Statements (730)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:API
gptkb:Java_Enhancement_Proposal |
| gptkbp:addresses |
Performance issues
Performance bottlenecks. Null handling in switch statements Switch expressions Type checking in switch statements Rendering issues on mac OS. |
| gptkbp:affects |
Java developers
Java Card developers |
| gptkbp:aims_to |
Code readability
Graphics performance Enhance security Reduce boilerplate code Simplify coding with switch statements Simplify coding patterns improve release cadence improve release process CPU usage. |
| gptkbp:approves |
2021-09-14
2021-09-15 September 2021. JDK Release Team JDK Project. |
| gptkbp:author |
gptkb:Brian_Goetz
gptkb:J._B._Rainsberger JCP Executive Committee Brian Goetz. J. B. Ritchie |
| gptkbp:benefits |
Startups
Freelancers Software engineers Improves code readability and maintainability. Reduces boilerplate code. Simplifies complex switch statements. More expressive switch cases. Potential complexity in understanding. Expected positive outcomes. Identifying potential risks. Measuring project success. Creative applications. |
| gptkbp:challenges |
Ensuring backward compatibility.
Addressing project challenges. |
| gptkbp:collaborated_with |
gptkb:Java_community
open-source contributors industry partners Open source projects by industry experts. Java language team By multiple contributors. by multiple contributors. by various stakeholders. |
| gptkbp:collaborations |
Collaborative effort with the community.
|
| gptkbp:community_engagement |
Engagement through forums and discussions.
Engaging with the Java community. |
| gptkbp:community_impact |
Potential to reduce boilerplate code.
|
| gptkbp:community_involvement |
Encouraging community involvement.
Active community discussions. Open for public comments. |
| gptkbp:community_support |
Strong community support.
|
| gptkbp:contains |
Multiple examples provided in documentation.
|
| gptkbp:contributed_to |
gptkb:Java_Enhancement_Proposal
Java language evolution Java 17 features Java graphics stack. |
| gptkbp:contribution |
Contributes to the evolution of Java.
Open for contributions. Significant contribution to Java language evolution. Contributions from the Java community. |
| gptkbp:created |
2021-07-14
2021-09-15 2022-09-15 |
| gptkbp:date |
2020-09-15
|
| gptkbp:dependency |
Depends on JEP 394.
|
| gptkbp:developed_by |
Open-source model.
|
| gptkbp:discusses |
gptkb:software_framework
JDK mailing lists. Open JDK mailing list. https://openjdk.java.net/jeps/420 Enhances the switch statement |
| gptkbp:effective_date |
2022-03-10
|
| gptkbp:enables |
More concise code
|
| gptkbp:ends_at |
2022-01-10
|
| gptkbp:enhances |
Code readability
Development tools Type checking Type safety Rendering quality User experience. Plans for future enhancements. Interoperability with other platforms Pattern matching capabilities Switch expressions Java FX on mac OS |
| gptkbp:error_handling |
Enhanced error handling capabilities.
|
| gptkbp:example |
Switch expressions with patterns.
switch (obj) { case String s -> ...; } case Point p -> ...; |
| gptkbp:exemplifies |
Code readability
|
| gptkbp:facilitates |
More concise code
faster updates Future graphics developments. |
| gptkbp:features |
Pattern Matching
Pattern Matching for instanceof. Null patterns in switch. Record patterns in switch. Sealed class patterns in switch. Type patterns in switch. |
| gptkbp:feedback |
Positive feedback from early adopters.
Community feedback encouraged. Open for community feedback. Community feedback is encouraged. Feedback from Java user groups. Feedback through Open JDK mailing lists. Incorporating community feedback. |
| gptkbp:first_published |
2023-01-10
2021-09-15 2022-01-10 2022-09-15 |
| gptkbp:focuses_on |
Performance improvements.
|
| gptkbp:formulation |
New syntax for switch cases.
New case patterns. |
| gptkbp:frequency |
six months
|
| gptkbp:future_plans |
Further enhancements planned.
Further enhancements to pattern matching. |
| gptkbp:goal |
Improve performance.
Reduce boilerplate code. Simplify the use of switch statements. Enhance type safety. Enhance developer productivity. Encourage functional programming styles. Facilitate better error handling. Increase expressiveness. Make code more concise. Support new language features. Support pattern matching in switch. To simplify the use of switch statements. |
| gptkbp:has_community |
Open JDK Mailing List
|
| gptkbp:has_documentation |
Comprehensive documentation provided.
