Akal Information Systems Java Full Stack Developer Interview Questions and Answers

Pagination in JPA allows for retrieving a subset of results from a query by specifying a limit and offset.

• Use the setFirstResult() method to specify the starting index of the results to retrieve

• Use the setMaxResults() method to specify the maximum number of results to retrieve

• Combine setFirstResult() and setMaxResults() to implement pagination in JPA queries

To create a RESTful API, define endpoints, use HTTP methods, handle requests and responses, and follow REST principles.

• Define endpoints for different resources (e.g. /users, /products)

• Use HTTP methods like GET, POST, PUT, DELETE for CRUD operations

• Handle requests and responses in JSON format

• Follow REST principles like statelessness, uniform interface, and client-server architecture

To create a RESTful API, define endpoints, use HTTP methods, handle requests and responses, and follow REST principles.

• Define endpoints for different resources (e.g. /users, /products)

• Use HTTP methods (GET, POST, PUT, DELETE) for CRUD operations

• Handle requests and responses in JSON format

• Follow REST principles like statelessness, uniform interface, and client-server architecture

Pagination in JPA allows fetching a subset of results from a query.

• Use the setFirstResult() method to set the starting index of the results to retrieve

• Use the setMaxResults() method to set the maximum number of results to retrieve

• Combine setFirstResult() and setMaxResults() to implement pagination

To create a RESTful API, you need to define endpoints, use HTTP methods, handle requests and responses, and follow REST principles.

• Define endpoints for different resources (e.g. /users, /products)

• Use HTTP methods like GET, POST, PUT, DELETE for CRUD operations

• Handle requests and responses in JSON format

• Follow REST principles like statelessness, uniform interface, and client-server architecture

Pagination in JPA allows for retrieving a subset of results from a query.

• Use the setFirstResult() method to specify the starting index of the results to retrieve

• Use the setMaxResults() method to specify the maximum number of results to retrieve

• Combine setFirstResult() and setMaxResults() to implement pagination in JPA queries

OAuth is an open standard for access delegation, commonly used for enabling secure authorization between applications.

• OAuth allows a user to grant a third-party application access to their resources without sharing their credentials.

• It involves the exchange of tokens between the client, resource server, and authorization server.

• OAuth 2.0 is the current version and is widely used for authentication and authorization in

Spring annotations are used to provide metadata to Spring framework classes and components.

• Annotations are used to configure Spring beans, dependency injection, AOP, and more

• Examples include @Component, @Autowired, @RequestMapping, @Service, @Repository

• Annotations help in reducing XML configuration and make code more readable and maintainable