Shell Recharge Solutions Senior Software Engineer Interview Questions and Answers

Q1. Detailed interview with technicalities and about your profile
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Q2. Technologies Worked with.
Ans. 
Experienced with Java, Python, SQL, HTML, CSS, JavaScript, and Git.
• Java

• Python

• SQL

• HTML

• CSS

• JavaScript

• Git
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Q3. Coding with your expertise in your area and others. Will update other questions soon
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Q4. Salary discussion
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Q5. Joining within a month
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Q1. What is the use of static keyword
Ans. 
Static keyword is used in programming to declare variables, methods, or classes that belong to the class itself rather than instances of the class.
• Static variables are shared among all instances of a class

• Static methods can be called without creating an instance of the class

• Static classes cannot be instantiated and are used for grouping related methods or constants

• Static keyword is also used in C to declare functions t
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Q1. Describe Life cycle in react
Ans. 
React has three main phases in its lifecycle: mounting, updating, and unmounting.
• Mounting: when a component is created and inserted into the DOM

• Updating: when a component is updated due to changes in props or state

• Unmounting: when a component is removed from the DOM

• Lifecycle methods can be used to perform actions at each phase, such as componentDidMount() or componentWillUnmount()

• React also has error handling methods,
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Q2. Explain strict mode in javascript and it's use
Ans. 
Strict mode is a way to write secure and optimized JavaScript code.
• Enables catching of silent errors

• Disallows duplicate property names or parameters

• Prevents use of undeclared variables

• Makes `eval()` safer to use

• Throws errors on invalid usage of `this` keyword
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CURD operations along with implementation of a mock UI

Q1. Tell about Oops concepts
Ans. 
OOPs concepts are fundamental principles in object-oriented programming, including inheritance, encapsulation, polymorphism, and abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the complex imple...read more
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Q1. Will ask coding related
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Q1. What is Expected salary
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