Java - Classes with type?

puclic class ClassA<T> {
}

what is the following technique called where you can pass a class type to another class and use 开发者_如何学编程it withing the class for type safety? I am talking about the <T> after my class name

Java generics.

It is the way of typecasting your class so that referential integrity is checked at compile time instead of runtime.

The complete tutorials are at

http://download.oracle.com/javase/tutorial/extra/generics/index.html

http://java.sun.com/j2se/1.5/pdf/generics-tutorial.pdf

It's called generics. Is that the whole question?