Rakuten Software Engineer Level 1 Interview Questions and Answers

Q1. Looker developer
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Q2. Sql server
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Q1. Looker developer
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Q2. Sql server
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Asked some basic level questions

Asked little bit hard questions

Asked depth questions and wrote some sample programs

Q1. Wrote some sample program
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Q1. Salary discussion
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Hackerrank coding round.

Q1. Questions and coding testing your OOPS knowledge
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Q1. Every tech stack, SQL, OOPS, JAVA
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Q1. Why functional interface when we have interface
Ans. 
Functional interfaces provide a single abstract method for functional programming in Java.
• Functional interfaces allow for lambda expressions and method references to be used as instances of the interface.

• Interfaces with multiple abstract methods cannot be used for lambda expressions.

• Example: java.util.function.Function is a functional interface with a single abstract method apply().
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Q2. Java 8 explain all features in short
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Java 8 introduced new features like lambda expressions, streams, functional interfaces, and default methods.
• Lambda expressions: Allows writing concise code by enabling functional programming.

• Streams: Provides a way to work with sequences of elements efficiently.

• Functional interfaces: Interfaces with a single abstract method, used for lambda expressions.

• Default methods: Allows adding new methods to interfaces without br
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Q3. If one functional interface can extend another interface
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Yes, one functional interface can extend another interface in Java.
• Functional interfaces can extend other functional interfaces in Java.

• The child interface can have only one abstract method, but can inherit default methods from the parent interface.

• Example: interface Parent { void method1(); } interface Child extends Parent { void method2(); }
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Q1. Java,sql,springboot
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Q1. Java, sql, spring, springboot, microservice, junit, puzzle or codinques
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Q1. Basic hr questions
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Q1. What is difference between sid 1 and sid 2
Ans. 
SID 1 and SID 2 are two different system identifiers used in software development.
• SID 1 is used to identify a specific software component or module.

• SID 2 is used to identify a specific software instance or version.

• SID 1 is typically assigned during the development phase, while SID 2 is assigned during deployment or release.

• SID 1 helps in managing and organizing the codebase, while SID 2 helps in tracking and managing d
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Q2. Run time behaviour of scan
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The run time behavior of scan refers to how a scanning operation behaves during execution.
• Scan is a common operation used to read input from a source, such as a file or user input.

• The run time behavior of scan depends on the programming language and the specific implementation of the scan function.

• Scan typically reads input sequentially and stops when it encounters a delimiter or reaches the end of the input.

• The behavi...read more
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Q3. What type of components we can use
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Components that can be used in software development
• Libraries: reusable code that provides specific functionality

• Frameworks: a collection of libraries and tools that provide a foundation for building software

• APIs: interfaces that allow different software components to communicate with each other

• Databases: storage systems for managing and organizing data

• UI components: user interface elements like buttons, forms, and menu...read more
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Q4. How many paralleisms are there
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Q5. Multifile system
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