Infogain Senior Software Engineer Interview Questions and Answers

Equals and hashCode are crucial for object comparison and collections in Java, ensuring correct behavior in data structures.

• Equals method checks if two objects are logically equivalent. Example: 'a.equals(b)' returns true if 'a' and 'b' are the same.

• HashCode method returns an integer representation of an object. Example: 'a.hashCode()' provides a unique identifier for 'a'.

• Both methods must be overridden together to mai...read more

Microservice design pattern focuses on breaking down a large application into smaller, independent services.

• Each microservice is responsible for a specific function or feature

• Communication between microservices is typically done through APIs

• Microservices can be developed, deployed, and scaled independently

• Examples: Netflix, Amazon, Uber

Use CSS to create a triangle shape

• Use border properties to create a triangle shape

• Set the width and height of the element to 0

• Use borders of different colors to create the triangle shape

Use CSS pseudo-class :hover to change parent element's CSS when child element is hovered

• Use the CSS pseudo-class :hover to target the parent element when the child element is hovered

• Example: .parent:hover .child { /* CSS styles */ }

Create a calculator function that prints the next element in sequence each time it is called.

• Create a function that keeps track of the current number in the sequence

• Each time the function is called, calculate the next number in the sequence based on the previous number

• Print the next number in the sequence each time the function is called

Create a context in React to change language on button click

• Create a context using createContext() method

• Provide a state for language and a function to change it

• Wrap the components that need access to language context with Context.Provider

• Use useContext hook to access language context in components

• Update language state on button click

.NET is a framework for Windows applications, while .NET Core is a cross-platform, open-source framework for modern app development.

• .NET is Windows-only; .NET Core supports Windows, macOS, and Linux.

• .NET is a full framework; .NET Core is modular and lightweight.

• .NET Core allows for side-by-side versioning, enabling multiple versions to run on the same machine.

• .NET Core has improved performance and scalability compared ...read more

Optimizing stored procedures enhances performance, reduces resource usage, and improves maintainability in database operations.

• 1. Use proper indexing: Ensure that the columns used in WHERE clauses are indexed to speed up data retrieval. Example: CREATE INDEX idx_column ON table(column);

• 2. Avoid cursors: Replace cursors with set-based operations to reduce overhead. Example: Use JOINs instead of looping through records.

• 3...read more