List of Java APIs

There are two types of Java programming language application programming interfaces (APIs):The official core Java API, contained in the Android (Google), SE, MicroEJ. These packages are the core Java language packages, meaning that programmers using the Java language had to use them in order to make any worthwhile use of the Java language. Optional APIs that can be downloaded separately. The specification of these APIs are defined according to many different organizations in the world.

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