RNF Technologies Application Developer Interview Questions and Answers

Q1. How abstraction and inheritance are related?
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Q2. Given a perticular time, find the angle between hour hand and minute hand.
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Q1. Regrading Self join query
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A self join query is used to join a table to itself in a SQL query.
• Self join is used when a table needs to be joined with itself to compare rows within the same table.

• It requires aliasing the table with different names to distinguish between the two instances of the same table.

• Commonly used in hierarchical data structures or when comparing related rows in a table.
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Q2. Group by query per catagory
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Group by query is used to group data based on a specific category.
• Use the GROUP BY clause in SQL to group data based on a specific column

• Aggregate functions like COUNT, SUM, AVG can be used with GROUP BY to perform calculations on grouped data

• Example: SELECT category, COUNT(*) FROM products GROUP BY category
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Q1. Why public static use
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Q2. Why static is use.Pattern question,hshshdhdhxhxhxhxhdhhxjdjdjdjdjnjsjs
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Intermediate aptitude questions .
No negative marking .
Written test held at JMR infotech

Q1. Mcq and coding questions . Mostly from Java and spring . Coding question is from Array and String (Find frequency )
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Q1. After the written test, face to face interview on technical and hr will be there .
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Q1. What is Object-Oriented Programming (OOP)?
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Q2. What projects have you worked on?
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Medium level questions from all sectors

Technical MCQ and easy coding questions

Q1. According to resume
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Artificial intelligence

Q1. Family background
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Q1. Core java cocepts.
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Q2. Problem solving skills
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Effective problem-solving skills involve analytical thinking, creativity, and collaboration to find optimal solutions.
• Identify the problem clearly: For example, if a software application is crashing, gather logs and user feedback to understand the issue.

• Break down the problem: Divide complex issues into smaller, manageable parts. For instance, if optimizing a slow database query, analyze each component of the query.

• Res...read more
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