Class RecordPreviewExamples

java.lang.Object

net.jrodolfo.java_evolution.java14.RecordPreviewExamples

public class RecordPreviewExamples
extends Object

Demonstrates records as a Java 14 preview feature.

Before records, simple immutable data carriers required constructors, fields, accessors, equals, hashCode, and toString. Most of that code was mechanical and easy to generate incorrectly.

Records solve this by letting the developer declare the data components and letting the compiler generate the standard value-based behavior. Records became final in Java 16. This project compiles on JDK 25, so this class uses final record syntax while documenting that Java 14 was the first preview release.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final record	RecordPreviewExamples.Feature	Compact data carrier used to demonstrate record syntax.

Constructor Summary

Constructors

Constructor	Description
RecordPreviewExamples()

Method Summary

Modifier and Type	Method	Description
String	describe(RecordPreviewExamples.Feature feature)	Formats a record using its generated accessor methods.
RecordPreviewExamples.Feature	feature(String name, boolean preview)	Creates a record value.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

RecordPreviewExamples

public RecordPreviewExamples()

Method Details

feature

public RecordPreviewExamples.Feature feature(String name,
 boolean preview)

Creates a record value.

Parameters:

name - the feature name

preview - whether the feature was preview in Java 14

Returns:

a record containing both values

describe

public String describe(RecordPreviewExamples.Feature feature)

Formats a record using its generated accessor methods.

Parameters:

feature - the feature to describe

Returns:

a readable description