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Java is a general-purpose, concurrent, class-based, object-oriented computer programming language that is specifically designed to have as few implementation dependencies as possible. It is intended to let application developers "write once, run anywhere" (WORA), meaning that code that runs on one platform does not need to be recompiled to run on another.
Commercial software, or less commonly, payware, is computer software that is produced for sale or that serves commercial purposes, a customer of the proprietary software pays a fee for a license to use the software.