JEP 21

GPTKB entity

Statements (59)

Predicate	Object
gptkbp:instance_of	gptkb:Java_Enhancement_Proposal
gptkbp:bfsLayer	3
gptkbp:bfsParent	gptkb:Java_Enhancement_Proposal
gptkbp:author	gptkb:Brian_Goetz
gptkbp:community_involvement	Active.
gptkbp:consequences	Improved API design.
gptkbp:contribution	Enhances expressiveness.
gptkbp:design	Simplicity and clarity.
gptkbp:discusses	https://openjdk.java.net/jeps/21
gptkbp:ecological_role	Improves library design.
gptkbp:education	Widely adopted.
gptkbp:end_date	July 2021
gptkbp:example	Sealed interfaces can restrict which classes can implement them. Used in frameworks for better type safety.
gptkbp:features	Pattern Matching. Records.
gptkbp:feedback	Positive.
gptkbp:future_plans	Explore sealed classes.
https://www.w3.org/2000/01/rdf-schema#label	JEP 21
gptkbp:impact	Enhances type system.
gptkbp:is_a_framework_for	Enhances flexibility.
gptkbp:is_adopted_by	High.
gptkbp:is_compatible_with	Backward compatible.
gptkbp:is_described_as	Introduces sealed interfaces to the Java programming language.
gptkbp:is_implemented_in	Completed. Part of Project Loom. Requires compiler support.
gptkbp:is_motivated_by	Control the inheritance of interfaces.
gptkbp:keywords	sealed, interfaces, type system
gptkbp:library	Encourages better practices.
gptkbp:notable_production	Simplifies interface design.
gptkbp:performance	Minimal. No significant impact.
gptkbp:proposed_by	gptkb:Database_Management_System
gptkbp:related_concept	ISO/ IEC 23270.
gptkbp:related_jeps	gptkb:JEP_15 gptkb:JEP_17 gptkb:JEP_18 gptkb:JEP_20 gptkb:JEP_22 gptkb:JEP_23 gptkb:JEP_24 gptkb:JEP_25 gptkb:JEP_26 gptkb:JEP_27 gptkb:JEP_28 gptkb:JEP_29 gptkb:JEP_30
gptkbp:release_date	September 2021
gptkbp:specifies	Java Language Specification.
gptkbp:status	gptkb:Final
gptkbp:targets	gptkb:JDK_17
gptkbp:technology	Java SE. JVM.
gptkbp:title	Sealed Interfaces
gptkbp:user_reviews	gptkb:Venkat_Subramaniam gptkb:Mark_Reinhold gptkb:Jesse_Glick March 2021