Must-Have Java GUI Skills

Must-Have Java bedienoberflche SkillsMust-Have Java GUI SkillsJava GUI is used to write programs that range from applets to stand-alone applications. Unlike traditional programs, GUI programs are event-driven. A user clicks a button or presses a key for something to happen the program responds to the click or the press or whatever else generates the event.Java is one of the primary languages for developing native Android apps and back-ends for enterprise software. So adding new Java skills is a surefire way to make yourself more marketable. These five Java GUI tutorials can help get you there1. Brush up on Java SwingJava Swing is an additional set of program components that work with the prewritten code called Java Foundation Classes. By using JFC and Swing, a programmer can write programs in an operating system other than Windows. You can create GUIs for applications and applets using JFC and Swing.2. Incorporate JavaFXA separate tutorial from Oracle gives instructions on how to inc orporate JavaFX into a Swing application. Java programmers use the JavaFX software platform to create and deliver rich Internet applications that run on a variety of devices.Calculate a java developer salary in your area with our Salary Calculator.3. Check out a free programming tutorialLandofcode.com provides free tutorials on web development, including tutorials on Java GUI programming, layout, graphics, responding to events, and displaying applets on websites.4. Go deepThe Udemy course Java Swing (GUI) Programming From Beginner to Expert, which you can preview for free, is a bargain at $49. Its taught by former software developer and contractor John Purcell and runs the gamut, like the title says.Purcell also runs the website Cave of Programming, where many more programming tutorials are stashed - many of them free.5. Look to the old favoritesIt may sound strange, but dont overlook YouTube as a resource. A cursory search turns up Java GUI tutorials on a number of topics, among t hem NetBeans and Eclipse.Your Java GUI skills can be enhanced, learned anew or taken to the next level with the help of ansprechbar tutorials. So, poke around within the tutorials and devote yourself to the one you like best. Your bottom line will thank you, as your Java GUI know-how likely will be in demand with many employers.

Inspector Drone

Inspector Drone Inspector Drone Inspector DroneDrones arent just for snooping, spying, stealth attacks from above, and pranks anymora. The oft-maligned technology is now in the business of saving lives, by going where humans cant go without taking on considerable risk. Industrial inspection is the niche that screams out for remotely operated aerial vehicles, as they are sometimes known. Jobs that once required people dangling from ropes, or atop precarious scaffolding, are now about as risky as playing a video game. In the UK the largest number of industrial fatalities comes from falls from heights, says Phil Buchan, a mechanical engineer and the commercial director of Cyberhawk, Aerial Inspection and Surveying Specialists. Our technique is reducing the need for people to work at height. That technique involves more than sending up a GoPro on a quadrocopter controlled by an early-adopting technophile. Cyberhawk uses two highly skilled employees for every job. One is a trained drone p ilot, the other a trained engineer. While the pilot controls the vehicle, the engineer controls the camera. The engineering half of the duo may have once been an inspector or may have been trained by Cyberhawk after graduating. Pilots might be hobbyists or may come from a military background. At Cyberhawk they go through four levels of training, with only level-four pilots sent out to inspect assets in complex harsh environments such as offshore oil platforms.Inspecting an offshore rig. Image Cyberhawk The cameras Cyberhawk use can look straight up and straight down, giving them an unrestricted view of whatever might need inspecting. We can fly under the deck of an oil platform and turn the camera and look directly up to inspect the underneath of the deck, says Buchan. Traditionally thats an area difficult to inspect, difficult to have access to. But these ogling RC aircraft do more than just reduce the need for dangling humans and associated risks. They can save industries serious money. For example, until now, checking a flare stack meant shutting down production. A flare stack typically has a large flame coming out of it, so you cant send someone up there to inspect it, says Buchan. We can do our inspection while the flare is online, and now we can do it every six months to monitor degradation. One supermajor oil and gas company said they saved $11 million by not having to shut down during such an inspection in Nigeria, thanks to a Cyberhawk team. After some 10,000 safe commercial flights in 20-odd countries, Cyberhawk has shown the world that drones are good business for cutting risk. In the U.S., though, regulations make that business a little more complicated. Ventus Wind had to ground their inspectors when the FAA outlawed all commercial drones. We were operating for about two and a half years without any problem, says Marco Zvanik, the companys CEO. It put us out of business. To get back in business, the company had to jump through a fair number of hoo ps. They had to apply for (and received) a section 333 exemption from the FAA all their pilots now have to be licensed pilots a spotter must accompany all the pilots for all flights the drones cannot fly out of the line of sight at any time and all drone flights have to be registered with air traffic control, days in advance. But however onerous these requirements might be, it does raise the bar for entry into the business, eliminating potential amateur competition. Whatever time and money the bureaucratic process might cost, Ventus Wind is still able to offer incredible savings to those in need of a thorough examination at a high altitude. Their cost for a single turbine inspection ($1,700) is a mere 15 percent of what it would cost to inspect in any other fashion. The price is likely to go downand efficiency upas drone technology improves. With current battery technology the drones cant stay up longer than 15 minutes. Ventus has recently put sensors on their drones to detect leaki ng methane, but any addition to the drone sucks up a huge percentage of a drones hauling capacity. There is a lot of hardware that works on the back of a truck but is impossible to use on a drone, says Zvanik. Advancements are needed on the software side of things too. You can capture all the great videos and infrared you want, but you have to be able covert that to a usable format and generate a report the asset owner can actually do something with, he says. However much room there may be for improvement, the drone inspection business is already saving money and saving skins. Just the other day I watched a helicopter dangling a man a 100 feet below, going from transmission tower to transmission tower looking at components, says Zvanik. Its like, ok, you can do that with a human, but you can do it a lot faster and with plenty less money using a drone. Michael Abrams is an independent writer. For Further Discussion A flare stack typically has a large flame coming out of it, so you c ant send someone up there to inspect it. We can do our inspection while the flare is online, and now we can do it every six months.Phil Buchan, commercial director, Cyberhawk

