Royal Cyber Senior Android Developer Interview Questions and Answers

Reasoning and aptitude questions are given

Q1. Tell all concepts of Overloading
Ans. 
Overloading is a concept in programming where multiple functions can have the same name but different parameters.
• Functions with the same name but different parameters can be defined in a class

• Overloading allows for flexibility in function usage

• Example: void print(int num) and void print(string text) are overloaded functions
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Q2. Tell me about a live example of inheritance
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Q1. Tell about the your self
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Logic and MCQ were there

Q1. How cobol db 2 works? how to add checkpoint logic.
Ans. 
COBOL DB2 is a programming language used for database management. Checkpoint logic is used to ensure data integrity and recoverability.
• COBOL DB2 is used for accessing and manipulating data in DB2 databases.

• Checkpoint logic in COBOL DB2 involves saving the current state of the database at specific points to ensure data integrity.

• To add checkpoint logic, you can use COMMIT and ROLLBACK statements in your COBOL DB2 progra...read more
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Q2. How jcl works, how to do restart
Ans. 
JCL (Job Control Language) is used to control batch jobs on mainframe systems. Restarting a job involves identifying the step where it failed and resubmitting the job from that step.
• JCL is used to define and control batch jobs on mainframe systems

• To restart a job, identify the step where it failed

• Modify the JCL to start from the failed step by specifying the restart parameter

• Submit the modified JCL to restart the job
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It was easy, the topic is upi

Aptitude + coding Test

Q1. It's about my projects
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Q2. And few Javascript questions
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Q1. General HR questions
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Q1. Closures, hostings, react js, redux, hooks basic
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Q2. Html5, css3, basic javascript stuff
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Q1. React js, ReactHooks, es67 features, bootstrap
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60mintues DSA level coding exam

Q1. Explain React life cycle
Ans. 
React life cycle refers to the series of methods that are invoked in the process of creating, updating, and destroying components.
• Mounting phase: constructor, render, componentDidMount

• Updating phase: render, componentDidUpdate

• Unmounting phase: componentWillUnmount
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Q2. Design a online calculator app
Ans. 
An online calculator app that allows users to perform basic arithmetic operations.
• Include buttons for numbers 0-9 and operators like +, -, *, /

• Implement functionality for clearing input, calculating result, and displaying history

• Consider adding advanced features like memory functions or scientific calculator mode
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