Ernst & Young Liferay Developer Interview Questions and Answers

I have 2 years of experience working with Docker in various projects.

• 2 years of experience working with Docker in various projects

• Proficient in creating Docker containers, managing images, and orchestrating containers using Docker Compose

• Familiar with Docker Swarm and Kubernetes for container orchestration

• Experience in troubleshooting Docker-related issues and optimizing container performance

Yes, I have experience in Kubernetes.

• I have worked on deploying and managing applications on Kubernetes clusters.

• I am familiar with creating and managing Kubernetes resources such as pods, deployments, services, and ingresses.

• I have experience in using tools like kubectl and Helm for interacting with Kubernetes clusters.

• I have implemented CI/CD pipelines using Kubernetes for automated deployment and scaling of applicat

OOP stands for Object-Oriented Programming, a programming paradigm based on the concept of objects.

• OOP focuses on creating objects that contain data and methods to manipulate that data.

• Encapsulation, inheritance, and polymorphism are key principles of OOP.

• Examples of OOP languages include Java, C++, and Python.

Polymorphism in Java refers to the ability of a method to do different things based on the object it is acting upon.

• Types of polymorphism in Java include method overloading and method overriding.

• Method overloading is when multiple methods have the same name but different parameters.

• Method overriding is when a subclass provides a specific implementation of a method that is already defined in its superclass.

Threads in Java allow multiple tasks to run concurrently within a single program.

• Threads are lightweight sub-processes that share the same memory space.

• They are used to improve performance by allowing tasks to run simultaneously.

• Examples include creating a new thread using the Thread class or implementing the Runnable interface.

Spring profile is a way to segregate parts of your application configuration and make it only available in certain environments.

• Spring profiles allow you to define different configurations for different environments such as development, testing, and production.

• You can use @Profile annotation to specify which beans should be loaded based on the active profile.

• Profiles can be activated in various ways such as through app...read more

Annotations used in Spring Security to apply authorization rules before and after a method is called.

• Used in Spring Security to define authorization rules

• @PreAuthorize is used to apply authorization rules before a method is called

• @PostAuthorize is used to apply authorization rules after a method is called

• Both annotations support SpEL expressions for defining rules

A trigger in Salesforce is a piece of code that is executed before or after specific data manipulation events, such as insert, update, or delete.

• Triggers are used to perform custom actions on records in Salesforce.

• Triggers can be written in Apex programming language.

• Triggers can be executed before or after specific events like insert, update, or delete.

• Triggers are associated with a specific object in Salesforce.

• Exampl...read more

There are three types of flows in Salesforce: Autolaunched Flows, Screen Flows, and Scheduled Flows.

• Autolaunched Flows are triggered by a process or Apex trigger and do not require user interaction.

• Screen Flows guide users through a series of screens to collect and display information.

• Scheduled Flows are triggered by a schedule and can automate repetitive tasks.

Java program to sort an array of strings

• Use Arrays.sort() method to sort the array of strings

• Import java.util.Arrays package

• Example: String[] arr = {"apple", "banana", "orange"}; Arrays.sort(arr);

Collections in Java and Spring Boot are used to store and manipulate groups of objects.

• Collections in Java are used to store multiple objects in a single unit.

• Spring Boot provides support for managing collections through various data structures like List, Set, Map, etc.

• Collections in Java and Spring Boot help in organizing and manipulating data efficiently.

• Example: List names = new ArrayList<>();