Q. What is the REST API? Why is REST stateless? Q. What are the HTTP methods? Q. Difference between PUT VS PATCH?In HTTP, PUT replaces an entire resource, while PATCH updates specific fields within a resource, making PATCH a more efficient choice for partial updates. Here’s a more detailed explanation:…
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…
Problem: The explosion of classes occurs because of N number of combinations for a product, for example, pizza or coffee, which leads to inconsistency in the code like maintainability, scalability, and readability and also requires to addition of more combinations on the requirement. This violates the open-closed principle. If you…