Infogain Java Developer Interview Questions and Answers

Program to find min and max no from array of strings

• Iterate through the array and compare each element to find min and max

• Use Integer.parseInt() to convert strings to integers for comparison

• Initialize min and max variables with first element of array

The @Controller annotation is used to create a controller class in Spring MVC, while @RestController is used to create RESTful web services.

• The @Controller annotation is used to create a controller class in Spring MVC, which is used to handle traditional web requests.

• The @RestController annotation is used to create RESTful web services, which return data in JSON or XML format.

• The @RestController annotation is a specialized version of the @Controller annotation that includes t...read more

Yes, I have worked on various data structures like arrays, linked lists, stacks, queues, trees, and graphs.

• I have implemented algorithms using data structures like sorting, searching, and traversal.

• I have optimized code by choosing the appropriate data structure for the problem.

• I have used data structures in projects to efficiently store and manipulate data.

Yes, I have experience working on Multithreading in Java.

• Implemented multithreading using Java's Thread class

• Used synchronized keyword to handle thread synchronization

• Utilized Executor framework for managing thread pools

The @Service annotation is used to mark a class as a service, while the @Repository annotation is used to mark a class as a repository.

• The @Service annotation is typically used on service layer classes, which contain business logic.

• The @Repository annotation is typically used on repository classes, which interact with a database or other data source.

• Both annotations are used for component scanning and dependency injection in Spring framework.

• Example: @Service UserService { .....read more