4 Benefits of Object-Oriented Programming

4 Benefits of Object-Oriented Programming4 Benefits of Object-Oriented ProgrammingLike parachute pants and Pac-Man, OOP (object-oriented programming) got its start in the 1980s. But unlike trendy fashions and video game characters, this programming model is still going strong after these many years.OOP has become a fundamental part of software development. Thanks to the ubiquity of languages like Java and C++, you cant develop software for mobile unless you understand the object-oriented approach. The same goes for serious web development, given the popularity of OOP languages like Python, PHP and Ruby.Getting your head around the idea of object-oriented programming can be challenging for some IT professionals. You may be wondering why you even need objects when you could use the top-down approach of traditional structured programming in languages like Visual Basic.If youve written this kind of software, youre probably used to breaking down large problems into sub-problems and solvin g them in separate units of code. Or you may have experience with functional programming, which treats elements of code as precise mathematical functions, and prevents them from affecting other elements, i.e., no side effects.Get to grips with OOP, however, and youll see that its a whole new way of solving problems. The basic concept is that instead of writing a program, you create a class, which is a kind of template containing variables and functions. Objects are self-contained instances of that class, and you can get them to interact in fun and exciting ways.The advantages of object-oriented programming lie in this kind of encapsulation. Heres a detailed look at some of OOPs top benefits1. Modularity for easier troubleshootingSomething has gone wrong, and you have no idea where to look. Is the problem in the Widget file, or is it the WhaleFlumper? Will you have to trudge through that sewage.c file? Hope you commented your codeWhen working with object-oriented programming language s, you know exactly where to look. Oh, the car object broke down? The problem must be in the Car class You dont have to muck through anything else.Thats the beauty of encapsulation. Objects are self-contained, and each bit of functionality does its own thing while leaving the other bits alone. Also, this modality allows an IT team to work on multiple objects simultaneously while minimizing the chance that one person might duplicate someone elses functionality.We can help you find your next programming jobSEARCH JOBS2. Reuse of code through inheritanceSuppose that in addition to your Car object, one colleague needs a RaceCar object, and another needs a Limousine object. Everyone builds their objects separately but discover commonalities between them. In fact, each object is really just a different kind of Car. This is where the inheritance technique saves time Create one generic class (Car), and then define the subclasses (RaceCar and Limousine) that are to inherit the generic classs traits.Of course, Limousine and RaceCar still have their unique attributes and functions. If the RaceCar object needs a method to fireAfterBurners and the Limousine object requires a Chauffeur, each class could implement separate functions just for itself. However, because both classes inherit key aspects from the Car class, for example the drive or fillUpGas methods, your inheriting classes can simply reuse existing code instead of writing these functions all over again.What if you want to make a change to all Car objects, regardless of type? This is another advantage of the OO approach. Simply make a change to your Car class, and all car objects will simply inherit the new code.3. Flexibility through polymorphismRiffing on this example, you now need just a few drivers, or functions, like driveCar, driveRaceCar and DriveLimousine. RaceCarDrivers share some traits with LimousineDrivers, but other things, like RaceHelmets and BeverageSponsorships, are unique.This is where object-ori ented programmings sweet polymorphism comes into play. Because a single function can shape-shift to adapt to whichever class its in, you could create one function in the parent Car class called drive - not driveCar or driveRaceCar, but just drive. This one function would work with the RaceCarDriver, LimousineDriver, etc. In fact, you could even have raceCar.drive(myRaceCarDriver) or limo.drive(myChauffeur).4. Effective problem solvingA language like C has an amazing legacy in programming history, but writing software in a top-down language is like playing Jenga while wearing mittens. The more complex it gets, the greater the chance it will collapse. Meanwhile, writing a functional-style program in a language like Haskell or ML can be a chore.Object-oriented programming is often the most natural and pragmatic approach, once you get the hang of it. OOP languages allows you to break down your software into bite-sized problems that you then can solve - one object at a time.This isnt t o say that OOP is the One True Way. However, the advantages of object-oriented programming are many. When you need to solve complex programming challenges and want to add code tools to your skill set, OOP is your friend - and has much greater longevity and utility than Pac-Man or parachute pants. Tags