Indian Oil Corporation Junior Engineer Interview Questions and Answers for Experienced

Coding questions related java and some questions related java, spring boot

Q1. What is hashmap
Ans. 
HashMap is a data structure that stores key-value pairs and allows for fast retrieval of values based on keys.
• HashMap is part of the Java Collections framework.

• It uses hashing to store key-value pairs in an array.

• Example: HashMap map = new HashMap<>(); map.put("key1", 1); int value = map.get("key1");
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Q2. Multi threading,
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As a fresher I applied, it basic aptitude

GD between group of 10

Q1. Tell me about yourself ?
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Q2. Tell me your strengths and weakness?
Ans. 
My strengths include problem-solving skills, attention to detail, and ability to work well in a team. My weakness is that I can be overly critical of my own work.
• Strengths: problem-solving skills

• Strengths: attention to detail

• Strengths: ability to work well in a team

• Weakness: overly critical of my own work
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Q3. Projects you had worked on?
Ans. 
I have worked on projects involving building automation systems and IoT devices.
• Developed a smart home system using Raspberry Pi and sensors

• Implemented a temperature control system for a greenhouse using Arduino

• Designed a monitoring system for energy consumption in buildings
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Q4. Languages you know as per of your skillset?
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Q1. Dedup sort questions
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Q2. Sort Questions parameters
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Q1. Minimum 4 words
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Q1. Minimum 4 words
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Q1. Minimum 4 words
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Q1. Minimum 4 words
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Basic of c language coding test

Q1. Tell em about self
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1 hr, apptitude and reasoning

C coding with little complexity