JShell: Finally, an Official Shell in Java 9 - DZone
The shell or the REPL is a well-known tool in many programming languages. Typically, this is more common in scripting languages such as Python or Node, but more recently it’s been adopted by JVM languages like Clojure and Groovy as well. The upcoming Java 9 release finally brings this shell functionality to the Java language as well, in the form of JShell. This article will explore what we can do
How to Make an Executable WAR File - DZone
If you ever used Jenkin CI server, you have probably seen their super easy one-line instruction to get started: java -jar jenkins.war. Now that's one awesome way to get your users to try out your product! In this article, I will show you how to make a WAR file self executable just like above. Before I do that, let me tell you a little web app that I made, and then I will show how I converted it in
New Java 7 Language Features - DZone
Last week I was at the Java 7 launch party in Sao Paulo, Brazil and it was really cool. There were a lot of developers on the party to celebrate Java 7 (afterall, we have been waiting for it for 5 years!). I took some pictures at the event: http://www.flickr.com/photos/loiane/sets/72157627015952961/ Video of the event: http://blogs.oracle.com/java/entry/java_7_celebration_begins Slides: http://blo
The Top 10 Unused Features in Java - DZone
10) const, goto What? Yes, they are Java keywords. But they do nothing. 9) Some Java flavors Such as Personal Java, JavaOS. 8) Indexed Jars Indexed Jars are jar files containing a special index file (META-INF/INDEX.LIST) indicating which packages are in the jar. With Ant it's index="true". Its purpose is to speed up classloading and enable lazy loading of Jar files for Applets and Webstart Applica
An Overview of Servlet 3.0 - DZone
JSR 315 (Servlet 3.0) is an update to the existing Servlet 2.5 specification. Servlet 3.0 is focussed on extensibility and web framework pluggability, aligning with the goals of Java EE 6. Ease of Development (EoD) will be supported using newer language features. A reference implementation is available in the GlassFish v3 nightly build. The public review contains: PluggabilityEoDAsync SupportSecur
What is Java VisualVM? - DZone Java
Java VisualVM, the new JDK tool since JDK 6 Update 7, provides a wide range of troubleshooting features for various kinds of Java applications. Whether you're new to this tool or already have some experience with it, the brand new screencast below should serve to give you a thorough introduction or answer any questions you might still have about it: Should this tool do things it currently doesn't?
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