This struggle is best summarised as an inverse problem, in which one begins with a set of observations (e.g., EEG signals) and has to work backwards to try to calculate what caused them (e.g., neural activity in a specific brain region).
Application Loader is a tool provided by Apple which allows you to upload new binaries and deliver new in-app purchases to iTunes Connect. You can download and install Application loader from iTunes Connect. Installing Application Loader . Log in to iTunes Connect. Click on Resources and Help. Scroll to App Preparation and Delivery. Click the Download Application Loader link to download the self-extracting installation package (ApplicationLoader_X.X.dmg).
The major difference between the two (applet and application) is that java applications are designed to work under the homogenous and more secure areas. On contrary to that, java applets are designed to run the heterogeneous and probably unsecured environment. Internet has imposed several restrictions on it.