Welcome readers, Greetings for the day.
In this story, I’ll guide you through the use of the Optional class that was introduced in Java 8. Also will look, how to throw a custom exception when an Optional is empty.
1. The purpose of Optional
2. Uses of Optional class API methods
3. Throw an exception when Optional is empty.
The purpose of the Optional is to provide a type-level solution. This means you can represent optional values instead of null references.
Hello Readers, Greetings for the day.!
In this article, we will look at Hibernate caching and get an idea about first-level cache and second-level cache.
In general, caching is a mechanism to store copies of data or files in such a manner so that they can be served quickly. In computer science caching is related to hardware or software component that stores data so that future requests for that data can be served faster; the data stored in a cache might be the result of an earlier computation or a copy of data stored elsewhere. — Wiki
If we are…
Trust your self and you will rock.!