ASA Programming Guide
Introduction to Java in the Database
Java in the database Q & A
The Java Application Programmer's Interface (API) is a set of classes created by Sun Microsystems. It provides a range of base functionality that can be used and extended by Java developers. It is at the core of what you can do with Java.
The Java API offers a tremendous amount of functionality in its own right. A large portion of the Java API is available to any database able to use Java code. This exposes the majority of non-visual classes from the Java API that should be familiar to developers currently using the Sun Microsystems Java Development Kit (JDK).