Generics will be bundled with the Java SDK 1.5 (Tiger) release, which is currently scheduled for this summer (2004). However, our advice is to download the 1.5 Beta 1 release implementation of JSR-014 and begin working with the language to get a better grasp on genericity. The Beta release can be found at http://www.java.sun.com/.
JSR-000014 Adding Generics to the Java™ Programming Language, 2004
Prototype for JSR014: Adding Generics to the Java™ Programming Language v. 2.2, 2004
Download Java 2 Platform, Standard Edition 1.5.0 Beta 1, 2004