Applied Cloud Computing UI/UX Designer Interview Questions and Answers

Q1. Collections framework, Explain why you chose a particular collection instead of other with example scenario based
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Q2. Explain your project
Ans. 
Developed a web application for online shopping with features like user authentication, product search, and order management.
• Implemented user authentication using Spring Security

• Utilized Hibernate for database operations

• Designed front-end using AngularJS for dynamic user interface
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Q1. Min stack write code with full operation
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A min stack is a stack data structure that supports the usual push and pop operations, along with an additional operation to retrieve the minimum element in constant time.
• Create a stack to store the elements and another stack to store the minimum values encountered so far.

• When pushing an element, check if it is smaller than the current minimum. If so, push it onto the minimum stack.

• When popping an element, check if it ...read more
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Q2. Graph and sql ,concept problem
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Q1. Merge Sort based tricky ques
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Q2. Island problem leetcode
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Round duration - 60 minutes
Round difficulty - Easy

Technical Interview round with questions based on Spring.

Q1. What is Inversion of Control?
Ans. 
Inversion of Control is a design principle where the control flow of a program is inverted, with the framework controlling the flow.
• Inversion of Control allows for decoupling of components, making the code more modular and easier to maintain.

• Common examples of Inversion of Control include dependency injection and event listeners.

• Frameworks like Spring and Hibernate make use of Inversion of Control to manage object life
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Q2. What is dependency injection?
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Dependency injection is a design pattern in which the dependencies of an object are provided externally rather than created within the object itself.
• In dependency injection, the dependencies of an object are injected into it from an external source, typically a framework or container.

• This helps in achieving loose coupling between classes, making the code more modular and easier to maintain.

• There are three common types ...read more
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Q3. What is the difference between constructor injection and setter injection in dependency injection?
Ans. 
Constructor injection passes dependencies through a class constructor, while setter injection uses setter methods.
• Constructor injection is done by passing dependencies as parameters to the constructor.

• Setter injection involves calling setter methods to set the dependencies after the object is created.

• Constructor injection ensures that all required dependencies are provided at the time of object creation.

• Setter injectio...read more
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Q4. Can you explain the prototype scope in Spring?
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Prototype scope in Spring creates a new instance of the bean every time it is requested.
• Prototype scope is used when a new instance of the bean is required for each request.

• It is not thread-safe, as a new instance is created for each request.

• Example: If a bean is defined with prototype scope, a new instance will be created every time it is injected or requested.
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Q5. What are the different types of advice in Spring AOP?
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Types of advice in Spring AOP include before, after, around, after-returning, and after-throwing.
• Before advice: Executed before the method invocation.

• After advice: Executed after the method invocation, regardless of its outcome.

• Around advice: Wraps around the method invocation, allowing for custom behavior before and after.

• After-returning advice: Executed after the method successfully returns a value.

• After-throwing adv...read more
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Round duration - 60 minutes
Round difficulty - Easy

Technical Interview round with questions based on Java and Spring.

Q1. What is the Java Executor Framework?
Ans. 
Java Executor Framework is a framework provided by Java for managing and executing tasks asynchronously.
• It provides a way to manage threads and execute tasks concurrently.

• It includes interfaces like Executor, ExecutorService, and ScheduledExecutorService.

• It allows for better control over thread management and task execution compared to manually managing threads.

• Example: Executors.newFixedThreadPool(5) creates a thread
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Q2. What are the advantages of design patterns in Java?
Ans. 
Design patterns in Java provide reusable solutions to common problems, improving code quality and maintainability.
• Promotes code reusability by providing proven solutions to common design problems

• Improves code maintainability by following established best practices

• Enhances code readability by providing a common language for developers to communicate design ideas

• Helps in creating scalable and flexible software architectu...read more
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Q3. What are the different states of entity instances?
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Entity instances can be in new, managed, detached, or removed states.
• New state: when an entity is first created but not yet associated with a persistence context.

• Managed state: when an entity is being managed by a persistence context and any changes made to it will be tracked.

• Detached state: when an entity was previously managed but is no longer associated with a persistence context.

• Removed state: when an entity is mar
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Q4. How do you implement the Java Executor Framework?
Ans. 
The Java Executor Framework provides a way to manage and execute tasks asynchronously in Java applications.
• Create an instance of ExecutorService using Executors class

• Submit tasks for execution using execute() or submit() methods

• Handle the results of the tasks using Future objects

• Shutdown the ExecutorService when tasks are completed using shutdown() method
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Q5. What are the benefits of the Java Executor Framework?
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The Java Executor Framework provides a way to manage and control the execution of tasks in a multithreaded environment.
• Allows for easy management of thread pools, reducing overhead of creating new threads for each task.

• Provides a way to schedule tasks for execution at a specific time or with a delay.

• Supports task cancellation and interruption.

• Facilitates handling of task dependencies and coordination between tasks.

• Offe...read more
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Round duration - 30 minutes
Round difficulty - Easy

HR round with typical behavioral problems

BST formation code in java

Q1. Multi Threading consumer producer
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Q2. User Defined Exceptions
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Q1. Scenario based question
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Q2. Work Life Balance
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It was not difficult ..it was good ..overall experience was good

Not too difficult ...array realated question were asked

Asked about introduction and then few coding questions

Q1. Given a code, what will be the output of this?
Ans. 
The output of the code will be the sum of the elements in the given array.
• The code likely involves iterating through the array and adding up the elements.

• Make sure to handle edge cases like empty arrays or arrays with negative numbers.

• Example: If the array is [1, 2, 3], the output will be 6.
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Q2. What is a hashMap and difference between HashMap and concurrentHashMap
Ans. 
HashMap is a data structure in Java that stores key-value pairs. ConcurrentHashMap is a thread-safe version of HashMap.
• HashMap is not thread-safe, while ConcurrentHashMap is thread-safe.

• ConcurrentHashMap allows concurrent read and write operations without the need for external synchronization.

• HashMap allows null keys and values, while ConcurrentHashMap does not allow null keys or values.
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Q1. Introduce yourself
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I am a Java Developer with 5 years of experience in developing web applications using Java, Spring, and Hibernate.
• 5 years of experience in Java development

• Proficient in Spring and Hibernate frameworks

• Strong understanding of web application development
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