All posts by Jorge

Turn off only one of many monitors

Two MonitorsIf you have more than one monitor, you probably might to turn off one of them if it’s simply unnecesary. It’s likely that you simply turn off the monitor pushing the power button, but your computer always put a window, tool, rule or message in the turned off monitor because it don’t have a way to know whether the monitor is off. You surely don’t want to turn off and turn on again or plug in and unplug frequently your data cable to prevent this behavior (it isn’t recommendable).
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Remotely Control Your Ubuntu PC from an Android Device

icon_300We can use our Android device (wherever they are) to connect and control your Ubuntu PC as a TV Remote and even more.

Imagine you want to turning down the noisy music but you are in another room of your house, or you left your PC turning on and your wife said to you: “Turn off the PC whether you aren’t using it and even worse you’re resting, cold or trying to sleep”.
Maybe your forget to ran something or cancel something in your PC.

That do you think if you can do this activities just using your android device wherever you are?.
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CuaimaCrypt, a Strong Cryptographic Alternative

cuaimaCryptI think CuaimaCrypt is one of best cypher ever designed because it have such a strong algorithm that can resist an quantum computer attacks.

For this reason, I’m currently working to supporting this project; consequently, I share this link with you in order to explain what I’m refer to.

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Go to Bolivartech article: CuaimaCrypt, a Strong Cryptographic Alternative

Jorge Fernandes is Bachelor in Computer Science experienced in telecommunications, security, banking and programmer since 1984. He works in BolivarTech focused on high-level decisions about scientific and technological policies and strategies of projects oriented to develop web and standalone applications, as well as smart solutions at mobiles. He always oriented to produce innovator products.
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java.lang.OutOfMemoryError and X options

memoryOne common indication of a memory leak is the java.lang.OutOfMemoryError exception. Usually, this error is thrown when there is insufficient space to allocate an object in the Java heap and the garbage collector cannot make space to accommodate a new object, and the heap cannot be expanded further. Also, this error may be thrown when there is insufficient native memory to support the loading of a Java class.
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NSA Director says “Encryption is foundational to the future”

mike-rogersSpeaking to the Atlantic Council, a Washington, D.C., National Security Agency (NSA) Director Adm. Mike Rogers stressed that the cybersecurity battles the U.S. is destined to fight call for more widespread use of encryption, not less. “What you saw at OPM, you’re going to see a whole lot more of,” he said, referring to the massive hack of the Office of Personnel Management involving the personal data about 20 million people who have gotten background checks.

Watch Rogers’ talk here…

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Credit Card numbers or IMEI in Java (Luhn Algorithm)

Hans Peter LuhnSome people ask me about how banks or online retailer know when their credit card number is wrong without a regular request or how their mobile services provider or mobile apps know their smartphone or tablet identification(IMEI) are invalid due to initial system configuration manipulation.

What if I tell you the similarity between this identifications and the java code behind the scene?

It sounds really cool, yeah?

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