Apisero Interview Questions and Answers

Analytics in HR enhances decision-making, improves employee engagement, and optimizes talent management through data-driven insights.

• Predictive analytics can forecast employee turnover, allowing HR to implement retention strategies.

• Performance analytics can identify high-performing employees and inform succession planning.

• Sentiment analysis of employee feedback can help improve workplace culture and engagement.

• Rec...read more

Java 8 introduced significant features like lambdas, streams, and the new Date-Time API, enhancing productivity and code readability.

• Lambda Expressions: Enable functional programming by allowing you to pass behavior as a parameter. Example: (x, y) -> x + y.

• Streams API: Facilitates functional-style operations on collections. Example: list.stream().filter(x -> x > 10).collect(Collectors.toList()).

• Default Me...read more

OOP in Java is a programming paradigm based on objects, enabling code reusability, encapsulation, inheritance, and polymorphism.

• Encapsulation: Bundling data and methods that operate on the data within one unit (class). Example: private variables with public getters/setters.

• Inheritance: Mechanism where one class inherits properties and behavior from another. Example: class Dog extends Animal.

• Polymorphism: Ability t...read more

An interface in Java is a reference type that defines a contract for classes to implement methods without providing their implementation.

• Interfaces can contain method signatures and constants but no method bodies.

• A class implements an interface using the 'implements' keyword. Example: 'class MyClass implements MyInterface'.

• Multiple interfaces can be implemented by a single class, allowing for multiple inheritance ...read more

Triggers in databases automate actions in response to specific events on a table.

• A trigger is a database object that is automatically executed or fired when certain events occur.

• Types of triggers include BEFORE, AFTER, and INSTEAD OF triggers.

• Example: A BEFORE INSERT trigger can validate data before it's added to a table.

• Triggers can be used for auditing changes, enforcing business rules, or maintaining referentia...read more

HTTP methods define actions for web requests, including GET, POST, PUT, DELETE, etc.

• GET: Retrieves data from a server (e.g., fetching a webpage).

• POST: Sends data to a server to create/update a resource (e.g., submitting a form).

• PUT: Updates a resource or creates it if it doesn't exist (e.g., updating user info).

• DELETE: Removes a resource from the server (e.g., deleting a user account).

• HEAD: Similar to GET but retr...read more