Tuesday Nov 24, 2015

Online Java Hands-On

Oracle Technology Network invites you to watch the replay of technical sessions and hands-on labs from the last Virtual Technology Summits.  Learn from Java specialists including Java Champions and Oracle engineers about the entire Java platform as well as the development tools. The sessions are accessible without registration.  The sessions available are: 

Docker for Java by Rolland Huss 
Java SE 8 application: Shakespeare plays Scrabble by Jose Paumard 
Java SE 8 date and time by Simon Ritter 
Pi on wheels, make your own robot by Michael Hoffer 
Connecting devices to the cloud: Healthcare for the elderly by Gerrit Grunwald 
Cloud enabled JavaScript stored procedures with Java 8 Nashorn by Kuassi Mensah

Take advantage of this new learning resource to help with your Java development. Visit the OTN VTS Java Replay

Thursday Nov 19, 2015

New Java Champion Lukas Eder

Congratulations to the new Java Champion: Lukas Eder! 

Lukas is the CEO of Data Geekery, a service offering open source products and APIs based on Java Object Oriented Querying (jOOQ). He has been the main contributor of the open source jOOQ project for many years. Lukas is also a consultant and a trainer on SQL and Java 8. He writes about topics related to jOOQ, SQL and Java on the blog http://blog.jooq.org

Lukas is a member of the board of the Java User Group Switzerland (JUG.ch), where he brings popular speakers to conferences in Zurich, Bern, Lucerne, and Basel. He is involved with the program committee of Voxxed Zurich and other Java conferences. Lukas has been  a speaker at many Java conferences such as Geekout, Geecon, and Devoxx for many years. Follow him at @lukaseder 

Wednesday Nov 18, 2015

Modularity in Java 9

Learn about Java 9 with four presentations from Alan Bateman and Mark Reinhold! In the 'Prepare for JDK 9' presentation, Alan describes JDK 9 changes and their implications in existing code and future development. 

In the 'Introduction to Modular Development' presentation, Alan presents the structure of a module and he compiles basic modules.  

In the 'Advanced Modular Development' presentation, Mark presents a set of principles for modular development, with examples taken from the JDK itself.

In the Project Jigsaw: Under the Hood presentation, Mark explains the difference between readability, observability, visibility, and accessibility in the Java Platform Module System. He also discusses the unnamed module, the platform's built-in class loaders and how you can load two different versions of a module at the same time

Tuesday Nov 17, 2015

Catch the Java 9 Train

“The goal of Java 9 is to increase developer productivity while retaining Java’s key values of readability, simplicity, universality and compatibility” explains Mark Reinhold. In this video, he describes the Java 9 release that will introduce modules, addressing the complexity of class path and the monolithic JDK  

Thursday Nov 12, 2015

Java ME 8 + Raspberry Pi + Sensors=IoT World

This is the fourth article about how to create an application with Raspberry Pi and Java ME 8.  Jose Cruz explains in detail how you can develop Java ME 8 classes that allow you to gather data and control these devices. It focuses on using a serial peripheral interface (SPI) bus to control an analog-to-digital converter (ADC), a ferroelectric RAM (FRAM), and an organic light-emitting diode (OLED) display. 

In Part 1 of his series on using Java ME 8 to control Internet of Things (IOT) devices--such as LEDs, relays, LCDs, sensors, motors, and switches--connected to a Raspberry Pi, Jose Cruz explains how to work with devices that use a simple general-purpose input/output (GPIO) interface. GPIO devices can be used as either a digital input or digital output, can be disabled or enabled, and can be used to drive interrupt lines. Part 1 explores how to connect and control a flame sensor, a movement sensor, and a motion sensor.

In Part 2, Cruz describes how to connect and control devices that use an inter-integrated circuit bus (I2C) interface. Then in Part 3, he demonstrated how to use universal asynchronous receiver/transmitter (UART) interfaces to connect devices that read latitude, longitude, altitude, and time from a GPS receiver engine board and provide the information via spoken voice in English and Spanish.

