Apar Industries Web Developer Interview Questions and Answers

Availability refers to the state of being ready for use or accessible. Invoices in accounting are used to track financial transactions. Rebates are discounts given after a purchase. Cash sales are transactions made with immediate payment. Rush orders are orders that need to be processed quickly.

• Availability is the state of being ready for use or accessible

• Invoices in accounting are used to track financial transactions

• R...read more

Inheritance in Java allows a class to inherit properties and behaviors from another class.

• Inheritance is achieved using the 'extends' keyword in Java.

• Subclasses can access the methods and fields of their superclass.

• Java does not support multiple inheritance, but a class can implement multiple interfaces.

Use SQL query with ORDER BY and LIMIT to find the last element in a table.

• Use ORDER BY column_name DESC to sort the data in descending order.

• Use LIMIT 1 to retrieve only the last element.

HTML5 is the latest version of HTML with new features and improvements.

• HTML5 supports new elements like <video>, <audio>, and <canvas> for multimedia content.

• HTML5 introduces new APIs like Geolocation, Web Storage, and Web Workers for enhanced functionality.

• HTML5 includes improvements in semantics, accessibility, and performance compared to HTML.

Find min and max from List of Integers using Java 8 streams.

• Use the `stream()` method on the List to create a stream of integers.

• Use the `min()` method to find the minimum value.

• Use the `max()` method to find the maximum value.

Find 2nd largest element using Java 8 streams from a list of integers.

• Sort the list of integers in descending order using streams.

• Skip the first element to get the second largest element.

Increase the values of a list of integers by 2 and create a new list.

• Iterate through the list of integers

• For each integer, add 2 to its value

• Create a new list with the updated values

Java has introduced several new features in recent versions.

• Java 8 introduced lambda expressions, which allow for functional programming.

• Java 8 also introduced the Stream API for processing collections of data.

• Java 9 introduced the module system, which provides better encapsulation and modularity.

• Java 10 introduced local variable type inference, allowing the omission of explicit type declarations.

• Java 11 introduced the...read more

The @Component and @Repository annotations are used in Spring Framework for different purposes.

• Both annotations are used to define beans in the Spring container.

• @Component is a generic stereotype annotation for any Spring-managed component.

• @Repository is a specialization of @Component used for DAO classes.

• The @Repository annotation provides additional exception translation for data access exceptions.

• Using @Repository i...read more

The @Entity annotation is used in Java to mark a class as an entity, which represents a table in a relational database.

• The @Entity annotation is part of the Java Persistence API (JPA) and is used in object-relational mapping (ORM) to map Java objects to database tables.

• It is typically used in conjunction with other JPA annotations like @Table, @Column, and @Id.

• The @Entity annotation is used to define the entity name, s...read more

The database is configured by setting up the necessary parameters and configurations to ensure proper functioning and performance.

• Database configuration involves defining the database schema, tables, and relationships.

• It includes setting up indexes and constraints for data integrity.

• Configuring database security measures like user access control and permissions.

• Tuning database performance by optimizing query execution ...read more

Dockerfile is a text file that contains instructions to build a Docker image.

• Dockerfile is used to automate the creation of Docker images.

• It specifies the base image, dependencies, environment variables, and commands to run.

• Each instruction in the Dockerfile creates a new layer in the image.

• Dockerfile can be version controlled and shared to ensure consistent builds.

• Example: FROM ubuntu:latest RUN apt-get update && apt-...read more

CI/CD is a software development practice that enables frequent and automated code integration, testing, and deployment.

• CI/CD stands for Continuous Integration and Continuous Deployment.

• It involves automating the process of integrating code changes, running tests, and deploying the application.

• CI/CD helps in reducing manual errors, improving code quality, and increasing development speed.

• Tools like Jenkins, GitLab CI/CD...read more

Mutable classes in Java are classes whose state can be modified after creation.

• Mutable classes allow changing their internal state

• They can have mutable fields or methods that modify their state

• To create a mutable class, define fields with non-final modifiers

• Provide public methods to modify the state of the class

I am satisfied with management's view on cost cutting as they have implemented effective strategies to reduce expenses without compromising quality.

• Management has successfully implemented cost cutting measures without affecting the quality of products or services

• They have involved employees in the cost cutting process to gather valuable insights and suggestions

• Management regularly reviews and adjusts cost cutting strat...read more