TO THE NEW Interview Questions and Answers

General awareness, half hour

Line sketch, half n hour.

Q1. One to one with art director
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Q2. About the company policies, team etc
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Q3. About my journey throughout the time span
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Q4. About the role I have to do
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Q5. About the leaving reason of previous company.
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Q1. Pattern based ques: code 1 23 345 6789
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Q2. Code to find freq of all chars in a string using hash map
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This code snippet counts the frequency of each character in a string using a hash map (dictionary in Python).
• Use a hash map (dictionary) to store character counts.

• Iterate through each character in the string.

• For each character, increment its count in the hash map.

• Example: For the string 'hello', the output will be {'h': 1, 'e': 1, 'l': 2, 'o': 1}.
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Q3. Exception handling output ques
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Exception handling is crucial for managing errors in software applications, ensuring stability and user experience.
• Use try-catch blocks to handle exceptions gracefully. Example: try { riskyCode(); } catch (Exception e) { handleError(e); }

• Always log exceptions for debugging purposes. Example: logger.error('Error occurred', e);

• Avoid using generic exceptions; catch specific exceptions to handle different error types appro...read more
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Q4. String o/p ques based on string pool.
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Understanding string pool in Java helps manage memory efficiently and optimize string operations.
• String literals are stored in the string pool, which is a special memory area.

• When a string is created using a literal, it checks the pool first to see if it exists.

• Example: String s1 = "Hello"; String s2 = "Hello"; // s1 and s2 point to the same object in the pool.

• Using 'new' keyword creates a new string object in heap mem...read more
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Q5. Spring boot vs spring and microservice adv/ challenges
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Spring Boot simplifies Spring application development, while microservices enhance scalability and maintainability.
• Spring Boot offers auto-configuration, reducing boilerplate code. Example: Setting up a REST API with minimal configuration.

• Microservices architecture allows independent deployment of services, enhancing scalability. Example: A user service and an order service can be deployed separately.

• Spring provides a ...read more
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Q6. Mapping in hibernate and entity class annotations. Transient use
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Hibernate mapping uses annotations to define entity relationships and transient fields that should not be persisted in the database.
• @Entity: Marks a class as a Hibernate entity, representing a table in the database.

• @Table: Specifies the table name if it differs from the entity name, e.g., @Table(name = "users").

• @Id: Defines the primary key of the entity, e.g., @Id @GeneratedValue(strategy = GenerationType.IDENTITY) for...read more
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Q7. Functional interface and lambda. Some oops ques on interface and abstract class.
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Q1. Code to find loop in linked list
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Detects if a linked list has a cycle using Floyd's Tortoise and Hare algorithm.
• Use two pointers: slow and fast. Slow moves one step, fast moves two steps.

• If there's a loop, slow and fast will eventually meet.

• If fast reaches the end (null), the list has no loop.

• Example: For a list 1 -> 2 -> 3 -> 4 -> 2 (cycle), slow and fast meet at 2.
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Q2. Basic array based coding ques
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Q3. Api scenario based ques.
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Q4. Multithreading o/p based ques
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Q5. Put vs patch vs post and some other api based ques
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Q1. About Your project
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Q2. CI/CD,AWS,Docker
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Q3. Any certification
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Yes, I have obtained the AWS Certified DevOps Engineer - Professional certification.
• Obtained AWS Certified DevOps Engineer - Professional certification

• Certification validates expertise in implementing and managing continuous delivery systems on AWS

• Demonstrates ability to automate security controls, governance processes, and compliance validation
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Q1. Projects,Platforms,Docker
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Q2. About your skills in platforms
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