Iris Medical Solutions Java Software Developer Interview Questions and Answers

Q1. Is sql necessary for your project ?
Ans. 
SQL is necessary for most projects involving databases to manage and query data efficiently.
• SQL is essential for creating, updating, and querying databases in most projects.

• Without SQL, it would be challenging to interact with databases and retrieve specific data.

• Examples of SQL commands include SELECT, INSERT, UPDATE, and DELETE.

• SQL can help optimize database performance and ensure data integrity.
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Q2. What is Hql ?
Ans. 
HQL stands for Hibernate Query Language, a query language similar to SQL but used for Hibernate ORM framework.
• HQL is used to perform database operations in Hibernate ORM framework.

• It is similar to SQL but operates on Hibernate objects instead of database tables.

• HQL queries are written in Hibernate-specific syntax.

• Example: 'FROM Employee e WHERE e.department = :dept'

• HQL queries are translated into SQL queries by Hiberna
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Q3. What are views ?
Ans. 
Views in Java are user interface components that display data from a model in a specific format.
• Views are used to represent the user interface in Java applications.

• They display data from a model in a visually appealing format.

• Examples include buttons, text fields, labels, and checkboxes.
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Q4. What are cross joins ?
Ans. 
Cross joins are a type of join operation in SQL that combines each row from one table with each row from another table.
• Cross joins do not have a join condition specified, resulting in a Cartesian product of the two tables.

• They can be used when you want to combine every row from one table with every row from another table.

• Cross joins can lead to a large result set if the tables being joined have many rows.
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Q5. Difference between delete and truncate
Ans. 
Delete removes rows one by one, while truncate removes all rows at once.
• Delete is a DML command, while truncate is a DDL command.

• Delete can be rolled back, while truncate cannot be rolled back.

• Delete fires triggers, while truncate does not fire triggers.

• Delete is slower as it logs individual row deletions, while truncate is faster as it logs the deallocation of the data pages.
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Coding Test- Average standard questions

Q1. API related questions
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Q2. Authentication/Authorization questions
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Q1. Performance improvement related questions
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Q2. SQL query given
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Q1. Normal HR discussion
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Q1. What is object oriented programming
Ans. 
Object oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.
• Objects are instances of classes, which define the structure and behavior of the objects.

• Encapsulation, inheritance, and polymorphism are key principles of object oriented programming.

• Example: In a banking application, a 'Customer' class may have attributes like name and account balance, and methods li
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Q2. React vs angular
Ans. 
React is a lightweight library for building user interfaces, while Angular is a full-fledged framework for web development.
• React is more flexible and allows for easier integration with other libraries and frameworks.

• Angular provides more out-of-the-box features and a more opinionated structure.

• React uses a virtual DOM for better performance, while Angular uses two-way data binding for easier data manipulation.

• React is ...read more
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Q1. Tell me about your self? My name is sireesha. I am from allure. I am pursuing Bsc statistics final year in Basireddy memorial degree college from Rayalasima university,Nandikotkur.
Ans. My name is sireesha. I am from allure. I am pursuing Bsc statistics final year in Basireddy memorial degree college from Rayalasima university,Nandikotkur
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Q2. What are your strengths? My strengths are i am self motivated,hardworking and I am discipline person.
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Q3. What are your skills? C language and java
Ans. 
Proficient in C language and Java programming with experience in developing software applications.
• Strong understanding of data structures and algorithms in C language

• Experience in developing web applications using Java

• Knowledge of object-oriented programming principles in Java

• Familiarity with Java frameworks like Spring and Hibernate
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Q4. What are your hobbies? My hobbies are watching tv,listening to music,cooking.
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Q5. What is the difference between confidence and overconfidence? According to me confidence is the thought I can do and overconfidence is the thought of only i can do.
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Q6. What are the differences between hardwork and smartwork? Hardwork and smart work both are the same key to success. Hard work gives experience and smart work comes from experience.
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Q7. Why should I hire you? As a fresher,I need a platform to prove my skill.If i am in your company I will put my skills. If you hire me I will get professional knowledge and experience also
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Q1. Altered the skills and question's from Resume
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Q1. Multithreading and Method Overriding
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Q1. Asynchronous JavaScript
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Q1. It's all about figures
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Q1. Java coding questions with microservices design patterns.
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Q1. System design and nfr discussion
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Q1. Reverse a string
Ans. 
Reverse a string using built-in functions or manually iterating through the characters.
• Use StringBuilder's reverse() method to reverse the string.

• Iterate through the characters of the string and append them in reverse order to a new string.

• Use recursion to reverse the string.
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It was a 1 hour test. topics were profit and loss, numbers, percentage, speed and time, English comprehension.

Q1. The interviewer asked me about my Resume and projects for 25-30 minutes. Basic questions from the project were also asked. Then 1 easy to moderate coding problem.
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Q2. Find pairs from array whose sum is equal to target.
Ans. 
Find pairs from array whose sum is equal to target.
• Use a hashmap to store the difference between target and each element in the array.

• Iterate through the array and check if the current element exists in the hashmap.

• If it exists, then a pair with the sum equal to target is found.
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Q1. Why IQVIA? What will you bring to the table?
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