Iris Software Senior Software Engineer Interview Questions, Process, and Tips

Q1. Prepare Java 8, 11 Programs on Java 8 and 11 Multithreading Collection Design patterns Solid principles Spring MVC and boot Rest API
Ans. 
The question asks for programs on Java 8 and 11, multithreading, collections, design patterns, SOLID principles, Spring MVC and Boot, and REST API.
• Java 8 and 11 programs: Provide examples of programs written in Java 8 and 11.

• Multithreading: Discuss the concept of multithreading and provide examples of how it can be implemented in Java.

• Collections: Explain the different types of collections in Java and their usage.

• Desig...read more
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Q1. Same as above with Microservice and strongly Java 8 and 11 programming questions. Streams especially.
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Q1. Related to joining and pay.
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Q1. What is oops concept. How hashmap works
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OOPs concept is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.
• OOPs stands for Object-Oriented Programming

• It focuses on creating objects that interact with each other to solve a problem

• Encapsulation, inheritance, polymorphism, and abstraction are key principles of OOPs

• HashMap in Java is a data structure that stores key-value pairs

• I...read more
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Q1. What are design patterns you have worked in your project
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I have worked with design patterns such as Singleton, Factory, Observer, and Strategy in my projects.
• Singleton pattern was used to ensure only one instance of a class is created.

• Factory pattern was used to create objects without specifying the exact class of object that will be created.

• Observer pattern was used to define a one-to-many dependency between objects so that when one object changes state, all its dependents ...read more
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Q1. Are you able to work in hybrid mode
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Yes, I am able to work in hybrid mode which involves a combination of remote and on-site work.
• Experienced in collaborating with remote team members using communication tools like Slack, Zoom, and Jira

• Comfortable with switching between working on-site and remotely based on project requirements

• Adaptable to different work environments and able to maintain productivity in both settings
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General GD for test communication skill

Q1. Tell me about what is completable future
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CompletableFuture is a class introduced in Java 8 to represent a future result of an asynchronous computation.
• CompletableFuture can be used to perform tasks asynchronously and then combine their results.

• It supports chaining of multiple asynchronous operations.

• It provides methods like thenApply, thenCompose, thenCombine, etc. for combining results.

• Example: CompletableFuture future = CompletableFuture.supplyAsync(() -> 1
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