Oracle Financial Services Software Interview Questions, Process, and Tips

Q1. How would you tell a complete Java beginner the difference between set, list and map?
Ans. 
Set is a collection of unique elements, List is an ordered collection of elements, and Map is a collection of key-value pairs.
• Set does not allow duplicates, e.g. a set of integers {1, 2, 3, 4, 5}

• List maintains the order of elements, e.g. a list of names ['John', 'Mary', 'Bob']

• Map stores key-value pairs, e.g. a map of phone numbers {'John': '123-456-7890', 'Mary': '987-654-3210'}
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Q2. How would you train a complete beginner in Java to write their first program?
Ans. 
To train a beginner in Java, start with basic concepts and gradually introduce programming concepts.
• Start with basic concepts like data types, variables, and operators

• Introduce control structures like if-else statements and loops

• Teach object-oriented programming concepts like classes and objects

• Encourage practice and experimentation with simple programs

• Provide resources like online tutorials and exercises

• Offer guidance
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Q3. What is microservices advantages and basic architecture?
Ans. 
Microservices are a software architecture approach where applications are built as a collection of small, independent services.
• Advantages include increased scalability, flexibility, and resilience

• Each service can be developed, deployed, and scaled independently

• Allows for easier maintenance and updates

• Basic architecture involves breaking down a monolithic application into smaller, self-contained services

• Services communi
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Q4. Why is main method static? Can we write static public void main()?
Ans. 
Main method is static because it needs to be called without creating an instance of the class.
• Static methods can be called without creating an instance of the class

• Main method is the entry point of the program

• Main method must have a specific signature: public static void main(String[] args)

• args is an array of strings that can be used to pass command line arguments to the program
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Q5. Asked about current role and responsibilities.
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Q6. Basic cloud concepts like compute, load balancing, container orchestration and deploying on cloud.
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Q7. How would you develop a springboot application?
Ans. 
To develop a Spring Boot application, follow these steps:
• Create a new Spring Boot project using Spring Initializr

• Define the necessary dependencies in the pom.xml file

• Create the necessary Java classes and packages

• Define the application properties in the application.properties file

• Run the application using the Spring Boot Maven plugin or by running the main class

• Test the application using a web browser or a REST client
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Q8. What is the difference between JDK, JRE and JVM?
Ans. 
JDK is a development kit, JRE is a runtime environment, and JVM is a virtual machine that executes Java code.
• JDK includes JRE and development tools

• JRE includes JVM and necessary libraries

• JVM interprets compiled Java code into machine code

• JDK is needed for developing Java applications

• JRE is needed for running Java applications

• Multiple JVMs can run on a single machine
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Q9. Write a program to check if a number is prime or not.
Ans. 
Program to check if a number is prime or not.
• A prime number is only divisible by 1 and itself.

• Loop through numbers from 2 to n-1 and check if n is divisible by any of them.

• If n is divisible by any number, it is not prime.

• If n is not divisible by any number, it is prime.
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Q1. Why do you want to join us?
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Q2. Current roles and responsibilities.
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Q3. Asked if comfortable for location?
Ans. You should say yes to the offered location, but also mention your preferred one as well.
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Had basic aptitude questions

Q1. General resume questions
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Q2. What is bank reconciliation
Ans. 
Bank reconciliation is the process of comparing a company's records of its bank transactions with the bank's records.
• Bank reconciliation ensures that the company's financial records are accurate and up-to-date.

• It involves matching the transactions in the company's accounting system with those in the bank statement.

• Any discrepancies are identified and resolved, such as missing deposits or unauthorized withdrawals.

• Bank r...read more
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Q3. Tell me about GST
Ans. 
GST stands for Goods and Services Tax, a value-added tax levied on most goods and services sold for domestic consumption.
• Implemented in India in 2017 to replace multiple indirect taxes

• Helps in simplifying tax structure and reducing tax evasion

• Has different tax rates for different goods and services, such as 5%, 12%, 18%, and 28%

• Input tax credit can be claimed on taxes paid on inputs used in the production of goods or s
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It was easy only, simple queue and array questions

Q1. Gave two queries , if you know java then its better. One was medium level and other was simple.
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Q2. Write suffix as count in succession
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Q1. Basic questions only.
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Q1. Microservices - adv, disadv
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Q2. Core java collections
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Q1. Java 8 concepts with basic coding questions
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Q2. Basic to medium Spring boot questions
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Q1. Design a parking lot as part of the system design round.
Ans. 
Design a parking lot system with features like ticketing, payment, and space availability tracking.
• Create a class for ParkingLot with attributes like total number of spaces, available spaces, and ticketing system.

• Implement methods for issuing tickets, calculating parking fees, and updating space availability.

• Consider implementing a payment system for customers to pay for parking.

• Include features like tracking available...read more
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Q1. What are your reasons for wanting to switch jobs?
Ans. 
Looking for new challenges and opportunities for growth in a different environment.
• Seeking new challenges to continue learning and growing professionally

• Interested in working with new technologies and methodologies

• Desire for a change in company culture or work-life balance

• Opportunity for career advancement or higher compensation
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