The Common ReusAble SHell (CRaSH) is an interactive shell (with history support and autocompletion) that attaches to a running JVM and can execute several commands for retrieving JVM statistics or changing JVM internals on the fly. It can be used for remote monitoring and administration of existing Java applications and it is fully extensible via custom Groovy scripts.
With the release of Java 7u4, Oracle has finally provided an OSX install of the JDK and JavaFX SDK. The update also brings new features, such as the G1 garbage collector and the JCMD diagnostic framework. Read on to find out more.
Rich Hickey spoke at the Clojure/West conference last weekend about his newest venture, Datomic, which he describes as “a distributed database designed to enable scalable, flexible and intelligent applications, running on cloud architectures.” Datomic sits on Amazon’s DynamoDB, and embeds Datalog, a subset of Prolog, to move queries into the application.
Earlier this week, the first milestone of Ceylon IDE was released, bringing an IDE to the Ceylon language, which saw its first milestone at the end of December. Read on to find out more.
Azul Systems have today announced the release of jHiccup, an open source tool designed to measure the pauses and stalls (or "hiccups") associated with an application's underlying Java runtime platform.
With Scala 2.10 on the horizon, and recent controversial opinions, what really is the story with Scala's backward compatibility, and how will it affect popular Scala libraries? If Josh Suereth is right, a reboot of the Scala Fresh project proposed by David Pollak last year.
Azul Systems have today announced Zing 5.0, eliminating their previous requirement for a hypervisor, and therefore bringing their pauseless JVM to unmodified 64-bit Linux for the first time.
The Apache Harmony PMC initiated a vote earlier this week to begin the process of moving the codebase into the Apache Attic and disbanding the PMC. With 18 for and 2 against, the result will be that the Apache Harmony project will be wound up and placed in the Attic for posterity.
Xtext 2.1 was released this week by the Eclipse Foundation. It comes with many new features and a major innovation: the support for creating domain specific languages targeting the Java virtual machine.
Twitter and Azul Systems have been elected to serve on the JCP Executive Committee for Java SE/EE, on voting percentages of 32% and 19% respectively. Both firms have also joined the OpenJDK project. VMware is no longer represented.
Clojure is rather new member of the LISP family of languages which runs on the Java platform. Introduced in 2007 it has generated a lot of interest. InfoQ had a small Q&A with James Reeves and Christophe Grand, the creators of Enlive and Compojure, about their projects and their experiences working with Clojure.
Last week, Oracle released Java7 to great acclaim. However, an issue identified by the Apache Lucene project pointed to a specific hotspot optimisation bug which kicks in when a loop is executed more than 10,000 times. How serious is this issue, and does it warrant the kind of negative press that has been played out over the last few days?
So far, Kotlin has been primarily known as a Russian island thirty kilometers west of Saint Petersburg. More recently, the Czech company JetBrains introduced a programming language named Kotlin running on the JVM (Java Virtual Machine). It is the intent of the Kotlin language developers to get rid of some challenges in the Java language.
Gavin King, creator of Hibernate, gave a presentation at QCon Beijing on the Ceylon JVM language. Ceylon addresses some limitations of the Java programming language although the project is near the inception phase, with no compiler or IDE support. Since its existence leaked out over twitter, there has been a lot of speculation about the language; read on to find out more from Gavin King
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