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

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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

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