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List of Java APIs
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<p>There are two types of <a href="/facts/Java_/9ScgFyAL">Java programming language</a> <a href="/facts/Application_programming_interface/GMlN4vUr">application programming interfaces (APIs)</a>: </p> <ul><li>The official core Java API, contained in the Android (Google), SE (OpenJDK and Oracle), <a href="/facts/MicroEJ/9agHoHL6">MicroEJ</a>. These packages (java.* 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.</li> <li>Optional APIs that can be downloaded separately. The specification of these APIs are defined according to many different organizations in the world (Alljoyn, OSGi, Eclipse, JCP, E-S-R, etc.).</li></ul> <p>The following is a partial list of application programming interfaces (APIs) for Java. </p>