InfoQ Homepage Java Content on InfoQ
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Java 10 Could Bring Upgraded Lambdas
A new JEP proposes enhancements to lambda functionality, including better disambiguation, use of the underscore for unused parameters, and shadowing of outer variables. Although these changes would bring lambdas in Java closer to other languages', the community seems divided for now. This JEP complements a series of other proposals to improve the Java language with type inference and better enums.
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Java Enums to Be Enhanced with Sharper Type Support
Java enums will be enhanced with generics support and with the ability to add methods to individual items, a new JEP shows. Since both features can be delivered with the same code change, they are bundled together in the same JEP. The change only affects the Java compiler, and therefore no runtime changes are needed. Although there is no target version, Java 10 seems likely.
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New Vaadin Spring Release Introduces Enhanced View Management
Vaadin, a polyglot framework for building web apps with UI components, released version 1.1 of their Vaadin Spring project featuring bug fixes and a new SpringNavigator class to enhance management of Vaadin Views. Matti Tahvonen, product marketing manager at Vaadin, spoke to InfoQ about this latest release including a discussion on how UIs fit into microservices.
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Introducing Gradle Build Scans
At the Gradle Summit Conference this year, Gradle formally introduced the Build Scan tool, part of their new Cloud Services, for collaborating with project build information with developers. InfoQ spoke to Chris Beams, director of marketing at Gradle, about Gradle Cloud Services and build scans.
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Java Type Inference Won't Support Mutability Specification
Java type inference won't support differentiation of mutable vs immutable variables due to lack of consensus within the community regarding how this should be implemented, recent communication shows. Also, to prevent a long debate about corner cases, a number of such cases will be ruled out. Although the JEP doesn't indicate a target version, Java 10 seems likely.
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Is Gartner's Report of Java EE's Demise Greatly Exaggerated?
Gartner has produced a report called “Market Guide for Application Platforms”, citing Java EE’s “revenue decline” in reporting “a clear shift” in the application platform market. The Java EE community takes issue with those findings, in personal comments to InfoQ.
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Speedment Releases Stream ORM Version 3.0.1
Speedment released version 3.0.1 of their stream object-relational mapping Java toolkit and runtime application, featuring a new declarative Java 8 stream API, an improved user interface, and better code generation. InfoQ spoke to Per-Åke Minborg, co-founder and CTO of Speedment, about this latest release.
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Latest Java 9 Schedule Appears to Be at Risk from the Outset
After approving the feature extension process, Oracle has confirmed July 2017 as release date for Java 9. Similar to a previous estimation by InfoQ, the new schedule involves a longer wait time for feature extension and impacted testing phases which may impose a risk. Early, informal testing might be in place to compensate.
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RxJava 2.0 Released with Support for Reactive Streams Specification
The RxJava team announced their 2.0 release after an 18 month development cycle. The project's "What's Different in 2.0" is a good guide for those developers familiar with RxJava 1.x. This release brings an important milestone. RxJava is a sub-project of ReactiveX, which is "a combination of the best ideas from the Observer pattern, the Iterator pattern, and functional programming".
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The Road to Javaslang 3.0
Javaslang, an open-source functional library that provides persistent data types and functional control structures for Java 8 and beyond, published a roadmap for a major release version 3.0 that promises significant changes to the library to remove unnecessary and deprecated features.
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Oracle Presents First Proposal for Value Types Implementation
A couple of months ago, John Rose, JVM Architect, and Brian Goetz, Java Language Architect, both at Oracle, published the first minimal value type proposal to allow early prototyping. At this point, the proposal makes no changes to the Java language itself, and adds only one new bytecode instruction. InfoQ analysed this proposal to indicate the direction that Project Valhalla is heading.
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JVMs Across the Data Center and Twitter's JDK
The Twitter Sponsored Solutions track at QConSF2016 features an engineering talk on JVMs Across the Data Center and unveils an in-house OpenJDK fork, the Twitter-JDK, with noted potential open-sourcing or release to broader public.
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Enterprise Development Trends 2016: A Survey of JVM Developers by Lightbend
Lightbend surveyed over 2100 JVM developers to study correlations between development and infrastructure trends. Their findings, published in a whitepaper, revealed that microservices and lightweight containers are challenging heavyweight J2EE application servers.
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JAX London: Production Time Profiling Using Java Flight Recorder
During JAX London 2016, Ola Westin of Oracle provided an insight into Java Mission Control.
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Proposed Consolidation of JDK 10 OpenJDK Mercurial Repositories
Joe Darcy, JDK Engineer at Oracle, proposed a consolidation of the Mercurial (Hg) repositories for JDK 10 OpenJDK to a single repository that sparked a debate over scalability, performance, and other difficulties.