Wipro Senior Service Manager Interview Questions and Answers for Freshers

Java 8 introduces lambda expressions, functional interfaces, streams, and default methods.

• Lambda expressions allow functional programming in Java

• Functional interfaces enable the use of lambda expressions

• Streams provide a concise way to perform operations on collections

• Default methods allow interfaces to have implementation

• Date and Time API improvements

• Nashorn JavaScript engine

JPA stands for Java Persistence API, a specification for object-relational mapping in Java applications.

• JPA is used to map Java objects to relational database tables.

• It provides a set of annotations to define the mapping between Java classes and database tables.

• JPA also supports querying data using the Java Persistence Query Language (JPQL).

Extends is a keyword in object-oriented programming that allows a class to inherit properties and methods from another class.

• Extends is used in inheritance to create a subclass that is a modified version of the parent class.

• The subclass inherits all the properties and methods of the parent class and can also have its own unique properties and methods.

• For example, a class Animal can be extended by a subclass Dog, which ...read more

Use case model is a visual representation of the interactions between users and a system.

• Describes the steps a user takes to achieve a goal with a system

• Identifies actors and their roles in the system

• Shows the flow of events and possible alternate paths

• Helps to identify requirements and potential issues

• Example: Use case model for an online shopping system

• Example: Use case model for a banking system