Dentaweb Application Developer Interview Questions and Answers

Q1. What is @SpringbootAnnotation and what is difference between @Controller and @RestController.
Ans. 
SpringBootAnnotation is used to enable Spring Boot features in a Java application. @Controller is used for MVC pattern, @RestController is used for RESTful web services.
• SpringBootAnnotation is used to enable Spring Boot features like auto-configuration, component scanning, etc.

• @Controller is used for MVC pattern to handle web requests and return a view, while @RestController is used for RESTful web services to return d...read more
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Q2. What is Stream API write the Stream API Code any code and lambda expression.
Ans. 
Stream API in Java provides a way to process collections of objects in a functional style.
• Stream API allows for easy manipulation of collections using functional programming concepts like map, filter, and reduce.

• Example: List names = Arrays.asList("Alice", "Bob", "Charlie"); names.stream().filter(name -> name.startsWith("A")).forEach(System.out::println);

• Lambda expressions can be used with Stream API to define behavio...read more
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Basic aptitude questions and some game related questions were asked.
There were few psychological questions as well where we had to agree or disagree

2 coding questions were asked.

Q1. Explain about the projects mentioned in Resume.
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Q2. Basic questions related to OS, DBMS, Algorithms and Data Structures
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Q1. Basic Questions related to Oops, SQL, MVC, C#
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Q2. Basic Coding on Stored Procedure
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Q1. What is bussniess rule ?
Ans. 
A business rule is a specific guideline or constraint that dictates how a business operates or makes decisions.
• Business rules are typically defined by stakeholders or subject matter experts.

• They help ensure consistency, compliance, and efficiency in business processes.

• Examples include age restrictions for purchasing alcohol, pricing strategies, and approval processes for expenses.
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Q2. What is update set?
Ans. 
An update set is a group of changes that can be moved from one instance to another in ServiceNow.
• Update sets are used to transport customizations, such as new fields, tables, or scripts, between instances.

• They help in organizing changes and tracking what customizations are being moved.

• Update sets can be previewed, committed, and rolled back if needed.

• Example: Creating a new field in a development instance and moving it
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Q1. COBOL, DB2 - Restart logic, Cursor life cycle
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Q1. About primary keys (how columns can be accommodated in a single primary key)
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Q2. Types of Constructors
Ans. 
Constructors are special methods used to initialize objects in a class.
• Constructors have the same name as the class.

• Types of constructors include default, parameterized, copy, and static constructors.

• Example: public class Person { public Person() { } }
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Q1. Easy Interview, All about Spring Boot Microservices, Rest controller, Feign client, rest Template, Asynchronous calls
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Q2. Angular Framework Interceptors, AWS Cloud deployment and strategies
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Q1. Boxing Unboxing
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Q2. Abstract class and interface
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