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Orage Technologies Java Developer Interview Questions and Answers
Orage Technologies Java Developer Interview Experiences
1 interview found
I applied via Naukri.com and was interviewed in Oct 2024. There was 1 interview round.
(3 Questions)
- Q1. Difference between MVC vs MVVM
- Ans.
MVC focuses on separating the application into Model, View, and Controller components, while MVVM adds a ViewModel layer to handle data and logic.
MVC stands for Model-View-Controller, where the Model represents the data, the View represents the UI, and the Controller handles user input.
MVVM stands for Model-View-ViewModel, where the ViewModel acts as an intermediary between the View and Model, handling data and logic.
I...
- Q2. What is marker interface
- Ans.
Marker interface is an empty interface used to mark a class for special treatment.
Marker interface has no methods or fields, it is used to provide metadata about the class.
Examples of marker interfaces in Java include Serializable, Cloneable, and Remote.
Classes implementing marker interfaces are treated differently by the JVM or frameworks.
- Q3. Difference between Shallow and Deep copy
- Ans.
Shallow copy only copies the references of objects, while deep copy creates new copies of objects.
Shallow copy creates a new object but does not create new copies of nested objects.
Deep copy creates new copies of all nested objects, ensuring complete independence.
Shallow copy is faster and more memory efficient, but changes to nested objects affect both copies.
Deep copy is slower and consumes more memory, but changes t...
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Interview questions from similar companies
(2 Questions)
- Q1. What is the role of a java developer?
- Q2. Develop, test and maintain java application.
I applied via Walk-in and was interviewed in Nov 2024. There were 2 interview rounds.
Questions on string and arrays both are moderate level questions on hacherrank type for 20 marks
(2 Questions)
- Q1. Constructor chaining
- Q2. Hasmap and treemap
Selected
I applied via campus placement at National Institute of Technology (NIT), Warangal and was interviewed in Jul 2022. There were 3 interview rounds.
Their are 30 questions which one has to done in 30 mins
(2 Questions)
- Q1. Q1) About the project you have done
- Q2. Q2) some technical questions related to core Java
Interview Preparation Tips
(2 Questions)
- Q1. What is the difference between abstract class and an interface in Java?
- Ans.
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
Abstract class can have constructors, member variables, and methods, while interface cannot.
A class can implement multiple interfaces but can only extend one abstract class.
Abstract classes are used to define a common behavior among subclasses, while interfaces are used to define a contract for classes to impl...
- Q2. An abstract class can have method implements and abstract method, while an interface only contains abstract method (before Java 8) . Abstract classes support single inheritance, whereas interfaces support ...
- Ans.
Abstract classes can have both implemented and abstract methods, while interfaces can only have abstract methods. Abstract classes support single inheritance, interfaces support multiple inheritance.
Abstract classes can have both implemented and abstract methods, providing more flexibility in design.
Interfaces can only have abstract methods, promoting a more strict contract for implementing classes.
Abstract classes sup...
Java Developer Interview Questions & Answers
Thinkitive Technologies
Rupali Gaikar
posted on 8 Aug 2024
I applied via Naukri.com and was interviewed in Jul 2024. There was 1 interview round.
(1 Question)
- Q1. Oops Concepts ,Absrtraction,Polymorphism
(2 Questions)
- Q1. What is the D/W Hashmap and ConcurrentHashmap in Java?
- Q2. HashMap is not thread-safe, while concurrentHashMap is thread-safe.
I applied via LinkedIn and was interviewed in Apr 2024. There were 2 interview rounds.
Q.1 Pattern
1
*2*
**3**
Q. 2
write code to get sub array with max sum from given array.
(1 Question)
- Q1. Introduction Project Deatails Oops Concept Collection Exception Handling Abstract Class Functional Interface Spring Framework
Interview Preparation Tips
- Java
- Advanced Java
- SQL
- Data Structures
(2 Questions)
- Q1. What is the difference between HashMap and ConcurrentHashMap?
- Q2. HashMap is not thread-safe, but ConcurrentHashmap is thread-safe and allows concurrent access.
Java Developer Interview Questions & Answers
Thinkitive Technologies
Anonymous
posted on 14 Apr 2024
Basic aptitude round
(2 Questions)
- Q1. 1.Java, OOPs concept 2. HTML,CSS,JS 3.DSA
- Q2. Explain your project
(1 Question)
- Q1. Java Coding questions
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