Category Archives: workday

Computer Browser Service and randomly lost connection

I was having once a while connection problem with two computers, both with Windows 7 operating system. I found possible explanation and solution, maybe: Windows 7 itself, or more precise Computer Browser Service. Detail description is in excellent article Wireless … Continue reading

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Virtual Computer

Performance of nowadays personal computers is more, than one would expect. They can even run two or more computers in the same time, actually virtual computers, which can share resources of real physical computer. For users of Windows there are … Continue reading

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Java executable jar file

Once a while is needed java executable jar file using java jar tool. Here is an example of the batch file, let’s say makejar.bat, which can create executable jar file. Expects package name examples. The first parameter is package subdirectory, … Continue reading

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Skype from command line

Once a while is handy to be able use Skype from somebody else computer. In this case one can copy Skype and personal data (contact list) to USB flash drive. Here is what could be done. This example is using … Continue reading

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Why is the letter “x” the unknown?

Answer can be found at TED speech by Terry Moore, executive director at the Radius Foundation. When Arabic texts made their way to Spain in the 11th century, Europe wanted to translate this mathematical wisdom of the East into a written, Western language. Attempts … Continue reading

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Hinge tracker

For taking picture of the sky is mount of the camera maybe more important, than camera itself. For long exposure, for sure. Cheap and portable solution could be hinge mount or hing tracker. Several of such mounts are at Gary Seronik website. … Continue reading

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Solar system simulated in Java applet

Nice applet showing Solar system at  http://weelookang.blogspot.com/2011/06/ejs-open-source-kepler-3rd-law-system.html   There are links to more interesting applet of virtual astronomy and physics.

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Swing is not thread safe

Java Swing is not thread safe, and here are some related resources. Swing’s threading policy from package description Java SE Desktop Articles and tutorial Creating GUI SwingUtilities methods invokeAndWait and invokeLater in an example at Java Revisited blog Building thread safe GUIs at Java Developers Journal resource CD vol 6 issue … Continue reading

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REST

Representational State Transfer (REST) is an architectural style for creating, maintaining, retrieving, and deleting resources. REST’s information-driven, resource-oriented approach to building Web services can both satisfy your software’s users and make your life as a developer easier. Web services that allow … Continue reading

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Work time tracking

Do you have hard time to track time spent on various projects and work activities? There is an option to use open source tool Inspectime. Implented as an Java server application can be deployed on server like Tomcat, Glassfish, etc, also … Continue reading

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