Rakuten Interview Questions, Process, and Tips

Basic Reasoning and DS, Algo Question and 4 Coding in java and 3 Sql commands question on grouping

Q1. What is jvm, how objects created and managed in jvm memory ?
Ans. 
JVM is a virtual machine that executes Java bytecode. Objects are created and managed in JVM memory using heap and stack.
• JVM stands for Java Virtual Machine

• It is responsible for executing Java bytecode

• Objects are created in JVM memory using heap and stack

• Heap is used for storing objects and stack is used for storing method calls

• Garbage collector is responsible for managing memory in JVM
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Q2. What is polymorphism, overriding? demostrate by code example?
Ans. 
Polymorphism is the ability of an object to take on many forms. Overriding is when a subclass provides a specific implementation of a method that is already provided by its parent class.
• Polymorphism allows objects to be treated as if they are of any of their compatible types.

• Overriding is used to provide a specific implementation of a method that is already provided by its parent class.

• Example: Animal class has a metho...read more
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Q3. Whatis stack? live implementation in code?
Ans. 
A stack is a data structure that follows the Last-In-First-Out (LIFO) principle.
• Stack is a linear data structure

• Elements are added and removed from the same end called the top

• Common operations include push (add element) and pop (remove element)

• Stack can be implemented using arrays or linked lists
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5 Programming Questions

Q1. Intro and Knowledge exchange
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Q2. Introduction and education and past experience
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Q3. Whether I know the about the company
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Q4. Company products and solutions given to clients
Ans. 
The company offers a range of software products and solutions to clients in various industries.
• The company provides customized software solutions to meet the specific needs of each client.

• Products include CRM systems, data analytics tools, and project management software.

• Solutions may involve cloud-based services, mobile applications, and e-commerce platforms.
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Q5. Past projects and professional experience
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Easy aptitude test and resume based questions. No biggie

Was asked to make a ppt, short simple and was asked to do a swot analysis for various companies

Q1. Rapid fire test which is from great learning.
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