Apexon Java Developer Interview Questions and Answers

Q1. Explain Spring Boot
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Q2. What is Redux in React
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Q3. What is Context API in React
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20 aptitude,20 comunication,4 program questions

General topics . topics about online class vs office line class

Q1. In this round also they mainly check communication.after that basic questions about the what you put on your resume
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Q1. General round. In this round they told about the company and bond
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Q1. To connect to your DB what you use in Spring boot
Ans. 
In Spring Boot, we use Spring Data JPA to connect to the database.
• Use @EnableJpaRepositories annotation in the main application class to enable JPA repositories

• Define datasource properties in application.properties or application.yml file

• Use @Entity annotation to define JPA entities

• Use JpaRepository interface to perform CRUD operations on entities
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Q2. What is Component Scan
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Component Scan is a feature in Spring framework that automatically scans and registers Spring components in the application context.
• Component Scan is used to automatically detect and register Spring components like @Component, @Service, @Repository, and @Controller.

• It eliminates the need for manual configuration of bean definitions in the Spring configuration file.

• Component Scan can be configured with base package(s) t...read more
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Q3. Throw vs throws
Ans. 
throw is used to explicitly throw an exception in a method, while throws is used in method signature to declare the exceptions that can be thrown by the method.
• throw is used within a method to throw an exception, while throws is used in the method signature to declare the exceptions that can be thrown by the method

• throw is followed by an exception object, while throws is followed by the exception class names separated ...read more
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Q1. Java8 coding to filter the vowels
Ans. 
Using Java8 to filter vowels from an array of strings
• Use Java8 stream and filter to iterate through each string in the array

• Use a lambda expression to check if each character is a vowel

• Collect the filtered strings into a new array
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Q2. Java8, Multi Threading, Hibernate, JPA
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30 multiple choice questions

Two coding questions

Q1. Oops questions like main principles of oops
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Q1. Deep in project
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Q1. Self intro, family background,some hr questions
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Q1. Explain your Project. What features you have made Git related questions like code merge pull Jira tool Java questions mostly from collectiions Springboot related question Then some design pattern.
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