Class RecordExamples

java.lang.Object

net.jrodolfo.java_evolution.java16.RecordExamples

public class RecordExamples
extends Object

Demonstrates records, finalized in Java 16.

Before records, simple immutable data carriers needed a lot of mechanical code: fields, constructors, accessors, equals, hashCode, and toString. That boilerplate obscured the actual data being modeled.

Records solve this by making the state declaration central. The compiler generates a canonical constructor, accessors, equals, hashCode, and toString from the record components.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final record	RecordExamples.Feature	Simple record with generated accessors and value equality.
static final record	RecordExamples.Release	Record with a compact constructor for validation.

Constructor Summary

Constructors

Constructor	Description
RecordExamples()

Method Summary

Modifier and Type	Method	Description
RecordExamples.Feature	feature(String name, int version)	Creates a feature record.
RecordExamples.Release	release(String name, int version)	Uses a compact constructor to validate record data.

Methods inherited from class Object

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

Constructor Details

RecordExamples

public RecordExamples()

Method Details

feature

public RecordExamples.Feature feature(String name,
 int version)

Creates a feature record.

Parameters:

name - the feature name

version - the Java version where it became final

Returns:

a feature record

release

public RecordExamples.Release release(String name,
 int version)

Uses a compact constructor to validate record data.

Parameters:

name - the language name

version - the Java version

Returns:

a validated release record