Tuesday Nov 10, 2015

Devoxx Highlights

The biggest Java conference in Europe, Devoxx, is taking place in Belgium this week. It offers in-depth Java content on the Java and related technologies during the five days of conference. The conference is themed:  “20 years of Java, Just The Beginning”   

Oracle is a platinum sponsor again this year. If you are at Devoxx, come by the booth to chat about Java and grab a cup of coffee. Oracle speaking slots are as follows:

Opening Keynote
Wednesday, November 11 9:30 – 10: 30 Room 4, 5, 9
Mark Reinhold, Stephan Janssen, Lawrence Krauss

Java EE 7 in Action - University/Server Side Java
Monday, November 9 13:30 – 16:30 Room 9
Reza Rahman

Modular Development with JDK 9 - University/Java SE
Tuesday, November 10 13:30 – 16:30 Room 8
Mark Reinhold, Alan Bateman

Prepare for JDK 9!, - Conference/Java SE
Wednesday, November 11 14:00 – 15:00 Room 8
Mark Reinhold, Alan Bateman

Young Pups: New Collections APIs for Java 9 - Conference/Java SE
Wednesday, November 11 15:10 – 16:10 Room 8
Stuart Marks

Introduction to Modular Development - Conference/Java SE
Wednesday, November 11 16:40 – 17:40 Room 8
Mark Reinhold, Alan Bateman

Java EE Gathering - BOF (Bird of a Feather)/Server Side Java
Wednesday, November 11 20:00 – 21:00 BOF1
David Delabassee

Advanced Modular Development - Conference/Java SE
Thursday, November 12 9:30 – 10:30 Room 5
Mark Reinhold, Alan Bateman

Java SE 8 for Java EE Developers - Conference/Server Side Java
Thursday, November 12 9:30 – 10:30 Room 8
David Delabassee, José Paumard 

Project Jigsaw: Under the Hood - Conference/Java SE
Thursday, November 12 17:50 – 18:50 Room 5
Mark Reinhold, Alex Buckley, Alan Bateman 

The Conference Bum - Ignite Sessions/Startups 
Thursday, November 12 13:50 -13:55 BOF1
Stephen Chin 

Ask the JDK Architects - Conference/Java SE
Thursday, November 12 15:10 – 16:10 Room 5
Mark Reinhold, Alan Bateman, Alex Buckley, Robert Field, Stuart Marks

Java Community Insider Secrets! - BOF (Bird of a Feather)/Java SE
Thursday, November 12 20:00 -21:00 BOF1
Stephen Chin, Yolande Poirier and Lucy Carey 

Mosaic of JavaOne Pictures

Experience JavaOne 2015 through the eyes of the conference attendees! Thousands of pictures from this year’s attendees were submitted to create this animation. Find pictures of yourself or people you know.  

Tuesday Nov 03, 2015

JDK 8u65 & 8u66 Releases

JDK 8u65 and 8u66 are now available. Java SE 8u65 includes important security fixes. Oracle strongly recommends that all Java SE 8 users upgrade to this release. Java SE 8u66 is a patch-set update, including all of 8u65 plus additional features. You can download the latest JDK releases from Java SE Downloads page.

For information on new features and bug fixes included in these releases, see the following release notes:

This release also includes JDK 8u65 for ARM. See JDK for ARM Release Notes 8 Update 65 for information about this product.

Monday Nov 02, 2015

Gosling is admiral of a fleet of robotic marine drones

By Roger Smith

Father of Java is now Liquid Robotics' chief software architect

I learned James Gosling, the creator of the Java language, is now the admiral of a fleet of water-borne drones from Mike Duigou last Thursday at the Java Hub in the JavaOne Exhibit hall. Gosling is the chief software architect for Sunnyvale-based Liquid Robotics, a 8-year-old company that uses self-propelled 7-foot-long marine robotic drones that look like surfboards to collect and transmit oceanic data for a variety of uses. Duigou told me that he was brought aboard by Gosling as Senior Software Engineer when he joined the company in 2011.

