No.
Go into the App Store and search 'Twitter'. Tap download and then you have it installed.
Java cannot be installed onto an iPad
no you cannot make a call on ipad as it has no microphone installed
All iDevices now come with iCloud that was installed in the last update of apples operating system, so yes the iPad and iPad 2 will have iCloud installed.
Mainly from the App Store pre-installed on your iPad!
Google what? You can download plenty of Google apps. Google search engine is the default for Safari and Google maps is pre installed
The server on a Ipad is the search engine for the device.
No. Updating the iPad's firmware will remove any jailbreak that has been installed.
You sell it and buy an iPad3. All of your apps can the re-installed on the new iPad.
To start GIMP on your Mac, first ensure that you have it installed. You can download it from the official GIMP website if you haven't already. Once installed, locate GIMP in your Applications folder or use Spotlight search (Cmd + Space) to find it. Click on the GIMP icon to launch the application.
The ipad does indeed come with a pre installed pdf viewer, however, it is not nearly the quality that it needs to be so an expansion pack or upgrade is needed.
I think that by Microsoft (the company's name) you mean Windows (the operating system made by Microsoft). The iPad does not come with a version of Windows installed on it, and Windows is not made to be installed an an iPad. All iPads have a version of Apple's iOS installed on it. iPhones and iPod touches also use iOS. The current iOS version is 4.3.5