Return to_Java()

A few nice links about garbage collection Java Garbage Collection handbook http://www.oracle.com/webfolder/technetwork/tutorials/obe/java/gc01/index.html http://www.cubrid.org/blog/dev-platform/understanding-java-garbage-collection/ Wikipedia: Garbage Collection

The Virtual Technology Summits replay videos are quite interesting. Use the link below: https://community.oracle.com/groups/otn-vts-java-replay-library to find some interesting videos about Java 8 DateTime library Java with IoT Java 8 JavaScript Nashorn Docker with Java RaspberryPi and Java

infoq: Java: The Missing Features

https://hub.docker.com/_/java/ It has good instructions on how to invoke a Docker Java container. Docker is an amazing tool for packaging and running software in clean container environments. Deploy Java Apps With Docker = Awesome

Learn how to build, use, and orchestrate Docker containers in DevOps #JavaMagazine   http://ora.cl/Lph 

Docker for Java Developers: How to sandbox your app in a clean environment

Here are some interesting sounding future Java books that will be published over the next few months: O'Reilly   Cloud Native Java Cloud Native Java: Designing Resilient Systems with Spring Boot, Spring Cloud, and Cloud Foundry Cloud Native Java: Designing Resilient Systems with Spring Boot, Spring Cloud, and Cloud Foundry PACKT     Machine Learning in Java Machine Learning in Java Algorithms in a Nutshell (2nd Edition) Publisher: O'Reilly Release Date: 25 Dec 2015 ISBN: 978-1491948927 Algorithms in a Nutshell: A Desktop Quick Reference Core Java Volume 1 - Fundamentals  (10th Edition) Publisher: Prentice Hall Release Date: 28 Dec 2015 ISBN: 978-0134177304 Amazon.co.uk: Core Java -Fundamentals: Volume I: 1 PACKT   Neural Network Programming with Java Neural Network Programming with Java PEARSON   Absolute JAVA Absolute Java Beginning Java Game Development with LibGDX Publisher: Apress...

The JVM Language Summit 2015 just happened. The videos are already up on YouTube. It is a very technical conference with the JVM wizards, on such topics as JVM languages and the future of the JVM.

Oracle has an interesting article about the Singleton Design Pattern: Effective Ways to Implement and Use the Singleton Design Pattern Background: Wikipedia: Singleton Design Pattern

http://course.pluralsight.com/camp/trailblazer/ Pluralsight has 36 courses available for free during its trailblazer event. If you have the time, I would encourage you to try out this offer and take 2 excellent Java courses: Understanding Java VM memory management This memory management courses offers a detailed refresher into the Garbage Collector, and covers some useful tools and techniques. The section on reference classes is particularly interesting, I had never heard of WeakReferences before. Java Testing Introduction This Java testing course is fantastic. I highly recommend it to every Java developer.  They have flagged it as beginner level in this event, and it is short, but it is highly technical and useful. I've never seen a better introduction to unit testing. Happy course watching.

I've been thinking a lot about the "it works on my machine" issue. We seem to build up and take care of our development environments or virtual machines (VMs). They have a state, mostly a non-deterministic state after being maintained for so long. The idea of spinning up an environment just to test some code would have been infeasible until recently. I do enjoy using VirtualBox , I've been using it for years. I didn't know that it could be used to automate the deployment of virtual machines. We have developers and devops in the office looking into Docker for this task, but I'm quite comfortable with virtualisation and I thought that I would see if I could use virtualbox (or KVM) for this. I discovered that Vagrant is a wonderful tool for this automated creation, provisioning and clean up of VMs for development and testing. I've only used Vagrant for 1 week, but I'm enjoying it so far. My PC at work is fairly old and slow, but even so, I can s...

With Oracle JDK 7, I see the usual VM options for 32 or 64-bit and -server to specify the server class JVM. With OpenJDK 7, I found it interesting to see quite a few more JVM options: Wikipedia: List of Java virtual machines Wikipedia: JamVM

Charles Oliver Nutter - Fast as C: How to write really terrible Java In this talk, we’ll explore the main reasons why Java code rarely runs as fast as C or C++ and how you can write really bad Java code that the JVM will do a better job of optimizing. We’ll take some popular microbenchmarks and burn them to the ground, monitoring JIT logs and assembly dumps along the way. vimeo Java talk video

Java 9’s new garbage collector: What’s changing? What’s staying?

Red Hat takes the reins of OpenJDK 7 https://en.wikipedia.org/wiki/OpenJDK http://openjdk.java.net/

At work, a couple of long time experience Java devs were having build issues. They didn't know where their build system was pulling in a class from. They didn't know that the JVM has a verbose class loading option. If you run java -h, you will see this in the output:     -verbose:[class|gc|jni]                  enable verbose output If you invoke your JVM like this: java -verbose:class myHelloWorld then the output will be very verbose as the class loader prints out detailed of all the classes loaded during startup and during the finding and running of your class. e.g. [Loaded java.net.URLConnection from /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/rt.jar] [Loaded sun.net.www.URLConnection from /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/rt.jar] [Loaded sun.net.www.protocol.file.FileURLConnection from /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/rt.jar] [Loaded sun.net.www.MessageHeader from /usr/lib/jvm/j...