User documentation available. |
| https://www.w3.org/2000/01/rdf-schema#label |
JEP 420
|
| gptkbp:impact |
Java developers
Improves code readability and maintainability. Changes how switch statements are written. Improves readability and reduces boilerplate code. |
| gptkbp:improves |
gptkb:language
Code readability Type safety GPU utilization Rendering quality Null safety Type safety in switch expressions Java Card API GPU utilization. |
| gptkbp:includes |
gptkb:Pattern_Matching_for_instanceof
API changes bug fixes feature enhancements performance improvements New features new features New language features Pattern matching features New methods in the Completable Future class New methods in the Instant class New methods in the Local Date class New methods in the Local Time class New methods in the Optional class New methods in the Zone Id class New methods in the Zone Offset class New methods in the Clock class New methods in the Duration class New methods in the Local Date Time class New methods in the Map class New methods in the Month Day class New methods in the Offset Date Time class New methods in the Offset Time class New methods in the Period class New methods in the Stream class New methods in the String class New methods in the Year Month class New methods in the Year class New methods in the Zoned Date Time class feature releases New methods in the File class New methods in the Process Handle class New methods in the Thread class Null Pointer Exception.get Message() improvements |
| gptkbp:influences |
Java language features
Future Java language features future JDK releases |
| gptkbp:integrates_with |
Integration with existing Java features.
|
| gptkbp:introduced |
gptkb:Java_SE_18
gptkb:JDK_18 gptkb:Java_17 gptkb:Java_21 New syntax for instanceof New syntax for switch statements New cryptographic algorithms New case labels |
| gptkbp:is_a_document_that |
Java SE 18 features
outlines JDK 18 features provides JDK 18 release information |
| gptkbp:is_a_framework_for |
JDK release planning
Java SE 18 development |
| gptkbp:is_a_resource_for |
Java developers
Documentation available online. Documentation available on Open JDK. |
| gptkbp:is_adopted_by |
gptkb:Open_JDK_community
gptkb:software Large enterprises Open-source projects startups Enterprise applications Java developers large organizations Open Source projects Developers. Software developers. Expected to be widely adopted. High among Java developers. Challenges in migrating existing code. Potential resistance from legacy code. |
| gptkbp:is_aimed_at |
Mobile applications
enterprise applications Enterprise applications Security enhancements Developers using mac OS. |
| gptkbp:is_aligned_with |
gptkb:Java_SE_specifications
Industry standards Industry trends. Java SE features Java's long-term vision. Java SE release strategy Apple's graphics technologies. Modern graphics standards. |
| gptkbp:is_analyzed_in |
Research papers
Technical reports Software engineers Code reviews Technical papers technical reviews |
| gptkbp:is_associated_with |
gptkb:Java_community
|
| gptkbp:is_available_in |
JDK 17 release
|
| gptkbp:is_celebrated_in |
Innovative approach.
|
| gptkbp:is_challenged_by |
Legacy code
|
| gptkbp:is_cited_in |
gptkb:Java_Enhancement_Proposal
Academic journals Academic research Java documentation Other JE Ps. |
| gptkbp:is_compared_to |
Previous Java versions
Traditional instanceof |
| gptkbp:is_compatible_with |
Backward compatible with existing switch.
Backward compatible. previous JDK versions Existing Java applications Existing Java applications. |
| gptkbp:is_considered |
Future enhancements
Future Java versions Future Java releases. Future enhancements. Future updates. |
| gptkbp:is_considered_as |
A significant update.
