InfoQ Homepage JVM Content on InfoQ
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Microsoft Open-Sources GCToolkit to Tap into JVM GC Logs
By open sourcing GCToolkit, Microsoft promises to tap into the rich information stored within the JVM’s GC logs. The tool promises to provide mechanisms to parse, analyse and visualise the GC log files in a human friendly manner.
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QCon Plus November 2021 is Now Hybrid. Attend Online and In-Person (NY & SF)
The QCon Plus software development conference will be back November 1-5, 2021 - online and in-person. Get the chance to engage and network with professionals driving change and innovation inside the world’s most innovative software organizations.
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Kotlin 1.5 Gets Support for Java 15 Features and a New JVM Compiler
Kotlin 1.5 introduces support for the latest Java features, including record classes, sealed interfaces, and inline classes. Additionally, it brings a number of improvements to the standard library and a new JVM IR compiler.
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GraalVM 21.0 Introduces a JVM Written in Java
GraalVM has released major version 21.0 with a new component, Java on Truffle, that provides a JVM implementation written in Java. GraalVM is itself a polyglot virtual machine that provides a shared runtime to execute applications in multiple languages. Java on Truffle, a JVM written in Java using the Truffle framework, provides a new option to run Java applications. Its code name is Espresso.
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New Relic – the State of Java Report
While self-reported data suggests that running the latest and greatest JVM in production is the way forward, the recent report by New Relic (which monitors real JVMs in production) suggests that the Java landscape is dominated by Java 8, and to a lesser extent, Java 11, with non-LTS releases barely a blip on their radar. Read on to find out what their report says customers are actually using.
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Java Flight Recorder Coming to OpenJDK 8
Java Flight Recorder, originally open sourced in Open JDK 11, is being backported into the mainline Open JDK 8 tree as it comes out of its early access release. Together with JMC 7.1, available from Azul, flight recorder profiling will become accessible to users of both Open JDK 8 and Open JDK 11.
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Writing Web Applications in Java - a Study of Alternatives
Developers familiar with the Java Virtual Machine languages and who want to develop web applications without the difficulties of a JavaScript development stack, have an increasing array of alternatives to JavaScript to choose from. The performance penalty vs. native JavaScript web applications is shrinking.
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Kotlin 1.3.30 Brings Kotlin/Native and KAPT Improvements, and More
JetBrains has released Kotlin 1.3.30. This version is mainly a new bug fix and tooling update for Kotlin 1.3. Kotlin 1.3.30 brings Kotlin/Native and KAPT improvements, support for more operations for unsigned types and arrays, debugging improvements on IntelliJ IDEA, and more.
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Kotlin Q&A with Christina Lee of Pinterest
InfoQ recently sat down with Christina Lee, an Android engineer on the Core UI team at Pinterest, and discussed adoption of Kotlin at Pinterest, organizational challenges Pinterest faced during the adoption, the biggest lesson learned, helpful tips for transitioning to Kotlin from Java, and the topic of her upcoming talk, Representing State: the Kotlin Edition, at KotlinConf 2018.
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Uber Open Sources JVM Profiler for Tracing Distributed JVMs
Uber open sourced a distributed profiler called JVM Profiler in late June. They built JVM Profiler to solve resource allocation issues they had with Apache Spark. Apache Spark is a popular framework for processing large data streams, of which Uber has many. JVM Profiler was built for Spark, but it's applicable to any JVM-based service or application.
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The Current State of Java Value Types
Oracle has been working to bring value types to the Java language and runtime. We present an update on the current status of this work.
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Eclipse Open J9 – an Open Source Java Virtual Machine Based on the Eclipse OMR Project
In early 2016, IBM open sourced the core, non-Java parts of the J9 runtime environment under the Eclipse OMR project. The OMR project is a language-agnostic runtime toolkit. In 2017, IBM also open sourced their J9 JVM as OpenJ9. OpenJ9 consumes Eclipse OMR and itself fits into the Java class libraries from OpenJDK 9 and future releases.
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Brian Goetz Speaks to InfoQ on Data Classes for Java
Brian Goetz, Java language architect at Oracle, introduced an experimental concept of data classes that may someday be integrated into the Java programming language. But there is much work to be done before this concept is worthy of any real attention. Goetz explored the problems and tradeoffs of data classes on the premise that sometimes “data is just data.”
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Kotlin 2017 Roundup and 2018 Outlook
Since the release of Kotlin 1.1 in March 2017 by JetBrains, Kotlin has made huge gains in adoption all around the world. 2017 brought many exciting announcements, and the momentum continues into 2018. InfoQ recently sat down with Hadi Hariri, the team lead for developer advocacy at JetBrains.
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Kotlin 1.2 Introduces Multi-Platform Projects
The latest version of Kotlin makes it possible to share code for the JVM and the JavaScript platform using multi-platform projects. Additionally, it includes a number of language and library improvements, and better compiler performance.