array
Handle cases where one array is longer than the other
- Q3. Find the top salary of a department
- Q4. 4 pillars of oops
Interview Preparation Tips
- Collections
- Core Java
- OOPS
- SQL
- Data Structures
- Algorithms
Skills evaluated in this interview
Anurag
I applied via Naukri.com and was interviewed in Sep 2021. There were 3 interview rounds.
Interview Questionnaire
1 Question
- Q1. I was asked questions mostly on microservices, their architecture, how they are deployed in kubernetes, how the resources are allocated etc
Interview Preparation Tips
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