Robert

Java 101: Learn Java from the ground up

April 18, 2019 Robert JavaWorld

See the original posting on JavaWorld

So, you want to program in Java? That’s great, and you’ve come to the right place. The Java 101 series provides a self-guided introduction to Java programming, starting with the basics and covering all the core concepts you need to know to become a productive Java developer. This series is technical, with plenty of code examples to help you grasp the concepts as we go along. I will assume that you already have some programming experience, just not in Java.

This first article introduces the Java platform and explains the difference between its three editions: Java SE, Java EE, and Java ME. You’ll also learn about the role of the Java virtual machine (JVM) in deploying Java applications. I’ll help you set up a Java Development Kit (JDK) on your system so that you can develop and run Java programs, and I’ll get you started with the architecture of a typical Java application. Finally, you’ll learn how to compile and run a simple Java app.

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Heres A Tesla Coil You Can Wear

April 18, 2019 Robert Hackaday

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It’s badgelife season, and if you need an idea for a killer piece of wearable electronics, look no further than this PCB Tesla coil. Yes, it’s killer, doubly so if you’re wearing a pacemaker.

This project was inspired by an earlier Tesla coil on a PCB project that used 160 …read more

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Super Smash Bros. Ultimates stage builder unleashes the internets creativity

April 18, 2019 Robert The Verge

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Super Smash Bros. Ultimate got a surprise update yesterday, which included a stage builder mode, a video editing feature, and the DLC character Joker from Persona 5. For the most part, users have taken to the stage builder mode to design elaborate, creative stages. But as anyone who has ever spent one nanosecond on the internet knows, given the creative power, humanity will always default to drawing dicks.

This isnt the first time Nintendos introduced a stage builder function in its games (Super Mario Maker, for example, lets you share your stages online), so the company has a basic idea of what to expect. But despite some light moderation efforts, the dicks are still busting through the detectors.

ok I get it the detection is…

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The Mueller report, thumbnailed for redaction appreciation

April 18, 2019 Robert Boing Boing

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From FlowingData, this is the redacted Mueller report in a “thumbnailed view for a sense of the redactions.”

There’s still plenty to read between the (black) lines.

(Thanks, Ted Weinstein!) Read the rest

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Teardown: The Guts of a Digital Sentry

April 18, 2019 Robert Hackaday

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I have a home alarm system that has me wondering if I can make it better with my maker Kung-fu. Recently we had to replace our system, so I took the time to dissect the main controller, the remote sensors, and all the bits that make a home security system …read more

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10 new science fiction and fantasy books to check out in late April

April 18, 2019 Robert The Verge

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Over the last couple of years, Ive interviewed Adam Savage a few times about making things, his love of space suits, and what he carries around in his bag. Hes a frequent speaker on all of those things, and I was a little surprised that hes never written a book until now. In May, hes publishing Every Tools A Hammer: Life is What You Make It, which bounces between a personal memoir and treatise on the maker movement and creativity.

I recently picked up his book on a trip, and I blew through it. Im a maker and cosplayer, and I felt as though every page spoke to me about something, whether its thinking about process and planning, building costumes, or leadership in an organization. Its a book thats applicable to more than just…

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HBO is teaching respect by putting Muppets on Game of Thrones and Westworld

April 18, 2019 Robert The Verge

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As the latest season of Game of Thrones has shown, Westeros is at war. The divide between factions has stretched the Seven Kingdoms to the breaking point, and it seems that theres only one hope for peace. Not Daenerys Targaryen and her dragons, or Jon Snow and his overdeveloped sense of righteousness. No, as HBOs latest promotion shows, only Elmo, from House Sesame Street, can save the realm now.

Elmo thinks that you two need to respect each other, says Elmo, bursting into a tense negotiation between Tyrion and Cersei Lannister. When Elmo has a problem with his friends like Abby or Cookie Monster, Elmo doesnt get upset. Elmo listens and learns from what they have to say. But instead of getting carved up into fuzzy red bits by the…

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Getting Started With Javalin

April 18, 2019 Robert DZone Python

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With the popularity of Spring Boot and the great support for integrating with different types of frameworks, its often hard to imagine using something different than Spring. However, there are numerous frameworks out there which provide similar features for building applications like microservices, and Javalin is one of those frameworks. This post will help you to get started with Javalin.

What Is Javalin?

Javalin is a web framework for building Java and Kotlin web applications in a similar fashion to frameworks like Node.js (see Koajs.com) or SparkJava, which is not surprising, since the author is one of the original SparkJava authors.

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Mastering Java persistence with JPA and Hibernate, Part 1: Entities and relationships

April 18, 2019 Robert JavaWorld

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The Java Persistence API (JPA) is a Java specification that bridges the gap between relational databases and object-oriented programming. This two-part tutorial introduces JPA and explains how Java objects are modeled as JPA entities, how entity relationships are defined, and how to use JPA’s EntityManager with the Repository pattern in your Java applications.

Note that this tutorial uses Hibernate as the JPA provider. Most concepts can be extend to other Java persistence frameworks.

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Red Hat to maintain OpenJDK 8 and OpenJDK 11

April 18, 2019 Robert JavaWorld

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Red Hat is taking over maintenance responsibilities for OpenJDK 8 and OpenJDK 11 from Oracle. Red Hat will now oversee bug fixes and security patches for the two older releases, which serve as the basis for two long-term support releases of Java.

Red Hats updates will feed into releases of Java from Oracle, Red Hat, and other providers. Oracle released JDK (Java Development Kit) 8, based on OpenJDK 8, in March 2014 while JDK 11, based on OpenJDK 11, arrived in September 2018. Previously, Red Hat led the OpenJDK 6 and OpenJDK 7 projects. Red Hat is not taking over OpenJDK 9 or OpenJDK 10, which were short-term releases with a six-month support window.

