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Trie Coder Java Software Engineer Interview Questions, Process, and Tips
Trie Coder Java Software Engineer Interview Experiences
1 interview found
I applied via LinkedIn and was interviewed in Mar 2021. There were 5 interview rounds.
Interview Questionnaire
4 Questions
- Q1. Can we pass values during object creation?
- Ans.
Yes, we can pass values during object creation using constructors.
Constructors are special methods that are called when an object is created.
They can take parameters to initialize the object's state.
Values passed during object creation are used to initialize instance variables.
Example: public class Person { String name; int age; public Person(String name, int age) { this.name = name; this.age = age; } }
Example usage: P
- Q2. Differentiate between Array and Array list in detail with example?
- Ans.
Array is a fixed-size data structure while Array list is a dynamic data structure.
Array has a fixed size while Array list can grow dynamically.
Array can store only homogeneous data types while Array list can store heterogeneous data types.
Array is faster than Array list in terms of accessing elements.
Array list provides more functionality like add, remove, and search.
Example of Array: int[] arr = new int[5]; Example of
- Q3. Explain OOP concepts in Java with real time examples?
- Ans.
OOP concepts in Java with real time examples
Encapsulation - hiding implementation details of a class. Example: private variables in a class
Inheritance - creating a new class from an existing class. Example: subclass extending a superclass
Polymorphism - ability of an object to take many forms. Example: method overloading and overriding
Abstraction - showing only necessary details to the user. Example: abstract classes an
- Q4. What are exceptions. How many times are there?
- Ans.
Exceptions are errors that occur during program execution. There are two types: checked and unchecked.
Exceptions are objects that represent errors or exceptional conditions that occur during program execution.
Checked exceptions are checked at compile time and must be handled or declared in the method signature.
Unchecked exceptions are not checked at compile time and can be handled or left to propagate up the call stack...
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Interview questions from similar companies
Shaikh Aaqib
I applied via Naukri.com and was interviewed in Sep 2024. There were 3 interview rounds.
(2 Questions)
- Q1. Write an API to fetch the id and JSON from the client.
- Ans.
Create an API to fetch id and JSON from the client.
Create a RESTful API endpoint that accepts requests from the client
Use a GET request to fetch the id and JSON data from the client
Implement error handling for invalid requests or missing data
- Q2. Find forth highest salary from List using java 8.
- Ans.
Use Java 8 stream to find the forth highest salary from a List.
Use stream() method to convert the List to a stream.
Use distinct() method to remove duplicates.
Use sorted() method to sort the salaries in ascending order.
Use skip() method to skip the first three highest salaries.
Use findFirst() method to get the forth highest salary.
(2 Questions)
- Q1. Microservice Architecture questions
- Q2. Spring Boot Annotations
(2 Questions)
- Q1. Salary Expectation
- Q2. Basic HR questions
Skills evaluated in this interview
I applied via Company Website and was interviewed in Nov 2024. There were 2 interview rounds.
(1 Question)
- Q1. Project Architecture
(1 Question)
- Q1. Informatica tech questions
I was interviewed in Oct 2024.
(4 Questions)
- Q1. Spring cloud gateway
- Q2. JWT Token structure and details
- Q3. Java 11 features
- Q4. Stream related problems
I applied via Company Website and was interviewed in Aug 2024. There was 1 interview round.
(2 Questions)
- Q1. Functional interface
- Q2. Find if array of numbers, which are prime, using streams
- Ans.
Use streams to find prime numbers in an array
Use Java streams to filter out non-prime numbers from the array
Check if a number is prime by dividing it by all numbers less than its square root
Create a method to check if a number is prime
Interview Preparation Tips
Skills evaluated in this interview
Software Developer Interview Questions & Answers
State Street Corporation
Anonymous
posted on 1 Oct 2024
I applied via Campus Placement
DP graphs strings it was good
(2 Questions)
- Q1. Reverse a linkded list
- Ans.
Reverse a linked list by changing the direction of pointers
Start with three pointers: current, previous, and next
Iterate through the list, updating pointers to reverse the direction
Return the new head of the reversed list
- Q2. Print fibonacci series
- Ans.
The Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones.
Start with two variables initialized to 0 and 1
Loop through desired number of iterations, adding the previous two numbers to get the next number
Print or store each number in the series
Skills evaluated in this interview
(1 Question)
- Q1. Java, lambda expressions, micro services
(1 Question)
- Q1. Microservices architecture, saga pattern
(1 Question)
- Q1. Managerial, how do you improve your skills etc
Interview Preparation Tips
Software Developer Interview Questions & Answers
Motilal Oswal Financial Services
Anonymous
posted on 8 Aug 2024
Selected
I applied via Referral and was interviewed in Jul 2024. There was 1 interview round.
(2 Questions)
- Q1. Dependency injection
- Q2. What are oops concepts
- Ans.
Object-oriented programming concepts that focus on data encapsulation, inheritance, polymorphism, and abstraction.
Encapsulation: bundling data and methods that operate on the data into a single unit (class)
Inheritance: ability of a class to inherit properties and behavior from another class
Polymorphism: ability to present the same interface for different data types
Abstraction: hiding the complex implementation details
(2 Questions)
- Q1. Why do you want to switch
- Ans.
I want to switch to explore new technologies and challenges in a different industry.
Interested in learning new skills and technologies
Seeking new challenges and opportunities for growth
Want to explore different industry perspectives
- Q2. Salry expectations
(2 Questions)
- Q1. Question on oop concepts
- Q2. Coding questions
I applied via Naukri.com and was interviewed in Apr 2024. There was 1 interview round.
(4 Questions)
- Q1. Ask to write code for equal and hashcode in notepad
- Q2. Type of Collections and its internal working
- Ans.
Java collections are data structures that store and manipulate groups of objects.
Types of collections include List, Set, Map, Queue, etc.
Internal workings involve data structures like arrays, linked lists, hash tables, etc.
Collections framework provides interfaces and classes for working with collections.
- Q3. Count number of occurrence of string from Array
- Ans.
Count occurrences of a specific string in an array of strings.
Iterate through the array and use a HashMap to store the count of each string.
Use the string as key and increment the count each time it is encountered.
Return the count of the specific string at the end.
- Q4. Write a code using stream
- Ans.
Using stream to filter a list of strings
Use the filter method to apply a predicate to each element in the stream
Convert the stream back to a list using the collect method
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