There are three types of Java Programming Language Application Programming Interfaces (APIs) :
* the official core Java API, contained in the JDK or JRE, of one of the editions of the Java Platform. The three editions of the Java Platform are Java ME (Mobile edition), Java SE (Standard edition), and Java EE (Enterprise edition).
* optional official APIs that can be downloaded separately. The specification of these APIs are defined according to a Java Specification Request (JSR), and sometimes some of these APIs are later included in the core APIs of the platform (the most notable example of this kind is Swing).
* unofficial APIs, developed by third parties, but not related to any JSRs.
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Warehouse Shelving
Pallet Racking
* the official core Java API, contained in the JDK or JRE, of one of the editions of the Java Platform. The three editions of the Java Platform are Java ME (Mobile edition), Java SE (Standard edition), and Java EE (Enterprise edition).
* optional official APIs that can be downloaded separately. The specification of these APIs are defined according to a Java Specification Request (JSR), and sometimes some of these APIs are later included in the core APIs of the platform (the most notable example of this kind is Swing).
* unofficial APIs, developed by third parties, but not related to any JSRs.
______________________
Warehouse Shelving
Pallet Racking
