Breech Oralcare Java Developer Interview Questions and Answers

Q1. Data structures Core java Spring boot Hibernate
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Code was of leetcode medium level.

Q1. Easy level DS code
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Q2. Question related to database
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Q1. Questions related to SQL
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Q2. Inner join of three tables
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Inner join of three tables in SQL
• Use the JOIN keyword to combine three tables based on a common column

• Specify the columns to select from each table

• Use the ON keyword to specify the join condition
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Q3. What is cross join
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Cross join is a type of join operation in SQL that returns the Cartesian product of two tables.
• Cross join does not require any matching condition between the tables.

• It combines each row from the first table with every row from the second table.

• Cross join can result in a large number of rows if the tables are big.

• Example: SELECT * FROM table1 CROSS JOIN table2;
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Q1. Annotations used in Springboot project
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Annotations are used in Springboot project for various purposes such as dependency injection, mapping requests, and handling exceptions.
• Annotations are used to provide metadata to the Spring framework.

• Some commonly used annotations in Springboot are @Autowired, @RestController, @RequestMapping, @ExceptionHandler, and @Service.

• Annotations help in reducing the boilerplate code and make the code more readable and maintain...read more
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Q2. Core java question on exception handling, methods, OOPS
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It was an online coding round where i was given two medium leetcode questions was able to do both of them in the given time and had a positive response from the interviewer

Q1. Questions were asking from java kafka sql and system design all the questions that were asked were of medium difficulty
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Q1. This was my final round with the senior manager in which we did system design for car parking system it was a great round as i enjoyed it a lot.
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Q1. About Myself in details
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Q2. Past internships and work experiences
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Q1. Primary keys, Unique key
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Q2. Usage advantages and disadvantages of Indexing
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SQL- 1 departments with no users
2 dept_id and their respective no. of users

DSA1: Most frequent no. in an array
DSA2: Zero Sum subarray exists

Q1. Java oops concepts
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Q1. Self intro for yourself
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It is very impressive work on Josh technology assessment because we learn many new skills.

Q1. What is api and how it is work ?
Ans. 
API stands for Application Programming Interface. It is a set of rules and protocols that allows different software applications to communicate with each other.
• APIs define the methods and data formats that applications can use to request and exchange information.

• APIs can be used to access services provided by other software applications, such as retrieving data from a database or sending notifications.

• Examples of APIs ...read more
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Q2. What is software development life cycle and which steps are following?
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Software development life cycle (SDLC) is a process used by software developers to design, develop, and test software.
• 1. Planning: Define the project scope, requirements, and objectives.

• 2. Analysis: Gather and analyze user requirements.

• 3. Design: Create a detailed design of the software.

• 4. Implementation: Develop the software based on the design.

• 5. Testing: Test the software for bugs and issues.

• 6. Deployment: Release t...read more
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Difficult to crack the aptitude

Easy to solve coding...............

Q1. They asked three aptitude questions and one coding
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Q2. Project that I done in
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