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Girmiti Software Junior Java Developer Interview Questions and Answers
Girmiti Software Junior Java Developer Interview Experiences
1 interview found
Write a program for string reverse
(4 Questions)
- Q1. Difference betweeen string, stringbuffer and string builder
- Ans.
String is immutable, StringBuffer is synchronized and mutable, StringBuilder is not synchronized and mutable.
String is immutable, meaning its value cannot be changed once it is created.
StringBuffer is synchronized, making it thread-safe, but slower than StringBuilder.
StringBuilder is not synchronized, making it faster than StringBuffer but not thread-safe.
- Q2. Question on OOps concept
- Q3. Abstract and interface difference
- Ans.
Abstract classes can have both abstract and non-abstract methods, while interfaces can only have abstract methods.
Abstract classes can have constructors, interfaces cannot.
A class can implement multiple interfaces, but can only extend one abstract class.
Interfaces are used to achieve multiple inheritance in Java.
Abstract classes are used to provide a common base for subclasses to extend.
- Q4. Questions on collections
Skills evaluated in this interview
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Interview questions from similar companies
I applied via Naukri.com and was interviewed in Dec 2024. There was 1 interview round.
(4 Questions)
- Q1. What is runtime polymorphism, and can you provide a code example to illustrate it?
- Ans.
Runtime polymorphism allows a subclass to provide a specific implementation of a method that is already provided by its parent class.
Runtime polymorphism is achieved through method overriding, where a subclass provides its own implementation of a method that is already defined in its superclass.
The method to be overridden must have the same name, return type, and parameters in both the superclass and subclass.
When an o...
- Q2. Streams in java
- Ans.
Streams in Java provide a way to process collections of objects in a functional style.
Streams are sequences of elements that support various operations like filter, map, reduce, etc.
They can be created from collections, arrays, or generate elements dynamically.
Streams can be sequential or parallel, allowing for efficient processing of large datasets.
Example: List<String> names = Arrays.asList("Alice", "Bob", "Cha...
- Q3. How do we create threads in Java, and how do we invoke them?
- Ans.
Threads in Java are created by extending the Thread class or implementing the Runnable interface, and invoked using the start() method.
Threads can be created by extending the Thread class and overriding the run() method.
Threads can also be created by implementing the Runnable interface and passing an instance of the class to a Thread object.
Threads are invoked by calling the start() method on the Thread object.
- Q4. What is a Rest Template and how is it used?
- Ans.
Rest Template is a class in Spring that simplifies making HTTP requests and handling responses.
Rest Template is part of the Spring framework in Java.
It can be used to make HTTP requests to RESTful web services.
It simplifies the process of making HTTP calls and handling responses.
Rest Template can handle GET, POST, PUT, DELETE, etc. requests.
Example: RestTemplate restTemplate = new RestTemplate();
arun kumar
Selected
I applied via Naukri.com and was interviewed in Sep 2024. There were 3 interview rounds.
(2 Questions)
- Q1. Oops concept asked
- Q2. Springboot annotations
(2 Questions)
- Q1. Project details simply
- Q2. Springboot related
(2 Questions)
- Q1. Easy about salary
- Q2. Details about asked
Interview Preparation Tips
I applied via Campus Placement
There was pattern question in any programming language and you have make the pattern dynamic.
Interview Preparation Tips
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
- Ans.
Encapsulation, Inheritance, Polymorphism, Abstraction are the 4 pillars of OOPs
Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: Class in Java
Inheritance: Ability of a class to inherit properties and behavior from another class. Example: Parent and Child classes
Polymorphism: Ability to present the same interface for different data types. Example: Method overloading and overr...
Interview Preparation Tips
- Collections
- Core Java
- OOPS
- SQL
- Data Structures
- Algorithms
Skills evaluated in this interview
I applied via Approached by Company and was interviewed in Mar 2024. There were 2 interview rounds.
Code review to find bugs
(1 Question)
- Q1. State the features of interface Spring boot annotations Microservice communication table index
- Ans.
Interface features include abstraction, multiple inheritance, and contract enforcement.
Abstraction: Interfaces allow for the definition of methods without implementation, providing a blueprint for classes to follow.
Multiple Inheritance: Java interfaces support multiple inheritance, allowing a class to implement multiple interfaces.
Contract Enforcement: Interfaces define a contract that implementing classes must adhere
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Oct 2023. There were 2 interview rounds.
(2 Questions)
- Q1. Basic Java, Oops concept, Spring boot, DSA
- Q2. Mostly common question. Based on java.
Interview Preparation Tips
Java Developer Trainee Interview Questions & Answers
Tudip Technologies
Anonymous
posted on 19 Apr 2024
Quantitative aptitude questions are there in interview
Pattern printing questions are there it is
Interview Preparation Tips
I applied via Job Portal and was interviewed in Jun 2023. There were 3 interview rounds.
(1 Question)
- Q1. SAP related questions
(1 Question)
- Q1. High level Managerial round
(2 Questions)
- Q1. Spring Initializer
- Q2. I you do not use Spring Initializer is it possible to create a Spring boot application?
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