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Whats new in Microsoft Visual Studio Code

April 18, 2019 Robert JavaWorld

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Microsofts open source development tool is an important piece of the developers toolkit. Built using GitHubs cross-platform Electron framework, Visual Studio Code is a full-featured development editor that supports a wide selection of languages and platforms, from the familiar C and C# to modern environments and languages like Go and Node.js, with parity between Windows, MacOS, and Linux releases.

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Making a Dash Button Update Your To-do List

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Amazon’s Dash Buttons are useful little devices, that let you automatically order a wide variety of common household goods at the press of a button. They’re cheap and wireless and readily available, and that makes them ripe for hacking. In just this vein, [Inbar] and [Ezra] found a way to …read more

Typing games are having a moment

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<em>Nanotale</em>.

The typing game genre was born of necessity. These games were designed to teach a new generation of computer users how to type on a keyboard. Software Toolworks Mavis Beacon Teaches Typing! and Segas Typing of the Dead, released in 1987 and 1999, respectively, used the novelty of the keyboard as a game mechanic to keep people playing, despite the rote mechanics necessary in learning. Though Typing of the Dead may not have been installed on the rows of machines in your middle school computer lab, Mavis Beacon Teaches Typing certainly was. There were others, too, like Knowledge Adventures JumpStart Typing and PopCap Games Typer Shark, among many more.

Keyboarding was a new skill and computers were driving home the need for everybody…

Heres what its like when Game of Thrones Jason Momoa slaps you into the hospital

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Today, HBO launched a new series of animated shorts called Backstories that illustrate personal stories from behind the scenes of its shows Game of Thrones, Barry, and Insecure. The first of them, from a story told by Game of Thrones showrunners David Benioff and D.B. Weiss, is pretty wild. Its about how actor Jason Momoa, who played Khal Drogo on the show and went on to star as Aquaman in the DC Universe films, put Benioff in the hospital by playing the slap game.

In the video, Benioff explains his logic for taking on a notoriously strong man-mountain in a physical contest of pain: Im going to challenge the Khal because if I beat the Khal, Im the Khal. (Heavy drinking was apparently also involved, if animators Ivan Dixon and…

Samsung breaks out the Galaxy S10s Bright Night feature into a dedicated night mode

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Samsung is turning the Galaxy S10s Bright Night camera feature, which allows the S10 to automatically activate a night mode for low-light shots, into its own dedicated night mode. Users will be able to manually use it whenever theyd like, instead of relying on the algorithm to choose for them (as reported by SamMobile).

Once the update fully rolls out (currently, it only seems to be available in Switzerland), users will get a new night mode option for the camera. The mode can be activated by swiping, similar to other camera modes like the Panorama or Instagram modes that are built into Samsungs camera app.

The lack of a manual night mode was one of the more confusing parts of the S10. As my colleague Natt Garun noted in her review,…

How to use Adobe Acrobat Pros character recognition to make a searchable PDF

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If youve ever downloaded a scanned document, you know the frustration that comes with trying to search for specific words and phrases. If you want to quickly find text to read through say, a certain explosive report that was just released as an unsearchable PDF you can use Adobe Acrobat Pros optical character recognition to convert scanned documents into fully editable PDFs with searchable text.

Just open up your PDF in Adobe Acrobat, and click on the Edit PDF tool on the right-side menu. Depending on how big your file is, it might take a few minutes to fully convert the file. Once its done, you can hit Ctrl+F to search through the text. When youre ready to export, you can go to File > Save As to save your new editable…

Google Home adds support for YouTube Musics free ad-supported tier

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Google Home smart speakers can now play music from YouTube Musics free ad-supported tier. Previously, in order to listen to YouTube music on your Google Assistant smart speaker youd have to subscribe to Googles paid YouTube Music Premium service for $9.99 a month. The new service is available now on the Google Home speaker and other Google Assistant smart speakers in 16 countries including the US, UK, and Australia.

Unfortunately, the free tier doesnt let you request specific songs from the smart speaker. Instead its meant for playlists like Latin Vibes. When we asked Google to specifically play Creep by Radiohead, our smart speaker played what it thought was a related Nirvana song rather than the Radiohead track wed requested……

Daily Crunch: Samsung responds to Galaxy Fold concerns

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The Daily Crunch is TechCrunch’s roundup of our biggest and most important stories. If you’d like to get this delivered to your inbox every day at around 9am Pacific, you can subscribe here. 1. Samsung responds to reviewer complaints about its Galaxy Fold phone Samsung has issued a statement about its new folding phone. Apparently […]

Nvidia launches its Isaac SDK to help democratize AI-powered robot development

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Today at TechCrunchs TC Sessions: Robotics + AI event at UC Berkeley, Nvidia VP of Engineering Claire Delaunay announced that the companys Isaac SDK is available for download. Announced last month, the software development kit is part of the chipmakers ongoing push to help make robotics development more accessible for a wider range of users. […]

Ingenious DIY Etch-A-Sketch digital camera

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Martin Fitzpatrick built the Etch-A-Snap, a digital camera with an automated Pocket Etch-A-Sketch as its display on the back. Each photo takes between 15 minutes to one hour to be sketched. From Two Bit Arcade:

Photos are processed down to 240×144 pixel 1-bit (black & white) line drawings using Pillow and OpenCV and then translated into plotter commands by building a network graph representation with networkx. The Etch-A-Sketch wheels are driven by two 5V stepper motors mounted into a custom 3D printed frame. The Etch-A-Snap is entirely portable and powered by 4xAA batteries & 3×18650 LiPo cells.

Find links to the plans and code here: “Etch-A-Snap: The Raspberry Pi powered Etch-A-Sketch camera” (Two Bit Arcade)

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