Traditionally, Java developers have depended on constructors, accessors, equals(), hashCode(), and toString() to define classes for basic aggregation of values. However, this is an error-prone approach that adds little value and diverts attention away from modeling immutable data. Java records were initially offered as a preview in JDK 14 to simplify writing data carrier classes. The second preview was released in JDK 15, and the final version in JDK 16. The JDK Enhancement Proposal JEP 395 has a summary of this history.
While code generators can help reduce boilerplate code, the Java record proposals focus on the semantics of the code. Let's look at the characteristics and benefits of Java records and how to use them to develop a REST API and query a database.
from DZone.com Feed https://ift.tt/3GHgIwY
No comments:
Post a Comment