|
| gptkbp:is_criticized_for |
Java experts
|
| gptkbp:is_described_as |
Online tutorials
Enhances the instanceof operator to allow pattern matching. Java documentation Java tutorials Pattern Matching for switch Introduces a new rendering pipeline for mac OS. Java blogs Java podcasts Enhances the switch statement to allow pattern matching. JDK 18 Release Process Enhances the Java programming language with pattern matching for switch expressions and statements. JDK 17 Release Process JDK 17 Release Management Defines the release schedule for JDK 15. JDK 14 API Changes |
| gptkbp:is_designed_for |
Smart cards
|
| gptkbp:is_discussed_in |
gptkb:Java_conferences
gptkb:software_framework Online courses Technical specifications Webinars online communities Workshops. Technical conferences Developer communities Technical forums technical blogs Technical meetings. Technical forums. Java forums Java mailing lists Open JDK mailing lists. Java stakeholders JCP meetings |
| gptkbp:is_documented_in |
gptkb:API
gptkb:chess_match API documentation Release notes JDK 18 Release Notes Java API documentation Java Documentation Technical specifications. release documentation JDK 17 Release Notes Java Enhancement Proposal documentation Open JDK documentation Open JDK documentation. JEP 420 documentation. JEP 420 specification. |
| gptkbp:is_essential_for |
gptkb:Java_Enhancement_Proposal
|
| gptkbp:is_evaluated_by |
Industry experts
Technical committees Java developers performance improvements compatibility issues security enhancements Performance improvements Java experts User satisfaction. Based on community feedback. Compatibility. Performance benchmarks. Performance improvements. JDK release team |
| gptkbp:is_expected_to |
Improve performance
Enhance performance Enhance user experience. Reduce development time Increase adoption Set new standards. Enhance graphics capabilities. Simplify type checks Increase developer productivity Future enhancements. Change coding paradigms Enhance graphics rendering. |
| gptkbp:is_explored_in |
gptkb:Workshops
Research papers Meetups Java workshops Java researchers |
| gptkbp:is_implemented_in |
gptkb:Database_Management_System
gptkb:Java_FX_17 gptkb:Java_SE_17 gptkb:JDK_18 gptkb:JDK_18_Compiler gptkb:Java_17 gptkb:chess_match In Development Complexity in implementation. JDK Enhancement-Proposal In progress. JDK 17 and later. JDK 17. Proposed implementation in the Java language. JDK developers. JDK 21 implementation. Requires changes to the compiler. Details available in the JEP document. JDK 21 Early Access Builds. https://openjdk.java.net/jeps/420#implementation JDK 17 Preview feature |
| gptkbp:is_influenced_by |
Functional programming
User feedback industry trends Functional programming concepts Industry trends community feedback User feedback. Functional programming paradigms User requirements. Industry trends. |
| gptkbp:is_integrated_with |
Java ID Es
|
| gptkbp:is_motivated_by |
Simplify the common coding pattern of type checking and casting.
|
| gptkbp:is_optimized_for |
mac OS environment.
|
| gptkbp:is_part_of |
gptkb:JDK_17
gptkb:Java_Card_3.1 gptkb:Java_SE_17 gptkb:Java_SE_18 gptkb:Java_SE_Platform gptkb:Java_SE_platform gptkb:Java_Enhancement_Proposal Java development process Java language evolution Java language features Java platform evolution Java ecosystem. Java development lifecycle Java 18 features Java Enhancement Proposals. Java SE 18 documentation Java SE. Java release notes Java SE 18 release framework Java SE 18 release guidelines Java SE 18 release process JDK Enhancement-Proposal process. Java graphics ecosystem. Java Card ecosystem Java's rendering capabilities. Java 17 release. |
| gptkbp:is_promoted_by |
webinars
Java tutorials Java user groups Community outreach. Documentation. Java advocates Java community. Java influencers Java community events. |
| gptkbp:is_recognized_by |
Industry experts.
