Iris Software Interview Questions, Process, and Tips

Q1. Explain method references in Java 8
Ans. 
Method references in Java 8 are a way to refer to methods or constructors without invoking them directly.
• Method references are shorthand notation for lambda expressions.

• They can be used to make code more concise and readable.

• There are four types of method references: static, instance, constructor, and arbitrary object.

• Example: list.forEach(System.out::println);
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Q2. Microservice Architecture and design patterns
Ans. 
Microservice architecture focuses on breaking down applications into smaller, independent services.
• Microservices are small, independent services that work together to form a complete application.

• Each microservice is responsible for a specific function or feature.

• Design patterns like API Gateway, Circuit Breaker, and Service Registry are commonly used in microservice architecture.

• Microservices communicate with each othe...read more
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Normal programming with mcq

Q1. Multithreading with basic java
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Q1. Pm round with normal project discussion
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Q1. Telephonic basic questions were asked about Java related technologies.
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Q1. Skill based questions as scenario based coding questions were asked. Not hard , average level. Here the focus is more towards your retention pawer rather than your understanding. Prepare java 8 features we...read more
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Q1. Normal stuff about our willingness to contribute and attitude.
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Q1. This happens after you join the company weird right? but it is okay to hire beforehand..
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Coding test on Angular to test the basic concepts

Q1. Difference between promise vs observables?
Ans. 
Promises are used for a single async operation while observables are used for multiple async operations and can be cancelled.
• Promises are eager, meaning they start immediately upon creation.

• Observables are lazy, meaning they only start when subscribed to.

• Promises can only handle a single value or error, while observables can handle multiple values over time.

• Observables can be cancelled, while promises cannot.

• Promises a...read more
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Q2. What is call stack and event loop in JavaScript?
Ans. 
Call stack is a data structure that stores function calls in JavaScript, while event loop manages asynchronous operations.
• Call stack is a mechanism for managing function invocation in JavaScript.

• Functions are added to the call stack when they are invoked and removed when they are completed.

• Event loop is responsible for handling asynchronous operations in JavaScript.

• Event loop continuously checks the call stack and the ...read more
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Q1. Why do you want to join IRIS?
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Q1. Difference between deep and shallow copy
Ans. 
Deep copy creates a new object and recursively copies all nested objects, while shallow copy creates a new object and copies the references to nested objects.
• Deep copy duplicates all levels of the object hierarchy, ensuring that changes in the copied object do not affect the original object.

• Shallow copy only duplicates the top-level object, so changes in the copied object may affect the original object.

• Deep copy is mor...read more
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Q2. Ways to set values in form groups
Ans. 
Ways to set values in form groups
• Use setValue() method to set values in form groups

• Use patchValue() method to set values in form groups

• Use reset() method to set values in form groups
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Q3. How to add dynamic component in view
Ans. 
To add a dynamic component in a view, use a framework or library that supports dynamic rendering and component creation.
• Use a framework like React or Angular that allows for dynamic component creation

• Create a component factory or use a component resolver to dynamically create and render components

• Pass data or props to the dynamic component to customize its behavior

• Update the view or component tree to include the dynami
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Q1. What skills have you hired for ?
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Q1. Why do you want to leave your current organization ?
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Q1. Expectation setting
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