Just Java™ 2

What Generic Code Looks Like

There are three parts to generics:

1. Declare the class which will have generic type parameters

2. Declare/instantiate an object of that class, passing the actual type arguments to it.

3. Invoke methods on the object of the instantiated generic class.

Using the instantiated generic class is no different to using a non-generic class, so we won't spend a lot of time looking at that. The class declaration has to come before any instantiations, so let's look at declarations first.

A use of generics outside the Collection classes

The class java.lang.Class has been updated to take a generic parameter. Recall that the run-time system creates a separate Class object for each class in your program, when it loads the class. ...