Java developers. |
| gptkbp:is_referenced_in |
gptkb:JEP_421
technical specifications academic papers Java specifications Java tutorials Technical blogs Technical documentation. Java SE 18 release notes Java books JDK release management |
| gptkbp:is_reflected_in |
Java best practices
Java coding standards |
| gptkbp:is_related_to |
gptkb:JEP_411
gptkb:JEP_391 gptkb:JEP_394 gptkb:JEP_406 gptkb:JEP_417 gptkb:JEP_418 gptkb:JEP_419 gptkb:JEP_421 gptkb:JEP_422 Pattern Matching JEP 391. JEP 418. Graphics rendering. JDK release strategy |
| gptkbp:is_reviewed_by |
gptkb:software_framework
gptkb:Java_SE_Review_Board gptkb:Java_Language_Committee gptkb:Java_community Approved Peer reviewers Technical committees peer reviewers Java Community Java community members Java experts Community forums. Technical reviews Peer reviewers. Technical committees. Under review. Java magazines JDK Review Board. Expert reviewers. Open JDK reviewers. |
| gptkbp:is_standardized_by |
Java release cycles
|
| gptkbp:is_supported_by |
gptkb:Open_JDK_community
gptkb:Java_Card_Development_Kit gptkb:Java_frameworks gptkb:software gptkb:software_framework gptkb:video_game gptkb:Java_community gptkb:Java_libraries Cloud services Community feedback IDE tools Java developers Java user groups Third-party vendors Development tools. Community contributions. Open-source contributions. Java ID Es Java certification programs Java Development Kit. Java FX. Java training programs Java 17 and later mac OS developers. |
| gptkbp:is_tested_for |
Continuous integration systems
Development environments. Java developers Quality assurance teams production environments Beta versions Continuous integration pipelines beta releases Extensive testing required. JDK 17 builds JDK 18 Testing Suite Java QA team Real-world applications. Open JDK testing framework. QA environments Extensive testing planned. Java FX applications. Java SE 17 Early Access Builds J Unit and other testing frameworks. Various environments. JDK 17 Early Access builds |
| gptkbp:is_used_by |
Java SE 18 development team
|
| gptkbp:is_used_in |
gptkb:Cloud_Computing_Service
|
| gptkbp:is_utilized_in |
gptkb:High_School
gptkb:software_framework Financial institutions Web development Mobile applications microservices architecture Enterprise applications Software development projects Game development. Data science applications Cross-platform applications. Modern Java applications |
| gptkbp:key |
gptkb:Magic:_The_Gathering_set
gptkb:Java_SE_18 Pattern Matching Java SE 18 strategy Pattern matching, switch enhancements. |
| gptkbp:keywords |
Pattern Matching, instanceof.
|
| gptkbp:language |
gptkb:Switch_Expressions
Similar to features in Scala and Kotlin. |
| gptkbp:latest_version |
gptkb:JDK_17
gptkb:15 gptkb:JDK_15 gptkb:JEP_420 1.0 September 2023. Java SE 21. JDK 21. JDK 17+ JEP 420. |
| gptkbp:library |
Java standard libraries.
|
| gptkbp:migration |
Existing switch statements may need updates.
|
| gptkbp:modifications |
New syntax for switch cases.
|
| gptkbp:next_edition |
Potential for further enhancements.
|
| gptkbp:notable_achievement |
Java Card development.
|
| gptkbp:notable_album |
2021-09-15
September 2021. |
| gptkbp:notable_production |
Minimal impact on existing code.
|
| gptkbp:notable_recipients |
gptkb:Database_Management_System
gptkb:Brian_Goetz gptkb:Dan_Smith gptkb:Alex_Buckley gptkb:Javac_Team gptkb:Maurizio_Cimadamore gptkb:Jesse_Glick open-source projects Lambda Team Pattern Matching Team |
| gptkbp:performance |
Minimal impact expected.
Minimal performance impact expected. Expected to improve performance. |
| gptkbp:plot_summary |
Enhances the Java programming language with pattern matching for switch expressions and statements.
Second preview of pattern matching for switch. Pattern matching for instanceof improves type checking. |
| gptkbp:production_location |
Adoption in production systems.
|
| gptkbp:project |
Regular updates provided.
Vision for the future of Java. Managed by the Open JDK project. Enhance Java language capabilities. Timeline available on Open JDK. |
| gptkbp:proposed_by |
gptkb:Database_Management_System
gptkb:Open_JDK_Community gptkb:Pattern_Matching_for_instanceof gptkb:software_framework gptkb:JDK_18 gptkb:Java_community 2021-07-14 JDK Enhancement-Proposal Committee Pattern Matching for switch JDK 18 improvements JDK 17 Java Card Changes JDK 17 Release Candidate |
| gptkbp:provides |
enhanced performance
release notes Backward compatibility More concise syntax New syntax for switch statements New syntax for switch expressions guidelines for JDK releases Better integration with mac OS features. enhanced switch statement |
| gptkbp:provides_information_on |
Java feature proposals
JDK feature development Java SE 18 feature development Java SE 18 release planning Java SE 18 release process. |
| gptkbp:published_by |
gptkb:Java_Magazine
Open JDK website JEP index. |
| gptkbp:reduces |
CPU overhead
Boilerplate code |
| gptkbp:regulatory_compliance |
Conforms to Java Language Specification.
