ARC Document Solutions Java Developer Intern Interview Questions and Answers

Check if a string containing only specific characters is valid by ensuring all opening brackets have corresponding closing brackets.

• Use a stack to keep track of opening brackets and pop when a closing bracket is encountered.

• If stack is empty at the end, return true. Otherwise, return false.

• Example: Input: '()[]{}', Output: true

Spring Framework is a popular Java framework for building enterprise applications. Microservices are a software development technique that structures an application as a collection of loosely coupled services. MySQL is a relational database management system, while MongoDB is a NoSQL database.

• Spring Framework is a comprehensive framework that provides support for developing Java applications. It offers features like de...read more

CORS is a security feature that allows or restricts resources on a web server to be requested from another domain. AuthGuard is a feature in Angular that protects routes from unauthorized access.

• CORS stands for Cross-Origin Resource Sharing and is a security feature implemented by browsers to restrict or allow web resources to be requested from a different domain.

• CORS is used to prevent malicious websites from making u...read more