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I would like to develop an application using push notification service (like Whatsapp). What kind of service would I have to use to manage all kinds of operating system?
I would suggest using a backend like Parse.
http://www.parse.com
It's a good starting place and supports all different types of OS's.
It stores data, provides analytical stats and also allows you to send push notifications to 1 million unique devices - without paying a penny.
Hope this helps.
Cheers
Ryann
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What is the difference between a web service hosted within your application and the one hosted over the internet? And the complexities involved in consuming both of them?
Please can somebody explain this?
Logically it doesn't matter who is hosting it. Basically this should be transparent. The only thing is that when it's hosted locally the performance (when calling it) will probably be better as the data doesn't need to travel over the Internet but just in say your local network.
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I want to make the simplest and most reliable on/off device controlled from a compuer software (Java).
I was thinking about sinus sound singnal + RC filter with relay for specific frequency, but unfortunatelly I can't use sound card - it is already occupied for different purposes.
How can I achieve this without much compatibility/reliability issues. It should work both on Unix and Windows
I mean an output device, so I want to turn on/off relay from Java software.
USB MIDI adapter and then midi to relay .
Maybe use a Raspberry Pi (includes GPIO controller). Put a web service to control the GPIO. The web service is accesable from any HTTP client.
http://learn.adafruit.com/adafruits-raspberry-pi-lesson-4-gpio-setup/
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I am new in embedded world. May be I am wrong. But I want a relevant solution.
I just want to embed java environment into a MCU for ease to develop application. The MCU vendor have provide the C library for lcd, sensor, spi, buttons, UART, DIO etc etc. Can I embed java into this ?? I mean, I want to use java on the MCU, uppon those device drivers.
Can I use or make something like this??
I have seen the simple Real-Time-Java it's very tiny.
Thank you.
Take a look at NanoVM and Bajos.
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I want to create a Java Desktop Application and want to employ some mechanism to protect my software from illegal copy. What is the general best approach to implement the serial number and activation protection for Java Application? If the user can activate the software correctly, where to store the activation info?
Thanks.
There can almost be only one answer: On your server, together with a significant part of your algorithm(s). If all the code has to be on the client, then all that could work is
Trusted computing (ultimately a hardware barrier)
Steganography (obfuscating, scattering, hiding, deceiving, ...)
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Just like google as the number GOOGL (46645), I would like to also set up a server like this that will have the ability to receive text messages.
Here is a nice tutorial showing how to receive SMS using a PC (or the full SMS tutorial here).
Remember that this is Telco territory, so make sure you have capital to grease their pockets. And know that everything you do will be made as difficult as possible, further inhibited by proprietary protocols.
While Twilio doesn't yet support shortcodes, you can be up and running accepting text messages using simple POST requests sent to your server very quickly. There are other similar services out there as well so look around and use the one you like the most.
[Full disclosure: I work for Twilio]