Conforms to Java language standards. Must conform to Java Language Specification. |
| gptkbp:related_concept |
Java SE specifications.
Java SE standards. |
| gptkbp:related_jeps |
gptkb:JEP_411
gptkb:JEP_384 gptkb:JEP_386 gptkb:JEP_387 gptkb:JEP_388 gptkb:JEP_389 gptkb:JEP_390 gptkb:JEP_391 gptkb:JEP_392 gptkb:JEP_393 gptkb:JEP_394 gptkb:JEP_395 gptkb:JEP_396 gptkb:JEP_397 gptkb:JEP_398 gptkb:JEP_399 gptkb:JEP_400 gptkb:JEP_401 gptkb:JEP_402 gptkb:JEP_403 gptkb:JEP_404 gptkb:JEP_405 gptkb:JEP_406 gptkb:JEP_407 gptkb:JEP_408 gptkb:JEP_409 gptkb:JEP_410 gptkb:JEP_412 gptkb:JEP_413 gptkb:JEP_414 gptkb:JEP_415 gptkb:JEP_416 gptkb:JEP_417 gptkb:JEP_418 gptkb:JEP_419 |
| gptkbp:related_to |
gptkb:JEP_411
gptkb:JEP_394 gptkb:Pattern_Matching_for_instanceof gptkb:JDK_15 gptkb:Switch_Expressions Pattern Matching Java Card Platform |
| gptkbp:release_date |
September 2020
September 2021 Expected in September 2023. |
| gptkbp:release_format |
Feature Release
Scheduled for JDK 21. |
| gptkbp:released |
gptkb:JDK_17
gptkb:JDK_15 gptkb:JDK_18 gptkb:Java_17 Included in JDK 17. available on Open JDK website |
| gptkbp:replaced_by |
gptkb:JEP_421
Open GL pipeline Java 2 D pipeline |
| gptkbp:requires |
gptkb:JEP_411
gptkb:JDK_17_runtime Java 17 or later mac OS 10.14 or later Java SE 17 or later mac OS 10.14 or later. |
| gptkbp:resulted_in |
Community collaboration
|
| gptkbp:security_features |
No new security risks introduced.
|
| gptkbp:specifies |
gptkb:Java_Language_Specification
Enhances the Java programming language Pattern matching for switch expressions. release cadence Allows more expressive case labels. https://openjdk.java.net/jeps/420#specification Pattern Matching for switch expressions and statements. |
| gptkbp:sponsor |
Engaging with stakeholders.
Java developers. JCP members |
| gptkbp:status |
gptkb:Final
gptkb:Preview Standard Feature Final. |
| gptkbp:succeeded_by |
Adoption rate post-release.
|
| gptkbp:supports |
gptkb:Sealed_classes
long-term support High DPI displays Support for complex data structures. High-resolution displays. |
| gptkbp:targets |
gptkb:JDK_17
gptkb:smartphone gptkb:JDK_14 gptkb:JDK_18 gptkb:JDK_21 |
| gptkbp:technology |
Java SE.
Java Language. |
| gptkbp:title |
gptkb:Pattern_Matching_for_switch_(Preview)
gptkb:Pattern_Matching_for_switch_(preview) gptkb:New_mac_OS_Rendering_Pipeline Pattern Matching for switch New mac OS rendering pipeline Pattern Matching for Switch (Preview) Pattern Matching for switch (Standard Feature) Pattern Matching for instanceof (Preview) The Second Preview of Pattern Matching for switch JDK 15 Release Schedule |
| gptkbp:training |
Low learning curve for existing Java developers.
|
| gptkbp:updates |
2021-11-16
2021-09-15 |
| gptkbp:use_case |
Type checking and casting.
Type checking in switch statements. |
| gptkbp:user_experience |
Improved user experience.
Improved developer experience. |
| gptkbp:user_reviews |
gptkb:Brian_Goetz
gptkb:Venkat_Subramaniam gptkb:Jesse_Glick Community review process. Various Java Community members. Standard JEP review process. |
| gptkbp:uses |
Metal API
|
| gptkbp:vision |
Enhance Java language features.
|
| gptkbp:bfsParent |
gptkb:JEP_384
gptkb:JEP_17 gptkb:JEP_33 gptkb:Java_SE_18 gptkb:JDK_15 gptkb:JEP_488 |
| gptkbp:bfsLayer |
4
|