Called Wave Gliders, the drone are powered by wave energy, with the constant up-and-down motion providing energy that pulls the robots through the ocean. Duigou gave me a hand-on tour of the USS Gosling, a test Wave Glider on display in the Hub. He explained the Wave Glider is made of two parts: the surfboard-sized float that stays on the surface; and the sub that has wings and hangs 3-9 meters below the float on an umbilical tether. Because of the separation, the float experiences more wave motion than the sub. This difference allows wave energy to be harvested to for propulsion.

Exploded view of Wave Glider marine drone (source: Liquid Rocket)

The Wave Glider is equipped with several computers for navigation and payload control, satellite communication systems, and ocean sensors that do things like measure weather, sea conditions, water quality and chemistry, animal life and water currents. Acoustic microphones and arrays on the Wave Glider have also been use to record passing ships and the vocalizations of whales and other mammals (an early use case of the company's technology).

The power needed to operate the sensors and computers is provided by solar panels, which are used to recharge lithium-ion batteries. Individual Wave Glider can be programmed for autonomous operation, or it can be steered by a remote pilot over the Internet. Continuous, near real time, communication is provided via satellite, cellular phone or radio links for piloting and data transmission.

All the Wave Glider computing power is Linux- and Java-based and includes a Hadoop cluster on the backend used to analyze the large data sets the devices collect, either individually or in groups. Duigou explained that the Wave Gliders can also be programmed to operate as a drone swarm. "For example, you can set up a fence around a marine protected area like Monterey Bay and give them all the goal of defending the border and reporting intruders. The robots can figure out who goes where."

A diver swims with a Wave Glider SV2 during operations in Hawaii (source: Liquid Rocket).

Find out more about Liquid Robotics here: http://liquidr.com/index.html

Thursday Oct 29, 2015

What’s Inside Oracle Cloud for You

By Roger Smith

Cloud Services for Developers

“Time is the greatest savings that you get from moving your development environment to the cloud,” said Oracle’s Bruno Borges, in his JavaOne presentation “Cloud Services for Developers: What’s Inside Oracle Cloud for You?” “If you have had to set up an on-premise Oracle database, or any other database, you know that it takes time to do that and you always ask yourself ‘Is these production-ready?’”

In his fast-paced, hands-on demo, Borges showed how developers can quickly get up to speed using Oracle’s pooled, shared, and elastically scalable software development platform, which gives organizations the ability to develop new applications in a quick and cost-effective way. He explained how developers can use their favorite IDE (Oracle JDeveloper, Eclipse, NetBeans) and build systems like Maven and Gradle to develop and deploy applications to the cloud.

Target different JDK Versions

Developers also have the option of choosing either Java SE 7 or 8 to leverage the particular language and JVM features their applications need. Since Oracle Java Cloud is an open platform, developers can also use any available open source or commercial Java library or framework in their applications.

Database Integration

Borges next walked through how to connect to Oracle Database Cloud Service to persist and manage application data as well as how to use Oracle Messaging Service to message between Java Cloud applications, on-premises applications, and Java EE and Node.js applications deployed in the Oracle Cloud. He then demonstrated how you can profile Java applications using Java SE Mission Control and Flight Recorder, in addition to the Oracle Application Performance Monitoring Cloud Service.

He also announced a new Docker Container Service that will soon be available from Oracle to help developers deploy applications into Docker containers.

In response to an audience question about Oracle Cloud scalability, Borges said that you can choose to run your application on your choice of compute size (i.e. the number of cores), and it will scale out dynamically on demand. He said they were also working on giving developers the capability to add scale programmatically using business logic, for example, in an e-commerce application that needs to scale up during the holiday season.


Insider News from the Java Team at Oracle!



« November 2015