Which programming languages should I learn if I want to make a hybrid app?

I'm new to mobile programming.i've had some experience programming in Java but never for mobile phones.

I'm in a team about to develop an advanced app for iphone (ios), Galaxy (android) and blackberry or Nokia (windows). The app is a business app to allow customers to purchase from this business. So what languages should we learn?

Also, what developing software is best for this? Would you encourage something like netbeans/Dreamweaver/eclipse or web based?

I'm new to this and we're under time pressure please help.

You are going to develop an "advance app" and this is the question you are asking? You need the sdk for each platform.

Java and j query

Java is a full object-oriented language, strongly typed, with an extensive feature set focused on networking and cross-platform compatibility. Applications written in Java can run on virtually any OS - though the performance won't be as good as something designed to run natively.

It is the language of choice for most Computer Science courses, and consequently almost everyone has at least a little Java programming experience. Android applications are written in Java too, though you can't simply run a regular Java app on your Android mobile nor vice-versa.

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