Ultimate Guide for Java Logging

Interview and Book Review: Java in a Nutshell, 6th Edition

JDK8 Massive Open and Online Course: Lambdas and Streams Introduction Duration: 3 Weeks Java SE 8 (JDK 8) introduced a fundamentally new way of programming in Java with the introduction of Lambda expressions. JDK8 Massive Open and Online Course: Lambdas and Streams Introduction

It can be helpful to consider the Java Memory Model when thinking about multithreading. It is being refreshed for Java 9: The OpenJDK Revised Java Memory Model JSR 133 https://jcp.org/en/jsr/detail?id=133 JSR 133 Cookbook Wikipedia: Java memory model

http://www.javadeathmatch.com/

An interesting looking new JSF framework: "Welcome to ButterFaces, a lightweight and modern JSF framework that combines the advantages from Bootstrap, jQuery and HTML 5 to develop fast, easy and modern web applications using JSF 2." ButterFaces a smart JSF framework

Unfinished business: Java is a 20-year-old grown-up with bright prospects ahead

InfoWorld has a great article reflecting on the importance of Java: InfoWorld: Java at 20: How it changed programming forever

http://oracle.com.edgesuite.net/timeline/java/

It's amazing to hear that Java is 20 years old already. If you used it and took a break and now want to get back into Java again, the following link could help as a learning refresher: JavaWorld: Learn Java from the ground up Java 20th anniversary #Java20 Update Your Skills for the 20 Years of Java

Java has evolved a lot over 20 years, the latest Java 8 is another large evolution of the JVM and the language. Java Source says that it's time to update your Java skills :-) Update Your Skills for the 20 Years of Java

This blog post details how to obtain slides from 2 NetBeans days: Where are the slides from the NetBeans Days? There is still time to go to the UK NetBeans day in May. http://www.eventbrite.com/e/netbeans-day-uk-tickets-16274993945 The agenda has been posted and it all seems really cool.

An interesting article about wisdom and experience JavaWorld:  7 timeless lessons of programming ‘graybeards’

A new alternative to JNI/JNA? Project Panama: Interconnecting JVM and native code

The excellent Java tutorials blog has an interesting post about Java 9 Welcome to Jigsaw and JDK 9

An upcoming Virtual Technology Summit (VTS) about functional programming with Java: Think Functional With Java 8

#102030: Celebrating 20 Years of Java by Running 20 10K in 30 Days

A couple of videos about how you could contribute to the Java platform. Talks about the JCP and OpenJDK: How to Contribute to the Java Platform

JDK 8u45, 7u79 and 7u80 Released! JDK 7u80 Release Notes " Also, please note this release will be the last Oracle JDK 7 publicly available update"

Jenkins says goodbye to Java 6

Quite a few websites and blogs were discussing the Oracle public end of life announcement for Java 7, which seems too soon to me, but it has been out for a long time. At work we use a mix of Java 6 and 7 but force everything to compile at Java 6 level because clients are reluctant to upgrade JDKs. Oracle Java SE Support Roadmap So moving to the interesting Java 8, which if possible for your environment, offers many new features, it is possibly the largest update to the JDK/JVM since Java 5? If stuck on Java 6 or 7, then maybe look into the OpenJDK options: Zulu®: Multi-platform Certified OpenJDK™ http://www.azulsystems.com/products/zulu

First session: How is Java/JVM built? Second session: What's coming in Java.Next? Two Live Streaming Java Sessions from vJUG

Enterprise Nashorn Combining Nashorn Scripting with JavaFX New book: "Web Development with Java and JSF"

Pragmatic Unit Testing in Java 8 with JUnit

infoq: Using a Graph Database for JVM Heap Analysis

Java is pass by value, dammit! stackoverflow: Is Java “pass-by-reference” or “pass-by-value”?

infoq: Peter Lawrey Describes Petabyte JVMs

Now in print: The Nature of Software Development Amazon.co.uk links: Wrox Press: Beginning Java Programming: The Object Oriented Approach OCP Java SE 7 Programmer II Certification Guide: Prepare for the 1ZO-804 exam Hello, Android: Introducing Google's Mobile Development Platform 4th Edition Java EE 7: The Big Picture

The Eclipse Developer’s guide to Clean Code (part 1) The Eclipse Developer’s guide to Clean Code (part 2)

Overview of WebLogic Distributed JMS: http://youtu.be/HAKixK_wp0Q

The following link is an interesting set of links about Java EE 7 and Netbeans 8.0. It's a VTS (Virtual Technology Summt) and looks very interesting: Building a 3-tiered Application with Java EE Enterprises are a bit slow moving to the latest versions of both Java SE & Java EE. Here's a reminder about Java EE 6: Introducing the Java EE 6 Platform, Part 1 http://alexander.holbreich.org/2011/01/javaee5-vs-javaee6/

Advice on removing javac lint warnings

Java 8: No more loops Oracle: What's new in JDK 8 5 features in Java 8 that will change how you code PluralSight course: What's new in Java 8

Java Tutorials Sixth Edition Book Released!

8 great things