Can you write an iPhone app that talks directly to Atmos? Yes you can.

Can that app be written in Java? No as the iPhone doesnt support Java.

Steve Jobs has been quoted as saying "Java's not worth building in. Nobody uses Java anymore. It's this big heavyweight ball and chain."

As Darren pointed out, no, you can't write Java apps for iPhone.  For iPhone, you need to learn Objective-C, a language that is somewhere between C, C++, and Smalltalk.

http://developer.apple.com/library/ios/#referencelibrary/GettingStarted/Learning_Objective-C_A_Primer/_index.html

You can purchase the iOS SDK from Apple for $99:

http://developer.apple.com/programs/ios/

And download the Atmos iOS SDK to connect you to our web services:

http://code.google.com/p/atmos-ios/

Also note that you'll need to purchase a Mac.  Apple only supports iPhone development on OS X.

There is also one other option that I've never tried: Adobe flash builder 4.5 supports packaging apps for mobile devices including iPhone: http://www.adobe.com/devnet/air/articles/packaging-air-apps-ios.html

If you go the Flash route, you can use our SDK for Flex/Flash:

http://code.google.com/p/atmos-flex/

Hope this helps,

Jason

Is it possible to develop a Android app using Spring Source and hosting it on Atmos to create a cloud environment?

Is it possible to develop a Android app using Spring Source and hosting it on Atmos to create a cloud environment?

Is the programming for an Android app in Spring Source same as that for Eclipse?

Reading between the lines, it seems like you're trying to provide an interface into Atmos from a mobile device.  If that's the case, you might want to look at the JavaScript library that was just released yesterday.  It's been tested in Safari on iOS 4 and 5 and I don't see any reason why it wouldn't work on Android.

Atmos JavaScript binding

You could also write an android app using our Java binding.  That would connect directly to Atmos without the need for an additional application server.

To address your questions, I'm not sure what you mean by "hosting it on Atmos to create a cloud environment."  If your app uses REST to connect to Atmos, you don't need to host anything (unless you're talking about the actual .apk file).

Spring Source is basically a set of plug-ins for Eclipse, so the environment is the same; you just have more productivity tools tailored for Spring development.

Forgive me if I misunderstood you.