Priority Technology Holdings Java Developer Interview Questions and Answers

Q1. Java concepts based on streams and oops concepts and singleton class
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Q2. DSA questions like first missing number and rotate array
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Q1. SQL queries based on group by and implementation of min heap
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Q2. Scenario based question like what data structure are used
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Q1. Java based questions like difference between interface and abstract class and spring boot rest API implementation
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Q2. Permutation of the number without duplicates
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Generate all permutations of a given number without duplicates
• Use backtracking to generate all possible permutations

• Avoid duplicates by keeping track of used digits

• Recursively swap digits to generate permutations
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Q1. Java & advance java,spring Boot
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I m to get yourlife company to work.
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Q2. Check my skills
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It's like technical round & Hr round , way of language speaking.
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Q3. I ability to doing work hard in this company
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Q4. I'm have read to extra work form this company
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Q5. I hope I think about me good everything it's OK thank you my side.
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Q1. Regular core java, OOPS, Spring Boot questions. It was like a rapid-fire round.
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Q1. Coding question - find repeat elements in an array
Ans. 
Find repeat elements in an array of strings
• Iterate through the array and store each element in a HashMap with its count

• Check if the count of any element is greater than 1, then it is a repeat element

• Return the repeat elements found in the array
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Q2. Project related questions
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Q3. Build a basic CRUD REST API endpoint
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Build a basic CRUD REST API endpoint
• Create a REST API endpoint for each CRUD operation (Create, Read, Update, Delete)

• Use HTTP methods like POST, GET, PUT, DELETE to perform CRUD operations

• Implement data validation and error handling for each operation

• Utilize a framework like Spring Boot or Express.js to simplify API development
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Q1. Behavioral questions
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Q2. Technical questions about SpringBoot and microservices
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Q3. SQL question - third highest salary
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To find the third highest salary in a SQL table, you can use the 'SELECT TOP 1' statement with 'ORDER BY salary DESC OFFSET 2 ROWS FETCH NEXT 1 ROWS ONLY'.
• Use the 'SELECT TOP 1' statement to retrieve only one record

• Order the records by salary in descending order using 'ORDER BY salary DESC'

• Skip the first two highest salaries using 'OFFSET 2 ROWS'

• Fetch the next record after skipping the first two using 'FETCH NEXT 1 ROW
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Q1. Use of functional interface
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Functional interfaces in Java are interfaces with only one abstract method, used for lambda expressions and method references.
• Functional interfaces can be used with lambda expressions and method references to provide implementation for the single abstract method.

• Examples of functional interfaces in Java include Runnable, Callable, and Comparator.

• Functional interfaces can also have default and static methods in addition
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Q2. Can you use same static method in two different interface
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No, static methods cannot be overridden in interfaces.
• Static methods in interfaces are implicitly public and abstract, so they cannot be overridden.

• If two interfaces have the same static method signature, it will not cause any conflict.

• Implementing classes will have to provide their own implementation of the static method.
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Q1. When will you start a company
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Q2. How Many location in company
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Q3. Who is the CEO of Zoho
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Sir.Sridhar Vembu is the founder and CEO
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Q4. What is the high salary of Zoho
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Q5. Is Zoho a foreign company?
Ans. 
Yes, Zoho is a foreign company based in India.
• Zoho is headquartered in Chennai, India.

• It was founded by Sridhar Vembu in 1996.

• Zoho has offices in multiple countries including the United States, China, Japan, and Singapore.
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Ages, trains, profit losss, hcf lcm, clock, simple interest 30 min

Array string sorting algorithm

Q1. What is Custom exception?
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Custom exception is a user-defined exception that extends the functionality of the built-in exceptions in Java.
• Custom exceptions are created by extending the Exception class or one of its subclasses.

• They allow developers to define their own exception types for specific scenarios.

• Custom exceptions can include additional methods and fields to provide more information about the exception.

• Example: public class CustomExcept...read more
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Q2. What is roles and responsibilities in your project?
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Q3. Find out duplicate element in array?
Ans. 
Use a HashSet to find duplicate elements in an array of strings.
• Create a HashSet to store unique elements.

• Iterate through the array and check if the element is already in the HashSet.

• If it is, then it is a duplicate element.

• Example: String[] array = {"apple", "banana", "apple", "orange"};
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Q1. Mostly questions were on core java and multitasking Difference between wait() and sleep()
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Q2. Synchronization, implementation of HashMap
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Q3. Array questions
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