Capgemini Senior Software Developer Interview Questions, Process, and Tips

Q1. Write Java 8 streams API code to test if string is a palindrome
Ans. 
Using Java 8 streams API to check if a string is a palindrome
• Use stream to convert the string to a character array

• Reverse the character array using stream

• Compare the reversed array with the original array to check for palindrome
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Q2. Difference between @pathvariable and @requestParam
Ans. 
PathVariable is used to extract values from the URI while RequestParam is used to extract values from query parameters.
• PathVariable is used to bind a method parameter to a URI template variable in a Spring MVC application.

• RequestParam is used to extract query parameters from the URL in a Spring MVC application.

• PathVariable is part of the URI while RequestParam is part of the query parameters.

• PathVariable is used for ma...read more
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Q3. What happens when same key value is entered in HAshmap
Ans. 
When the same key value is entered in a HashMap, the new value will overwrite the existing value associated with that key.
• When a duplicate key is added, the new value will replace the old value for that key

• HashMap does not allow duplicate keys, so each key must be unique

• Retrieving the value for a key will return the most recently added value
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It was a coding interview, for 45 mins
2 questions were given, that weren't hard and were more about checking approaches.

Q1. The round one was technical round, but the interviewer asked one or two technical questions. He directly went with HR and behavioural questions. Although it was supposed to be technical.
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Q2. In the technical he asked me mostly about testing in React.
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Q3. Code a React app to change name state on a click of a button on code sandbox.
Ans. 
Code a React app to change name state on a click of a button on code sandbox.
• Create a functional component with a state for name

• Render a button with an onClick event to update the name state

• Display the name state in the component

• Use CodeSandbox to test the app
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Q1. Build a react todo app.
Ans. 
A React todo app with CRUD functionality.
• Use React hooks to manage state.

• Create a form to add new todos.

• Display todos in a list and allow for editing and deletion.

• Use local storage to persist data.

• Style with CSS or a UI library like Material UI.
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Q2. What is promise in JavaScript?
Ans. 
Promise is an object representing the eventual completion or failure of an asynchronous operation.
• Promises are used to handle asynchronous operations in JavaScript

• A promise has three states: pending, fulfilled, or rejected

• Promises can be chained using .then() and .catch() methods

• Promises can be created using the Promise constructor or the shorthand syntax
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Q3. What is call, apply and bind in JavaScript?
Ans. 
Call, apply and bind are methods used to manipulate the 'this' keyword in JavaScript functions.
• Call and apply are used to invoke a function with a specific 'this' context and arguments.

• Call takes arguments as comma-separated values, while apply takes arguments as an array.

• Bind returns a new function with a specific 'this' context, which can be called later with arguments.

• Bind is useful for creating a new function with
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Q1. What you handling in difficult situation
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Q2. When it happened how you dealt it?
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Normal aptitude questions

Some coding questions

Q1. About java and java spring boot
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