The Optional utility class, introduced in Java 8 as part of the java.util package, is one of several key features added alongside functional programming, the new Date and Time API, and immutability improvements. Its primary goal is to reduce the likelihood of NullPointerException by providing a more expressive way to…
1. What is Java Collection Framework? List out some benefits of the Collection framework.Java Collection Framework is a collection of data structure tools with the best-optimized performance, for example, fetching data from ArrayList gives O(1) times complexity and updating data in LinkedList takes O(1) times complexity. It provides many tools…
Hibernate is an ORM (Object Relational Mapping) framework to map Java objects with relational (rows and columns) database tables. ORM tools map Java objects with loaded data fetched from the database for example employee details and update them back to the database with newly provided details. It is a medium…