The Good, Bad, and Ugly of Java Generics

The Generics feature of the Java language was intended to bring overall type safety to Java. This session starts at the basics of Generics and looks at its capabilities. It presents some of the under-the-hood details of Generics implementation and then delves into some of the changes to Java libraries for accommodating Generics. Finally, it takes a look at some restrictions and pitfalls we need to be familiar with when it comes to relying on Generics.

Copyright © 2013 Oracle and/or its affiliates. Oracle® is a registered trademark of Oracle and/or its affiliates. All rights reserved. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the "Materials"). The Materials are provided "as is" without any warranty of any kind, either express or implied, including without limitation warranties of merchantability, fitness for a particular purpose, and non-infringement.

[deletevil]

This video is a blessing, specially for the <? super T> that I didn't know about until now.
So, if I am aware of the bad side of the Java as described in this lecture and I carefully follow that, I am good to go with the Generics heavily as much as possible in my application, right?

[jvsnyc]

At the end you accidentally say "convert from generic to non-generic" twice instead of the other way around. Of course, I am more interested in finding out whether Reification ever happened in Java 9, 10, 11, 12 or 13, but I wanted to review the basics first.

[premalshah]

Gr8 tutorial. What toold/ide/interpreter are you using?

[carlhopkinson]

Generics seems to cause a lot more problems than it cures.

[SrikanthReddymalyala]

Great Tutorial. But not for beginners.

[liqunsun]

Gr8 tutorial. What toold/ide/interpreter are you using?